CVE-2026-50261

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-50261", "assignerOrgId": "53f830b8-0a3f-465b-8143-3b8a9948e749", "state": "PUBLISHED", "assignerShortName": "redhat", "dateReserved": "2026-06-04T14:55:24.012Z", "datePublished": "2026-06-05T10:36:33.418Z", "dateUpdated": "2026-11-04T22:43:21.641Z"}, "containers": {"cna": {"title": "Xorg-x11-server: xorg-x11-server-xwayland: xorg-x11-server: use-after-free in syncchangecounter()", "metrics": [{"other": {"content": {"value": "Important", "namespace": "https://access.redhat.com/security/updates/classification/"}, "type": "Red Hat severity rating"}}, {"cvssV3_1": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 7.8, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "version": "3.1"}, "format": "CVSS"}], "descriptions": [{"lang": "en", "value": "A use-after-free flaw was found in the X.Org X server and Xwayland in SyncChangeCounter(). A client that sets up multiple SyncCounters can trigger a use-after-free when destroying those counters via a second client connection while changing those counters. This may be used to crash the server, or for privilege escalation if the X server runs as root."}], "affected": [{"vendor": "Red Hat", "product": "Red Hat Enterprise Linux 10", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "packageName": "xorg-x11-server-Xwayland", "defaultStatus": "affected", "versions": [{"version": "0:24.1.9-4.el10_2.2", "lessThan": "*", "versionType": "rpm", "status": "unaffected"}], "cpes": ["cpe:/o:redhat:enterprise_linux:10.2"]}, {"vendor": "Red Hat", "product": "Red Hat Enterprise Linux 10.0 Extended Update Support", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "packageName": "xorg-x11-server-Xwayland", "defaultStatus": "affected", "versions": [{"version": "0:24.1.5-6.el10_0.1", "lessThan": "*", "versionType": "rpm", "status": "unaffected"}], "cpes": ["cpe:/o:redhat:enterprise_linux_eus:10.0"]}, {"vendor": "Red Hat", "product": "Red Hat Enterprise Linux 6 Extended Lifecycle Support - EXTENSION", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "packageName": "tigervnc", "defaultStatus": "affected", "versions": [{"version": "0:1.1.0-25.el6_10.18", "lessThan": "*", "versionType": "rpm", "status": "unaffected"}], "cpes": ["cpe:/o:redhat:rhel_els:6"]}, {"vendor": "Red Hat", "product": "Red Hat Enterprise Linux 7 Extended Lifecycle Support", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "packageName": "xorg-x11-server", "defaultStatus": "affected", "versions": [{"version": "0:1.20.4-35.el7_9", "lessThan": "*", "versionType": "rpm", "status": "unaffected"}], "cpes": ["cpe:/o:redhat:rhel_els:7"]}, {"vendor": "Red Hat", "product": "Red Hat Enterprise Linux 7 Extended Lifecycle Support", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "packageName": "tigervnc", "defaultStatus": "affected", "versions": [{"version": "0:1.8.0-36.el7_9.5", "lessThan": "*", "versionType": "rpm", "status": "unaffected"}], "cpes": ["cpe:/o:redhat:rhel_els:7"]}, {"vendor": "Red Hat", "product": "Red Hat Enterprise Linux 8", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "packageName": "xorg-x11-server-Xwayland", "defaultStatus": "affected", "versions": [{"version": "0:21.1.3-20.el8_10.2", "lessThan": "*", "versionType": "rpm", "status": "unaffected"}], "cpes": ["cpe:/a:redhat:enterprise_linux:8::appstream"]}, {"vendor": "Red Hat", "product": "Red Hat Enterprise Linux 8", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "packageName": "xorg-x11-server", "defaultStatus": "affected", "versions": [{"version": "0:1.20.11-28.el8_10.2", "lessThan": "*", "versionType": "rpm", "status": "unaffected"}], "cpes": ["cpe:/a:redhat:enterprise_linux:8::appstream", "cpe:/a:redhat:enterprise_linux:8::crb"]}, {"vendor": "Red Hat", "product": "Red Hat Enterprise Linux 8", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "packageName": "tigervnc", "defaultStatus": "affected", "versions": [{"version": "0:1.15.0-10.el8_10", "lessThan": "*", "versionType": "rpm", "status": "unaffected"}], "cpes": ["cpe:/a:redhat:enterprise_linux:8::appstream"]}, {"vendor": "Red Hat", "product": "Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "packageName": "xorg-x11-server", "defaultStatus": "affected", "versions": [{"version": "0:1.20.10-5.el8_4", "lessThan": "*", "versionType": "rpm", "status": "unaffected"}], "cpes": ["cpe:/a:redhat:rhel_aus:8.4::appstream", "cpe:/a:redhat:rhel_eus_long_life:8.4::appstream"]}, {"vendor": "Red Hat", "product": "Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "packageName": "tigervnc", "defaultStatus": "affected", "versions": [{"version": "0:1.11.0-8.el8_4.16", "lessThan": "*", "versionType": "rpm", "status": "unaffected"}], "cpes": ["cpe:/a:redhat:rhel_aus:8.4::appstream", "cpe:/a:redhat:rhel_eus_long_life:8.4::appstream"]}, {"vendor": "Red Hat", "product": "Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "packageName": "xorg-x11-server", "defaultStatus": "affected", "versions": [{"version": "0:1.20.10-5.el8_4", "lessThan": "*", "versionType": "rpm", "status": "unaffected"}], "cpes": ["cpe:/a:redhat:rhel_aus:8.4::appstream", "cpe:/a:redhat:rhel_eus_long_life:8.4::appstream"]}, {"vendor": "Red Hat", "product": "Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "packageName": "tigervnc", "defaultStatus": "affected", "versions": [{"version": "0:1.11.0-8.el8_4.16", "lessThan": "*", "versionType": "rpm", "status": "unaffected"}], "cpes": ["cpe:/a:redhat:rhel_aus:8.4::appstream", "cpe:/a:redhat:rhel_eus_long_life:8.4::appstream"]}, {"vendor": "Red Hat", "product": "Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "packageName": "xorg-x11-server", "defaultStatus": "affected", "versions": [{"version": "0:1.20.11-8.el8_6", "lessThan": "*", "versionType": "rpm", "status": "unaffected"}], "cpes": ["cpe:/a:redhat:rhel_aus:8.6::appstream", "cpe:/a:redhat:rhel_eus_long_life:8.6::appstream"]}, {"vendor": "Red Hat", "product": "Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "packageName": "xorg-x11-server-Xwayland", "defaultStatus": "affected", "versions": [{"version": "0:21.1.3-2.el8_6.7", "lessThan": "*", "versionType": "rpm", "status": "unaffected"}], "cpes": ["cpe:/a:redhat:rhel_aus:8.6::appstream", "cpe:/a:redhat:rhel_eus_long_life:8.6::appstream"]}, {"vendor": "Red Hat", "product": "Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "packageName": "tigervnc", "defaultStatus": "affected", "versions": [{"version": "0:1.12.0-6.el8_6.18", "lessThan": "*", "versionType": "rpm", "status": "unaffected"}], "cpes": ["cpe:/a:redhat:rhel_aus:8.6::appstream", "cpe:/a:redhat:rhel_eus_long_life:8.6::appstream"]}, {"vendor": "Red Hat", "product": "Red Hat Enterprise Linux 8.6 Extended Update Support Long-Life Add-On", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "packageName": "xorg-x11-server", "defaultStatus": "affected", "versions": [{"version": "0:1.20.11-8.el8_6", "lessThan": "*", "versionType": "rpm", "status": "unaffected"}], "cpes": ["cpe:/a:redhat:rhel_aus:8.6::appstream", "cpe:/a:redhat:rhel_eus_long_life:8.6::appstream"]}, {"vendor": "Red Hat", "product": "Red Hat Enterprise Linux 8.6 Extended Update Support Long-Life Add-On", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "packageName": "xorg-x11-server-Xwayland", "defaultStatus": "affected", "versions": [{"version": "0:21.1.3-2.el8_6.7", "lessThan": "*", "versionType": "rpm", "status": "unaffected"}], "cpes": ["cpe:/a:redhat:rhel_aus:8.6::appstream", "cpe:/a:redhat:rhel_eus_long_life:8.6::appstream"]}, {"vendor": "Red Hat", "product": "Red Hat Enterprise Linux 8.6 Extended Update Support Long-Life Add-On", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "packageName": "tigervnc", "defaultStatus": "affected", "versions": [{"version": "0:1.12.0-6.el8_6.18", "lessThan": "*", "versionType": "rpm", "status": "unaffected"}], "cpes": ["cpe:/a:redhat:rhel_aus:8.6::appstream", "cpe:/a:redhat:rhel_eus_long_life:8.6::appstream"]}, {"vendor": "Red Hat", "product": "Red Hat Enterprise Linux 8.8 Telecommunications Update Service", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "packageName": "xorg-x11-server", "defaultStatus": "affected", "versions": [{"version": "0:1.20.11-19.el8_8", "lessThan": "*", "versionType": "rpm", "status": "unaffected"}], "cpes": ["cpe:/a:redhat:rhel_e4s:8.8::appstream", "cpe:/a:redhat:rhel_tus:8.8::appstream"]}, {"vendor": "Red Hat", "product": "Red Hat Enterprise Linux 8.8 Telecommunications Update Service", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "packageName": "xorg-x11-server-Xwayland", "defaultStatus": "affected", "versions": [{"version": "0:21.1.3-13.el8_8.1", "lessThan": "*", "versionType": "rpm", "status": "unaffected"}], "cpes": ["cpe:/a:redhat:rhel_e4s:8.8::appstream", "cpe:/a:redhat:rhel_tus:8.8::appstream"]}, {"vendor": "Red Hat", "product": "Red Hat Enterprise Linux 8.8 Telecommunications Update Service", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "packageName": "tigervnc", "defaultStatus": "affected", "versions": [{"version": "0:1.12.0-15.el8_8.18", "lessThan": "*", "versionType": "rpm", "status": "unaffected"}], "cpes": ["cpe:/a:redhat:rhel_e4s:8.8::appstream", "cpe:/a:redhat:rhel_tus:8.8::appstream"]}, {"vendor": "Red Hat", "product": "Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "packageName": "xorg-x11-server", "defaultStatus": "affected", "versions": [{"version": "0:1.20.11-19.el8_8", "lessThan": "*", "versionType": "rpm", "status": "unaffected"}], "cpes": ["cpe:/a:redhat:rhel_e4s:8.8::appstream", "cpe:/a:redhat:rhel_tus:8.8::appstream"]}, {"vendor": "Red Hat", "product": "Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "packageName": "xorg-x11-server-Xwayland", "defaultStatus": "affected", "versions": [{"version": "0:21.1.3-13.el8_8.1", "lessThan": "*", "versionType": "rpm", "status": "unaffected"}], "cpes": ["cpe:/a:redhat:rhel_e4s:8.8::appstream", "cpe:/a:redhat:rhel_tus:8.8::appstream"]}, {"vendor": "Red Hat", "product": "Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "packageName": "tigervnc", "defaultStatus": "affected", "versions": [{"version": "0:1.12.0-15.el8_8.18", "lessThan": "*", "versionType": "rpm", "status": "unaffected"}], "cpes": ["cpe:/a:redhat:rhel_e4s:8.8::appstream", "cpe:/a:redhat:rhel_tus:8.8::appstream"]}, {"vendor": "Red Hat", "product": "Red Hat Enterprise Linux 9", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "packageName": "xorg-x11-server-Xwayland", "defaultStatus": "affected", "versions": [{"version": "0:24.1.9-4.el9_8.2", "lessThan": "*", "versionType": "rpm", "status": "unaffected"}], "cpes": ["cpe:/a:redhat:enterprise_linux:9::appstream", "cpe:/a:redhat:enterprise_linux:9::crb"]}, {"vendor": "Red Hat", "product": "Red Hat Enterprise Linux 9", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "packageName": "xorg-x11-server", "defaultStatus": "affected", "versions": [{"version": "0:1.20.11-34.el9_8.2", "lessThan": "*", "versionType": "rpm", "status": "unaffected"}], "cpes": ["cpe:/a:redhat:enterprise_linux:9::appstream", "cpe:/a:redhat:enterprise_linux:9::crb"]}, {"vendor": "Red Hat", "product": "Red Hat Enterprise Linux 9", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "packageName": "tigervnc", "defaultStatus": "affected", "versions": [{"version": "0:1.15.0-7.el9_8.2", "lessThan": "*", "versionType": "rpm", "status": "unaffected"}], "cpes": ["cpe:/a:redhat:enterprise_linux:9::appstream"]}, {"vendor": "Red Hat", "product": "Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "packageName": "xorg-x11-server", "defaultStatus": "affected", "versions": [{"version": "0:1.20.11-21.el9_2", "lessThan": "*", "versionType": "rpm", "status": "unaffected"}], "cpes": ["cpe:/a:redhat:rhel_e4s:9.2::appstream"]}, {"vendor": "Red Hat", "product": "Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "packageName": "xorg-x11-server-Xwayland", "defaultStatus": "affected", "versions": [{"version": "0:21.1.3-10.el9_2.1", "lessThan": "*", "versionType": "rpm", "status": "unaffected"}], "cpes": ["cpe:/a:redhat:rhel_e4s:9.2::appstream"]}, {"vendor": "Red Hat", "product": "Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "packageName": "tigervnc", "defaultStatus": "affected", "versions": [{"version": "0:1.12.0-14.el9_2.15", "lessThan": "*", "versionType": "rpm", "status": "unaffected"}], "cpes": ["cpe:/a:redhat:rhel_e4s:9.2::appstream"]}, {"vendor": "Red Hat", "product": "Red Hat Enterprise Linux 9.4 Update Services for SAP Solutions", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "packageName": "xorg-x11-server", "defaultStatus": "affected", "versions": [{"version": "0:1.20.11-29.el9_4", "lessThan": "*", "versionType": "rpm", "status": "unaffected"}], "cpes": ["cpe:/a:redhat:rhel_e4s:9.4::appstream"]}, {"vendor": "Red Hat", "product": "Red Hat Enterprise Linux 9.4 Update Services for SAP Solutions", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "packageName": "xorg-x11-server-Xwayland", "defaultStatus": "affected", "versions": [{"version": "0:22.1.9-8.el9_4.1", "lessThan": "*", "versionType": "rpm", "status": "unaffected"}], "cpes": ["cpe:/a:redhat:rhel_e4s:9.4::appstream"]}, {"vendor": "Red Hat", "product": "Red Hat Enterprise Linux 9.4 Update Services for SAP Solutions", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "packageName": "tigervnc", "defaultStatus": "affected", "versions": [{"version": "0:1.13.1-8.el9_4.10", "lessThan": "*", "versionType": "rpm", "status": "unaffected"}], "cpes": ["cpe:/a:redhat:rhel_e4s:9.4::appstream"]}, {"vendor": "Red Hat", "product": "Red Hat Enterprise Linux 9.6 Extended Update Support", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "packageName": "xorg-x11-server", "defaultStatus": "affected", "versions": [{"version": "0:1.20.11-34.el9_6", "lessThan": "*", "versionType": "rpm", "status": "unaffected"}], "cpes": ["cpe:/a:redhat:rhel_eus:9.6::appstream", "cpe:/a:redhat:rhel_eus:9.6::crb"]}, {"vendor": "Red Hat", "product": "Red Hat Enterprise Linux 9.6 Extended Update Support", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "packageName": "xorg-x11-server-Xwayland", "defaultStatus": "affected", "versions": [{"version": "0:23.2.7-6.el9_6.1", "lessThan": "*", "versionType": "rpm", "status": "unaffected"}], "cpes": ["cpe:/a:redhat:rhel_eus:9.6::appstream", "cpe:/a:redhat:rhel_eus:9.6::crb"]}, {"vendor": "Red Hat", "product": "Red Hat Enterprise Linux 9.6 Extended Update Support", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "packageName": "tigervnc", "defaultStatus": "affected", "versions": [{"version": "0:1.14.1-11.el9_6", "lessThan": "*", "versionType": "rpm", "status": "unaffected"}], "cpes": ["cpe:/a:redhat:rhel_eus:9.6::appstream"]}, {"vendor": "Red Hat", "product": "Red Hat Enterprise Linux 6", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "packageName": "xorg-x11-server", "defaultStatus": "unknown", "cpes": ["cpe:/o:redhat:rhel_els:6"]}], "references": [{"url": "https://access.redhat.com/errata/RHSA-2026:26562", "name": "RHSA-2026:26562", "tags": ["vendor-advisory", "x_refsource_REDHAT"]}, {"url": "https://access.redhat.com/errata/RHSA-2026:26566", "name": "RHSA-2026:26566", "tags": ["vendor-advisory", "x_refsource_REDHAT"]}, {"url": "https://access.redhat.com/errata/RHSA-2026:26590", "name": "RHSA-2026:26590", "tags": ["vendor-advisory", "x_refsource_REDHAT"]}, {"url": "https://access.redhat.com/errata/RHSA-2026:26610", "name": "RHSA-2026:26610", "tags": ["vendor-advisory", "x_refsource_REDHAT"]}, {"url": "https://access.redhat.com/errata/RHSA-2026:26709", "name": "RHSA-2026:26709", "tags": ["vendor-advisory", "x_refsource_REDHAT"]}, {"url": "https://access.redhat.com/errata/RHSA-2026:28923", "name": "RHSA-2026:28923", "tags": ["vendor-advisory", "x_refsource_REDHAT"]}, {"url": "https://access.redhat.com/errata/RHSA-2026:29844", "name": "RHSA-2026:29844", "tags": ["vendor-advisory", "x_refsource_REDHAT"]}, {"url": "https://access.redhat.com/errata/RHSA-2026:36083", "name": "RHSA-2026:36083", "tags": ["vendor-advisory", "x_refsource_REDHAT"]}, {"url": "https://access.redhat.com/errata/RHSA-2026:36085", "name": "RHSA-2026:36085", "tags": ["vendor-advisory", "x_refsource_REDHAT"]}, {"url": "https://access.redhat.com/errata/RHSA-2026:36086", "name": "RHSA-2026:36086", "tags": ["vendor-advisory", "x_refsource_REDHAT"]}, {"url": "https://access.redhat.com/errata/RHSA-2026:36087", "name": "RHSA-2026:36087", "tags": ["vendor-advisory", "x_refsource_REDHAT"]}, {"url": "https://access.redhat.com/errata/RHSA-2026:36632", "name": "RHSA-2026:36632", "tags": ["vendor-advisory", "x_refsource_REDHAT"]}, {"url": "https://access.redhat.com/errata/RHSA-2026:36633", "name": "RHSA-2026:36633", "tags": ["vendor-advisory", "x_refsource_REDHAT"]}, {"url": "https://access.redhat.com/errata/RHSA-2026:36634", "name": "RHSA-2026:36634", "tags": ["vendor-advisory", "x_refsource_REDHAT"]}, {"url": "https://access.redhat.com/errata/RHSA-2026:36768", "name": "RHSA-2026:36768", "tags": ["vendor-advisory", "x_refsource_REDHAT"]}, {"url": "https://access.redhat.com/errata/RHSA-2026:36791", "name": "RHSA-2026:36791", "tags": ["vendor-advisory", "x_refsource_REDHAT"]}, {"url": "https://access.redhat.com/errata/RHSA-2026:36792", "name": "RHSA-2026:36792", "tags": ["vendor-advisory", "x_refsource_REDHAT"]}, {"url": "https://access.redhat.com/errata/RHSA-2026:36798", "name": "RHSA-2026:36798", "tags": ["vendor-advisory", "x_refsource_REDHAT"]}, {"url": "https://access.redhat.com/errata/RHSA-2026:38502", "name": "RHSA-2026:38502", "tags": ["vendor-advisory", "x_refsource_REDHAT"]}, {"url": "https://access.redhat.com/errata/RHSA-2026:38810", "name": "RHSA-2026:38810", "tags": ["vendor-advisory", "x_refsource_REDHAT"]}, {"url": "https://access.redhat.com/errata/RHSA-2026:46377", "name": "RHSA-2026:46377", "tags": ["vendor-advisory", "x_refsource_REDHAT"]}, {"url": "https://access.redhat.com/errata/RHSA-2026:46382", "name": "RHSA-2026:46382", "tags": ["vendor-advisory", "x_refsource_REDHAT"]}, {"url": "https://access.redhat.com/errata/RHSA-2026:46385", "name": "RHSA-2026:46385", "tags": ["vendor-advisory", "x_refsource_REDHAT"]}, {"url": "https://access.redhat.com/errata/RHSA-2026:46392", "name": "RHSA-2026:46392", "tags": ["vendor-advisory", "x_refsource_REDHAT"]}, {"url": "https://access.redhat.com/errata/RHSA-2026:46456", "name": "RHSA-2026:46456", "tags": ["vendor-advisory", "x_refsource_REDHAT"]}, {"url": "https://access.redhat.com/errata/RHSA-2026:46460", "name": "RHSA-2026:46460", "tags": ["vendor-advisory", "x_refsource_REDHAT"]}, {"url": "https://access.redhat.com/errata/RHSA-2026:46473", "name": "RHSA-2026:46473", "tags": ["vendor-advisory", "x_refsource_REDHAT"]}, {"url": "https://access.redhat.com/errata/RHSA-2026:49519", "name": "RHSA-2026:49519", "tags": ["vendor-advisory", "x_refsource_REDHAT"]}, {"url": "https://access.redhat.com/security/cve/CVE-2026-50261", "tags": ["vdb-entry", "x_refsource_REDHAT"]}, {"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2485386", "name": "RHBZ#2485386", "tags": ["issue-tracking", "x_refsource_REDHAT"]}, {"url": "https://gitlab.freedesktop.org/xorg/xserver/-/commit/bdd7bf57af208b1ddf57d4683d67104443b44812"}, {"url": "https://lists.x.org/archives/xorg-announce/2026-June/003702.html"}, {"url": "https://redhat.atlassian.net/browse/PSIRTSUPT-16950"}], "datePublic": "2026-06-02T00:00:00.000Z", "problemTypes": [{"descriptions": [{"cweId": "CWE-416", "description": "Use After Free", "lang": "en", "type": "CWE"}]}], "x_redhatCweChain": "CWE-416: Use After Free", "workarounds": [{"lang": "en", "value": "Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability."}], "timeline": [{"lang": "en", "time": "2026-05-15T03:14:46.000Z", "value": "Reported to Red Hat."}, {"lang": "en", "time": "2026-06-02T00:00:00.000Z", "value": "Made public."}], "credits": [{"lang": "en", "value": "Upstream acknowledges Anonymous (Trend Micro Zero Day Initiative) as the original reporter."}], "providerMetadata": {"orgId": "53f830b8-0a3f-465b-8143-3b8a9948e749", "shortName": "redhat", "dateUpdated": "2026-11-04T22:43:21.641Z"}, "x_generator": {"engine": "cvelib 1.8.0"}}, "adp": [{"metrics": [{"other": {"type": "ssvc", "content": {"timestamp": "2026-06-05T00:00:00+00:00", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "total"}], "role": "CISA Coordinator", "version": "2.0.3", "id": "CVE-2026-50261"}}}], "title": "CISA ADP Vulnrichment", "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-06-06T03:56:14.286Z"}}, {"affected": [{"collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "cpes": ["cpe:/o:redhat:enterprise_linux:10.2"], "defaultStatus": "affected", "packageName": "xorg-x11-server-Xwayland", "product": "Red Hat Enterprise Linux 10", "vendor": "Red Hat", "versions": [{"lessThan": "*", "status": "unaffected", "version": "0:24.1.9-4.el10_2.2", "versionType": "rpm"}]}, {"collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "cpes": ["cpe:/o:redhat:enterprise_linux_eus:10.0"], "defaultStatus": "affected", "packageName": "xorg-x11-server-Xwayland", "product": "Red Hat Enterprise Linux 10.0 Extended Update Support", "vendor": "Red Hat", "versions": [{"lessThan": "*", "status": "unaffected", "version": "0:24.1.5-6.el10_0.1", "versionType": "rpm"}]}, {"collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "cpes": ["cpe:/o:redhat:rhel_els:6"], "defaultStatus": "affected", "packageName": "tigervnc", "product": "Red Hat Enterprise Linux 6 Extended Lifecycle Support - EXTENSION", "vendor": "Red Hat", "versions": [{"lessThan": "*", "status": "unaffected", "version": "0:1.1.0-25.el6_10.18", "versionType": "rpm"}]}, {"collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "cpes": ["cpe:/o:redhat:rhel_els:7"], "defaultStatus": "affected", "packageName": "xorg-x11-server", "product": "Red Hat Enterprise Linux 7 Extended Lifecycle Support", "vendor": "Red Hat", "versions": [{"lessThan": "*", "status": "unaffected", "version": "0:1.20.4-35.el7_9", "versionType": "rpm"}]}, {"collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "cpes": ["cpe:/o:redhat:rhel_els:7"], "defaultStatus": "affected", "packageName": "tigervnc", "product": "Red Hat Enterprise Linux 7 Extended Lifecycle Support", "vendor": "Red Hat", "versions": [{"lessThan": "*", "status": "unaffected", "version": "0:1.8.0-36.el7_9.5", "versionType": "rpm"}]}, {"collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "cpes": ["cpe:/a:redhat:enterprise_linux:8"], "defaultStatus": "affected", "packageName": "xorg-x11-server-Xwayland", "product": "Red Hat Enterprise Linux 8", "vendor": "Red Hat", "versions": [{"lessThan": "*", "status": "unaffected", "version": "0:21.1.3-20.el8_10.2", "versionType": "rpm"}]}, {"collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "cpes": ["cpe:/a:redhat:enterprise_linux:8"], "defaultStatus": "affected", "packageName": "xorg-x11-server", "product": "Red Hat Enterprise Linux 8", "vendor": "Red Hat", "versions": [{"lessThan": "*", "status": "unaffected", "version": "0:1.20.11-28.el8_10.2", "versionType": "rpm"}]}, {"collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "cpes": ["cpe:/a:redhat:enterprise_linux:8"], "defaultStatus": "affected", "packageName": "tigervnc", "product": "Red Hat Enterprise Linux 8", "vendor": "Red Hat", "versions": [{"lessThan": "*", "status": "unaffected", "version": "0:1.15.0-10.el8_10", "versionType": "rpm"}]}, {"collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "cpes": ["cpe:/a:redhat:rhel_aus:8.4"], "defaultStatus": "affected", "packageName": "xorg-x11-server", "product": "Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support", "vendor": "Red Hat", "versions": [{"lessThan": "*", "status": "unaffected", "version": "0:1.20.10-5.el8_4", "versionType": "rpm"}]}, {"collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "cpes": ["cpe:/a:redhat:rhel_aus:8.4"], "defaultStatus": "affected", "packageName": "tigervnc", "product": "Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support", "vendor": "Red Hat", "versions": [{"lessThan": "*", "status": "unaffected", "version": "0:1.11.0-8.el8_4.16", "versionType": "rpm"}]}, {"collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "cpes": ["cpe:/a:redhat:rhel_eus_long_life:8.4"], "defaultStatus": "affected", "packageName": "xorg-x11-server", "product": "Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On", "vendor": "Red Hat", "versions": [{"lessThan": "*", "status": "unaffected", "version": "0:1.20.10-5.el8_4", "versionType": "rpm"}]}, {"collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "cpes": ["cpe:/a:redhat:rhel_eus_long_life:8.4"], "defaultStatus": "affected", "packageName": "tigervnc", "product": "Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On", "vendor": "Red Hat", "versions": [{"lessThan": "*", "status": "unaffected", "version": "0:1.11.0-8.el8_4.16", "versionType": "rpm"}]}, {"collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "cpes": ["cpe:/a:redhat:rhel_aus:8.6"], "defaultStatus": "affected", "packageName": "xorg-x11-server", "product": "Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support", "vendor": "Red Hat", "versions": [{"lessThan": "*", "status": "unaffected", "version": "0:1.20.11-8.el8_6", "versionType": "rpm"}]}, {"collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "cpes": ["cpe:/a:redhat:rhel_aus:8.6"], "defaultStatus": "affected", "packageName": "xorg-x11-server-Xwayland", "product": "Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support", "vendor": "Red Hat", "versions": [{"lessThan": "*", "status": "unaffected", "version": "0:21.1.3-2.el8_6.7", "versionType": "rpm"}]}, {"collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "cpes": ["cpe:/a:redhat:rhel_aus:8.6"], "defaultStatus": "affected", "packageName": "tigervnc", "product": "Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support", "vendor": "Red Hat", "versions": [{"lessThan": "*", "status": "unaffected", "version": "0:1.12.0-6.el8_6.18", "versionType": "rpm"}]}, {"collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "cpes": ["cpe:/a:redhat:rhel_eus_long_life:8.6"], "defaultStatus": "affected", "packageName": "xorg-x11-server", "product": "Red Hat Enterprise Linux 8.6 Extended Update Support Long-Life Add-On", "vendor": "Red Hat", "versions": [{"lessThan": "*", "status": "unaffected", "version": "0:1.20.11-8.el8_6", "versionType": "rpm"}]}, {"collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "cpes": ["cpe:/a:redhat:rhel_eus_long_life:8.6"], "defaultStatus": "affected", "packageName": "xorg-x11-server-Xwayland", "product": "Red Hat Enterprise Linux 8.6 Extended Update Support Long-Life Add-On", "vendor": "Red Hat", "versions": [{"lessThan": "*", "status": "unaffected", "version": "0:21.1.3-2.el8_6.7", "versionType": "rpm"}]}, {"collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "cpes": ["cpe:/a:redhat:rhel_eus_long_life:8.6"], "defaultStatus": "affected", "packageName": "tigervnc", "product": "Red Hat Enterprise Linux 8.6 Extended Update Support Long-Life Add-On", "vendor": "Red Hat", "versions": [{"lessThan": "*", "status": "unaffected", "version": "0:1.12.0-6.el8_6.18", "versionType": "rpm"}]}, {"collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "cpes": ["cpe:/a:redhat:rhel_tus:8.8"], "defaultStatus": "affected", "packageName": "xorg-x11-server", "product": "Red Hat Enterprise Linux 8.8 Telecommunications Update Service", "vendor": "Red Hat", "versions": [{"lessThan": "*", "status": "unaffected", "version": "0:1.20.11-19.el8_8", "versionType": "rpm"}]}, {"collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "cpes": ["cpe:/a:redhat:rhel_tus:8.8"], "defaultStatus": "affected", "packageName": "xorg-x11-server-Xwayland", "product": "Red Hat Enterprise Linux 8.8 Telecommunications Update Service", "vendor": "Red Hat", "versions": [{"lessThan": "*", "status": "unaffected", "version": "0:21.1.3-13.el8_8.1", "versionType": "rpm"}]}, {"collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "cpes": ["cpe:/a:redhat:rhel_tus:8.8"], "defaultStatus": "affected", "packageName": "tigervnc", "product": "Red Hat Enterprise Linux 8.8 Telecommunications Update Service", "vendor": "Red Hat", "versions": [{"lessThan": "*", "status": "unaffected", "version": "0:1.12.0-15.el8_8.18", "versionType": "rpm"}]}, {"collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "cpes": ["cpe:/a:redhat:rhel_e4s:8.8"], "defaultStatus": "affected", "packageName": "xorg-x11-server", "product": "Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions", "vendor": "Red Hat", "versions": [{"lessThan": "*", "status": "unaffected", "version": "0:1.20.11-19.el8_8", "versionType": "rpm"}]}, {"collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "cpes": ["cpe:/a:redhat:rhel_e4s:8.8"], "defaultStatus": "affected", "packageName": "xorg-x11-server-Xwayland", "product": "Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions", "vendor": "Red Hat", "versions": [{"lessThan": "*", "status": "unaffected", "version": "0:21.1.3-13.el8_8.1", "versionType": "rpm"}]}, {"collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "cpes": ["cpe:/a:redhat:rhel_e4s:8.8"], "defaultStatus": "affected", "packageName": "tigervnc", "product": "Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions", "vendor": "Red Hat", "versions": [{"lessThan": "*", "status": "unaffected", "version": "0:1.12.0-15.el8_8.18", "versionType": "rpm"}]}, {"collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "cpes": ["cpe:/a:redhat:enterprise_linux:9"], "defaultStatus": "affected", "packageName": "xorg-x11-server-Xwayland", "product": "Red Hat Enterprise Linux 9", "vendor": "Red Hat", "versions": [{"lessThan": "*", "status": "unaffected", "version": "0:24.1.9-4.el9_8.2", "versionType": "rpm"}]}, {"collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "cpes": ["cpe:/a:redhat:enterprise_linux:9"], "defaultStatus": "affected", "packageName": "xorg-x11-server", "product": "Red Hat Enterprise Linux 9", "vendor": "Red Hat", "versions": [{"lessThan": "*", "status": "unaffected", "version": "0:1.20.11-34.el9_8.2", "versionType": "rpm"}]}, {"collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "cpes": ["cpe:/a:redhat:enterprise_linux:9"], "defaultStatus": "affected", "packageName": "tigervnc", "product": "Red Hat Enterprise Linux 9", "vendor": "Red Hat", "versions": [{"lessThan": "*", "status": "unaffected", "version": "0:1.15.0-7.el9_8.2", "versionType": "rpm"}]}, {"collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "cpes": ["cpe:/a:redhat:rhel_e4s:9.2"], "defaultStatus": "affected", "packageName": "xorg-x11-server", "product": "Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions", "vendor": "Red Hat", "versions": [{"lessThan": "*", "status": "unaffected", "version": "0:1.20.11-21.el9_2", "versionType": "rpm"}]}, {"collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "cpes": ["cpe:/a:redhat:rhel_e4s:9.2"], "defaultStatus": "affected", "packageName": "xorg-x11-server-Xwayland", "product": "Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions", "vendor": "Red Hat", "versions": [{"lessThan": "*", "status": "unaffected", "version": "0:21.1.3-10.el9_2.1", "versionType": "rpm"}]}, {"collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "cpes": ["cpe:/a:redhat:rhel_e4s:9.2"], "defaultStatus": "affected", "packageName": "tigervnc", "product": "Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions", "vendor": "Red Hat", "versions": [{"lessThan": "*", "status": "unaffected", "version": "0:1.12.0-14.el9_2.15", "versionType": "rpm"}]}, {"collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "cpes": ["cpe:/a:redhat:rhel_e4s:9.4"], "defaultStatus": "affected", "packageName": "xorg-x11-server", "product": "Red Hat Enterprise Linux 9.4 Update Services for SAP Solutions", "vendor": "Red Hat", "versions": [{"lessThan": "*", "status": "unaffected", "version": "0:1.20.11-29.el9_4", "versionType": "rpm"}]}, {"collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "cpes": ["cpe:/a:redhat:rhel_e4s:9.4"], "defaultStatus": "affected", "packageName": "xorg-x11-server-Xwayland", "product": "Red Hat Enterprise Linux 9.4 Update Services for SAP Solutions", "vendor": "Red Hat", "versions": [{"lessThan": "*", "status": "unaffected", "version": "0:22.1.9-8.el9_4.1", "versionType": "rpm"}]}, {"collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "cpes": ["cpe:/a:redhat:rhel_e4s:9.4"], "defaultStatus": "affected", "packageName": "tigervnc", "product": "Red Hat Enterprise Linux 9.4 Update Services for SAP Solutions", "vendor": "Red Hat", "versions": [{"lessThan": "*", "status": "unaffected", "version": "0:1.13.1-8.el9_4.10", "versionType": "rpm"}]}, {"collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "cpes": ["cpe:/a:redhat:rhel_eus:9.6"], "defaultStatus": "affected", "packageName": "xorg-x11-server", "product": "Red Hat Enterprise Linux 9.6 Extended Update Support", "vendor": "Red Hat", "versions": [{"lessThan": "*", "status": "unaffected", "version": "0:1.20.11-34.el9_6", "versionType": "rpm"}]}, {"collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "cpes": ["cpe:/a:redhat:rhel_eus:9.6"], "defaultStatus": "affected", "packageName": "xorg-x11-server-Xwayland", "product": "Red Hat Enterprise Linux 9.6 Extended Update Support", "vendor": "Red Hat", "versions": [{"lessThan": "*", "status": "unaffected", "version": "0:23.2.7-6.el9_6.1", "versionType": "rpm"}]}, {"collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "cpes": ["cpe:/a:redhat:rhel_eus:9.6"], "defaultStatus": "affected", "packageName": "tigervnc", "product": "Red Hat Enterprise Linux 9.6 Extended Update Support", "vendor": "Red Hat", "versions": [{"lessThan": "*", "status": "unaffected", "version": "0:1.14.1-11.el9_6", "versionType": "rpm"}]}, {"collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "cpes": ["cpe:/o:redhat:enterprise_linux:6"], "defaultStatus": "unknown", "packageName": "xorg-x11-server", "product": "Red Hat Enterprise Linux 6", "vendor": "Red Hat"}], "datePublic": "2026-06-02T00:00:00.000Z", "descriptions": [{"lang": "en", "value": "A use-after-free flaw was found in the X.Org X server and Xwayland in SyncChangeCounter(). A client that sets up multiple SyncCounters can trigger a use-after-free when destroying those counters via a second client connection while changing those counters. This may be used to crash the server, or for privilege escalation if the X server runs as root."}], "metrics": [{"other": {"content": {"namespace": "https://access.redhat.com/security/updates/classification/", "value": "Important"}, "type": "Red Hat severity rating"}}, {"cvssV3_1": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 7.8, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "version": "3.1"}, "format": "CVSS"}], "problemTypes": [{"descriptions": [{"cweId": "CWE-416", "description": "Use After Free", "lang": "en", "type": "CWE"}]}], "references": [{"tags": ["vdb-entry", "x_refsource_REDHAT"], "url": "https://access.redhat.com/security/cve/CVE-2026-50261"}, {"name": "RHBZ#2485386", "tags": ["issue-tracking", "x_refsource_REDHAT"], "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2485386"}, {"tags": ["x_sadp-csaf-vex"], "url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-50261.json"}, {"tags": ["vendor-advisory", "x_refsource_REDHAT"], "url": "https://access.redhat.com/errata/RHSA-2026:49519"}, {"tags": ["vendor-advisory", "x_refsource_REDHAT"], "url": "https://access.redhat.com/errata/RHSA-2026:46473"}, {"tags": ["vendor-advisory", "x_refsource_REDHAT"], "url": "https://access.redhat.com/errata/RHSA-2026:36083"}, {"tags": ["vendor-advisory", "x_refsource_REDHAT"], "url": "https://access.redhat.com/errata/RHSA-2026:36798"}, {"tags": ["vendor-advisory", "x_refsource_REDHAT"], "url": "https://access.redhat.com/errata/RHSA-2026:26566"}, {"tags": ["vendor-advisory", "x_refsource_REDHAT"], "url": "https://access.redhat.com/errata/RHSA-2026:28923"}, {"tags": ["vendor-advisory", "x_refsource_REDHAT"], "url": "https://access.redhat.com/errata/RHSA-2026:26709"}, {"tags": ["vendor-advisory", "x_refsource_REDHAT"], "url": "https://access.redhat.com/errata/RHSA-2026:26562"}, {"tags": ["vendor-advisory", "x_refsource_REDHAT"], "url": "https://access.redhat.com/errata/RHSA-2026:46382"}, {"tags": ["vendor-advisory", "x_refsource_REDHAT"], "url": "https://access.redhat.com/errata/RHSA-2026:36792"}, {"tags": ["vendor-advisory", "x_refsource_REDHAT"], "url": "https://access.redhat.com/errata/RHSA-2026:46460"}, {"tags": ["vendor-advisory", "x_refsource_REDHAT"], "url": "https://access.redhat.com/errata/RHSA-2026:36791"}, {"tags": ["vendor-advisory", "x_refsource_REDHAT"], "url": "https://access.redhat.com/errata/RHSA-2026:38810"}, {"tags": ["vendor-advisory", "x_refsource_REDHAT"], "url": "https://access.redhat.com/errata/RHSA-2026:46385"}, {"tags": ["vendor-advisory", "x_refsource_REDHAT"], "url": "https://access.redhat.com/errata/RHSA-2026:36768"}, {"tags": ["vendor-advisory", "x_refsource_REDHAT"], "url": "https://access.redhat.com/errata/RHSA-2026:38502"}, {"tags": ["vendor-advisory", "x_refsource_REDHAT"], "url": "https://access.redhat.com/errata/RHSA-2026:46377"}, {"tags": ["vendor-advisory", "x_refsource_REDHAT"], "url": "https://access.redhat.com/errata/RHSA-2026:36086"}, {"tags": ["vendor-advisory", "x_refsource_REDHAT"], "url": "https://access.redhat.com/errata/RHSA-2026:36633"}, {"tags": ["vendor-advisory", "x_refsource_REDHAT"], "url": "https://access.redhat.com/errata/RHSA-2026:46456"}, {"tags": ["vendor-advisory", "x_refsource_REDHAT"], "url": "https://access.redhat.com/errata/RHSA-2026:36087"}, {"tags": ["vendor-advisory", "x_refsource_REDHAT"], "url": "https://access.redhat.com/errata/RHSA-2026:36632"}, {"tags": ["vendor-advisory", "x_refsource_REDHAT"], "url": "https://access.redhat.com/errata/RHSA-2026:46392"}, {"tags": ["vendor-advisory", "x_refsource_REDHAT"], "url": "https://access.redhat.com/errata/RHSA-2026:36085"}, {"tags": ["vendor-advisory", "x_refsource_REDHAT"], "url": "https://access.redhat.com/errata/RHSA-2026:36634"}, {"tags": ["vendor-advisory", "x_refsource_REDHAT"], "url": "https://access.redhat.com/errata/RHSA-2026:29844"}, {"tags": ["vendor-advisory", "x_refsource_REDHAT"], "url": "https://access.redhat.com/errata/RHSA-2026:26610"}, {"tags": ["vendor-advisory", "x_refsource_REDHAT"], "url": "https://access.redhat.com/errata/RHSA-2026:26590"}], "solutions": [{"lang": "en", "value": "RHSA-2026:49519: Red Hat Enterprise Linux Server -EXTENSION(v. 6 ELS-EXTENSION), Red Hat Enterprise Linux Server Optional -EXTENSION (v. 6 ELS -EXTENSION)"}, {"lang": "en", "value": "RHSA-2026:46473: Red Hat Enterprise Linux Server (v. 7 ELS), Red Hat Enterprise Linux Server Optional (v. 7 ELS)"}, {"lang": "en", "value": "RHSA-2026:36083: Red Hat Enterprise Linux Server (v. 7 ELS), Red Hat Enterprise Linux Server Optional (v. 7 ELS)"}, {"lang": "en", "value": "RHSA-2026:36798: Red Hat Enterprise Linux AppStream EUS (v. 10.0), Red Hat Enterprise Linux CodeReady Linux Builder EUS (v. 10.0)"}, {"lang": "en", "value": "RHSA-2026:26566: Red Hat Enterprise Linux AppStream (v. 10), Red Hat Enterprise Linux CodeReady Linux Builder (v. 10)"}, {"lang": "en", "value": "RHSA-2026:28923: Red Hat Enterprise Linux AppStream (v. 8)"}, {"lang": "en", "value": "RHSA-2026:26709: Red Hat Enterprise Linux AppStream (v. 8), Red Hat Enterprise Linux CRB (v. 8)"}, {"lang": "en", "value": "RHSA-2026:26562: Red Hat Enterprise Linux AppStream (v. 8)"}, {"lang": "en", "value": "RHSA-2026:46382: Red Hat Enterprise Linux AppStream AUS (v.8.4), Red Hat Enterprise Linux AppStream EUS EXTENSION (v.8.4)"}, {"lang": "en", "value": "RHSA-2026:36792: Red Hat Enterprise Linux AppStream AUS (v.8.4), Red Hat Enterprise Linux AppStream EUS EXTENSION (v.8.4)"}, {"lang": "en", "value": "RHSA-2026:46460: Red Hat Enterprise Linux AppStream AUS (v.8.6), Red Hat Enterprise Linux AppStream EUS EXTENSION (v.8.6)"}, {"lang": "en", "value": "RHSA-2026:36791: Red Hat Enterprise Linux AppStream AUS (v.8.6), Red Hat Enterprise Linux AppStream EUS EXTENSION (v.8.6)"}, {"lang": "en", "value": "RHSA-2026:38810: Red Hat Enterprise Linux AppStream AUS (v.8.6), Red Hat Enterprise Linux AppStream EUS EXTENSION (v.8.6)"}, {"lang": "en", "value": "RHSA-2026:46385: Red Hat Enterprise Linux AppStream E4S (v.8.8), Red Hat Enterprise Linux AppStream TUS (v.8.8)"}, {"lang": "en", "value": "RHSA-2026:36768: Red Hat Enterprise Linux AppStream E4S (v.8.8), Red Hat Enterprise Linux AppStream TUS (v.8.8)"}, {"lang": "en", "value": "RHSA-2026:38502: Red Hat Enterprise Linux AppStream E4S (v.8.8), Red Hat Enterprise Linux AppStream TUS (v.8.8)"}, {"lang": "en", "value": "RHSA-2026:46377: Red Hat Enterprise Linux AppStream E4S (v.9.2)"}, {"lang": "en", "value": "RHSA-2026:36086: Red Hat Enterprise Linux AppStream E4S (v.9.2)"}, {"lang": "en", "value": "RHSA-2026:36633: Red Hat Enterprise Linux AppStream E4S (v.9.2)"}, {"lang": "en", "value": "RHSA-2026:46456: Red Hat Enterprise Linux AppStream E4S (v.9.4)"}, {"lang": "en", "value": "RHSA-2026:36087: Red Hat Enterprise Linux AppStream E4S (v.9.4)"}, {"lang": "en", "value": "RHSA-2026:36632: Red Hat Enterprise Linux AppStream E4S (v.9.4)"}, {"lang": "en", "value": "RHSA-2026:46392: Red Hat Enterprise Linux AppStream EUS (v.9.6)"}, {"lang": "en", "value": "RHSA-2026:36085: Red Hat CodeReady Linux Builder EUS (v.9.6), Red Hat Enterprise Linux AppStream EUS (v.9.6)"}, {"lang": "en", "value": "RHSA-2026:36634: Red Hat CodeReady Linux Builder EUS (v.9.6), Red Hat Enterprise Linux AppStream EUS (v.9.6)"}, {"lang": "en", "value": "RHSA-2026:29844: Red Hat Enterprise Linux AppStream (v. 9)"}, {"lang": "en", "value": "RHSA-2026:26610: Red Hat Enterprise Linux AppStream (v. 9), Red Hat Enterprise Linux CodeReady Linux Builder (v. 9)"}, {"lang": "en", "value": "RHSA-2026:26590: Red Hat Enterprise Linux AppStream (v. 9), Red Hat Enterprise Linux CodeReady Linux Builder (v. 9)"}], "timeline": [{"lang": "en", "time": "2026-05-15T03:14:46.000Z", "value": "Reported to Red Hat."}, {"lang": "en", "time": "2026-06-02T00:00:00.000Z", "value": "Made public."}], "title": "xorg-x11-server: xorg-x11-server-Xwayland: xorg-x11-server: use-after-free in SyncChangeCounter()", "x_adpType": "supplier", "x_generator": {"engine": "sadp-cli 1.0.0"}, "providerMetadata": {"orgId": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c", "shortName": "redhat-SADP", "dateUpdated": "2026-08-05T12:15:02.252Z"}}]}}

{"dataType": "CVE_RECORD", "containers": {"adp": [{"title": "xorg-x11-server: xorg-x11-server-Xwayland: xorg-x11-server: use-after-free in SyncChangeCounter()", "metrics": [{"other": {"type": "Red Hat severity rating", "content": {"value": "Important", "namespace": "https://access.redhat.com/security/updates/classification/"}}}, {"format": "CVSS", "cvssV3_1": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 7.8, "attackVector": "LOCAL", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "integrityImpact": "HIGH", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "LOW", "confidentialityImpact": "HIGH"}}], "affected": [{"cpes": ["cpe:/o:redhat:enterprise_linux:10.2"], "vendor": "Red Hat", "product": "Red Hat Enterprise Linux 10", "versions": [{"status": "unaffected", "version": "0:24.1.9-4.el10_2.2", "lessThan": "*", "versionType": "rpm"}], "packageName": "xorg-x11-server-Xwayland", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "defaultStatus": "affected"}, {"cpes": ["cpe:/o:redhat:enterprise_linux_eus:10.0"], "vendor": "Red Hat", "product": "Red Hat Enterprise Linux 10.0 Extended Update Support", "versions": [{"status": "unaffected", "version": "0:24.1.5-6.el10_0.1", "lessThan": "*", "versionType": "rpm"}], "packageName": "xorg-x11-server-Xwayland", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "defaultStatus": "affected"}, {"cpes": ["cpe:/o:redhat:rhel_els:6"], "vendor": "Red Hat", "product": "Red Hat Enterprise Linux 6 Extended Lifecycle Support - EXTENSION", "versions": [{"status": "unaffected", "version": "0:1.1.0-25.el6_10.18", "lessThan": "*", "versionType": "rpm"}], "packageName": "tigervnc", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "defaultStatus": "affected"}, {"cpes": ["cpe:/o:redhat:rhel_els:7"], "vendor": "Red Hat", "product": "Red Hat Enterprise Linux 7 Extended Lifecycle Support", "versions": [{"status": "unaffected", "version": "0:1.20.4-35.el7_9", "lessThan": "*", "versionType": "rpm"}], "packageName": "xorg-x11-server", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "defaultStatus": "affected"}, {"cpes": ["cpe:/o:redhat:rhel_els:7"], "vendor": "Red Hat", "product": "Red Hat Enterprise Linux 7 Extended Lifecycle Support", "versions": [{"status": "unaffected", "version": "0:1.8.0-36.el7_9.5", "lessThan": "*", "versionType": "rpm"}], "packageName": "tigervnc", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "defaultStatus": "affected"}, {"cpes": ["cpe:/a:redhat:enterprise_linux:8"], "vendor": "Red Hat", "product": "Red Hat Enterprise Linux 8", "versions": [{"status": "unaffected", "version": "0:21.1.3-20.el8_10.2", "lessThan": "*", "versionType": "rpm"}], "packageName": "xorg-x11-server-Xwayland", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "defaultStatus": "affected"}, {"cpes": ["cpe:/a:redhat:enterprise_linux:8"], "vendor": "Red Hat", "product": "Red Hat Enterprise Linux 8", "versions": [{"status": "unaffected", "version": "0:1.20.11-28.el8_10.2", "lessThan": "*", "versionType": "rpm"}], "packageName": "xorg-x11-server", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "defaultStatus": "affected"}, {"cpes": ["cpe:/a:redhat:enterprise_linux:8"], "vendor": "Red Hat", "product": "Red Hat Enterprise Linux 8", "versions": [{"status": "unaffected", "version": "0:1.15.0-10.el8_10", "lessThan": "*", "versionType": "rpm"}], "packageName": "tigervnc", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "defaultStatus": "affected"}, {"cpes": ["cpe:/a:redhat:rhel_aus:8.4"], "vendor": "Red Hat", "product": "Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support", "versions": [{"status": "unaffected", "version": "0:1.20.10-5.el8_4", "lessThan": "*", "versionType": "rpm"}], "packageName": "xorg-x11-server", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "defaultStatus": "affected"}, {"cpes": ["cpe:/a:redhat:rhel_aus:8.4"], "vendor": "Red Hat", "product": "Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support", "versions": [{"status": "unaffected", "version": "0:1.11.0-8.el8_4.16", "lessThan": "*", "versionType": "rpm"}], "packageName": "tigervnc", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "defaultStatus": "affected"}, {"cpes": ["cpe:/a:redhat:rhel_eus_long_life:8.4"], "vendor": "Red Hat", "product": "Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On", "versions": [{"status": "unaffected", "version": "0:1.20.10-5.el8_4", "lessThan": "*", "versionType": "rpm"}], "packageName": "xorg-x11-server", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "defaultStatus": "affected"}, {"cpes": ["cpe:/a:redhat:rhel_eus_long_life:8.4"], "vendor": "Red Hat", "product": "Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On", "versions": [{"status": "unaffected", "version": "0:1.11.0-8.el8_4.16", "lessThan": "*", "versionType": "rpm"}], "packageName": "tigervnc", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "defaultStatus": "affected"}, {"cpes": ["cpe:/a:redhat:rhel_aus:8.6"], "vendor": "Red Hat", "product": "Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support", "versions": [{"status": "unaffected", "version": "0:1.20.11-8.el8_6", "lessThan": "*", "versionType": "rpm"}], "packageName": "xorg-x11-server", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "defaultStatus": "affected"}, {"cpes": ["cpe:/a:redhat:rhel_aus:8.6"], "vendor": "Red Hat", "product": "Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support", "versions": [{"status": "unaffected", "version": "0:21.1.3-2.el8_6.7", "lessThan": "*", "versionType": "rpm"}], "packageName": "xorg-x11-server-Xwayland", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "defaultStatus": "affected"}, {"cpes": ["cpe:/a:redhat:rhel_aus:8.6"], "vendor": "Red Hat", "product": "Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support", "versions": [{"status": "unaffected", "version": "0:1.12.0-6.el8_6.18", "lessThan": "*", "versionType": "rpm"}], "packageName": "tigervnc", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "defaultStatus": "affected"}, {"cpes": ["cpe:/a:redhat:rhel_eus_long_life:8.6"], "vendor": "Red Hat", "product": "Red Hat Enterprise Linux 8.6 Extended Update Support Long-Life Add-On", "versions": [{"status": "unaffected", "version": "0:1.20.11-8.el8_6", "lessThan": "*", "versionType": "rpm"}], "packageName": "xorg-x11-server", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "defaultStatus": "affected"}, {"cpes": ["cpe:/a:redhat:rhel_eus_long_life:8.6"], "vendor": "Red Hat", "product": "Red Hat Enterprise Linux 8.6 Extended Update Support Long-Life Add-On", "versions": [{"status": "unaffected", "version": "0:21.1.3-2.el8_6.7", "lessThan": "*", "versionType": "rpm"}], "packageName": "xorg-x11-server-Xwayland", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "defaultStatus": "affected"}, {"cpes": ["cpe:/a:redhat:rhel_eus_long_life:8.6"], "vendor": "Red Hat", "product": "Red Hat Enterprise Linux 8.6 Extended Update Support Long-Life Add-On", "versions": [{"status": "unaffected", "version": "0:1.12.0-6.el8_6.18", "lessThan": "*", "versionType": "rpm"}], "packageName": "tigervnc", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "defaultStatus": "affected"}, {"cpes": ["cpe:/a:redhat:rhel_tus:8.8"], "vendor": "Red Hat", "product": "Red Hat Enterprise Linux 8.8 Telecommunications Update Service", "versions": [{"status": "unaffected", "version": "0:1.20.11-19.el8_8", "lessThan": "*", "versionType": "rpm"}], "packageName": "xorg-x11-server", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "defaultStatus": "affected"}, {"cpes": ["cpe:/a:redhat:rhel_tus:8.8"], "vendor": "Red Hat", "product": "Red Hat Enterprise Linux 8.8 Telecommunications Update Service", "versions": [{"status": "unaffected", "version": "0:21.1.3-13.el8_8.1", "lessThan": "*", "versionType": "rpm"}], "packageName": "xorg-x11-server-Xwayland", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "defaultStatus": "affected"}, {"cpes": ["cpe:/a:redhat:rhel_tus:8.8"], "vendor": "Red Hat", "product": "Red Hat Enterprise Linux 8.8 Telecommunications Update Service", "versions": [{"status": "unaffected", "version": "0:1.12.0-15.el8_8.18", "lessThan": "*", "versionType": "rpm"}], "packageName": "tigervnc", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "defaultStatus": "affected"}, {"cpes": ["cpe:/a:redhat:rhel_e4s:8.8"], "vendor": "Red Hat", "product": "Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions", "versions": [{"status": "unaffected", "version": "0:1.20.11-19.el8_8", "lessThan": "*", "versionType": "rpm"}], "packageName": "xorg-x11-server", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "defaultStatus": "affected"}, {"cpes": ["cpe:/a:redhat:rhel_e4s:8.8"], "vendor": "Red Hat", "product": "Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions", "versions": [{"status": "unaffected", "version": "0:21.1.3-13.el8_8.1", "lessThan": "*", "versionType": "rpm"}], "packageName": "xorg-x11-server-Xwayland", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "defaultStatus": "affected"}, {"cpes": ["cpe:/a:redhat:rhel_e4s:8.8"], "vendor": "Red Hat", "product": "Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions", "versions": [{"status": "unaffected", "version": "0:1.12.0-15.el8_8.18", "lessThan": "*", "versionType": "rpm"}], "packageName": "tigervnc", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "defaultStatus": "affected"}, {"cpes": ["cpe:/a:redhat:enterprise_linux:9"], "vendor": "Red Hat", "product": "Red Hat Enterprise Linux 9", "versions": [{"status": "unaffected", "version": "0:24.1.9-4.el9_8.2", "lessThan": "*", "versionType": "rpm"}], "packageName": "xorg-x11-server-Xwayland", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "defaultStatus": "affected"}, {"cpes": ["cpe:/a:redhat:enterprise_linux:9"], "vendor": "Red Hat", "product": "Red Hat Enterprise Linux 9", "versions": [{"status": "unaffected", "version": "0:1.20.11-34.el9_8.2", "lessThan": "*", "versionType": "rpm"}], "packageName": "xorg-x11-server", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "defaultStatus": "affected"}, {"cpes": ["cpe:/a:redhat:enterprise_linux:9"], "vendor": "Red Hat", "product": "Red Hat Enterprise Linux 9", "versions": [{"status": "unaffected", "version": "0:1.15.0-7.el9_8.2", "lessThan": "*", "versionType": "rpm"}], "packageName": "tigervnc", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "defaultStatus": "affected"}, {"cpes": ["cpe:/a:redhat:rhel_e4s:9.2"], "vendor": "Red Hat", "product": "Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions", "versions": [{"status": "unaffected", "version": "0:1.20.11-21.el9_2", "lessThan": "*", "versionType": "rpm"}], "packageName": "xorg-x11-server", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "defaultStatus": "affected"}, {"cpes": ["cpe:/a:redhat:rhel_e4s:9.2"], "vendor": "Red Hat", "product": "Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions", "versions": [{"status": "unaffected", "version": "0:21.1.3-10.el9_2.1", "lessThan": "*", "versionType": "rpm"}], "packageName": "xorg-x11-server-Xwayland", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "defaultStatus": "affected"}, {"cpes": ["cpe:/a:redhat:rhel_e4s:9.2"], "vendor": "Red Hat", "product": "Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions", "versions": [{"status": "unaffected", "version": "0:1.12.0-14.el9_2.15", "lessThan": "*", "versionType": "rpm"}], "packageName": "tigervnc", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "defaultStatus": "affected"}, {"cpes": ["cpe:/a:redhat:rhel_e4s:9.4"], "vendor": "Red Hat", "product": "Red Hat Enterprise Linux 9.4 Update Services for SAP Solutions", "versions": [{"status": "unaffected", "version": "0:1.20.11-29.el9_4", "lessThan": "*", "versionType": "rpm"}], "packageName": "xorg-x11-server", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "defaultStatus": "affected"}, {"cpes": ["cpe:/a:redhat:rhel_e4s:9.4"], "vendor": "Red Hat", "product": "Red Hat Enterprise Linux 9.4 Update Services for SAP Solutions", "versions": [{"status": "unaffected", "version": "0:22.1.9-8.el9_4.1", "lessThan": "*", "versionType": "rpm"}], "packageName": "xorg-x11-server-Xwayland", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "defaultStatus": "affected"}, {"cpes": ["cpe:/a:redhat:rhel_e4s:9.4"], "vendor": "Red Hat", "product": "Red Hat Enterprise Linux 9.4 Update Services for SAP Solutions", "versions": [{"status": "unaffected", "version": "0:1.13.1-8.el9_4.10", "lessThan": "*", "versionType": "rpm"}], "packageName": "tigervnc", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "defaultStatus": "affected"}, {"cpes": ["cpe:/a:redhat:rhel_eus:9.6"], "vendor": "Red Hat", "product": "Red Hat Enterprise Linux 9.6 Extended Update Support", "versions": [{"status": "unaffected", "version": "0:1.20.11-34.el9_6", "lessThan": "*", "versionType": "rpm"}], "packageName": "xorg-x11-server", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "defaultStatus": "affected"}, {"cpes": ["cpe:/a:redhat:rhel_eus:9.6"], "vendor": "Red Hat", "product": "Red Hat Enterprise Linux 9.6 Extended Update Support", "versions": [{"status": "unaffected", "version": "0:23.2.7-6.el9_6.1", "lessThan": "*", "versionType": "rpm"}], "packageName": "xorg-x11-server-Xwayland", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "defaultStatus": "affected"}, {"cpes": ["cpe:/a:redhat:rhel_eus:9.6"], "vendor": "Red Hat", "product": "Red Hat Enterprise Linux 9.6 Extended Update Support", "versions": [{"status": "unaffected", "version": "0:1.14.1-11.el9_6", "lessThan": "*", "versionType": "rpm"}], "packageName": "tigervnc", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "defaultStatus": "affected"}, {"cpes": ["cpe:/o:redhat:enterprise_linux:6"], "vendor": "Red Hat", "product": "Red Hat Enterprise Linux 6", "packageName": "xorg-x11-server", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "defaultStatus": "unknown"}], "timeline": [{"lang": "en", "time": "2026-05-15T03:14:46.000Z", "value": "Reported to Red Hat."}, {"lang": "en", "time": "2026-06-02T00:00:00.000Z", "value": "Made public."}], "solutions": [{"lang": "en", "value": "RHSA-2026:49519: Red Hat Enterprise Linux Server -EXTENSION(v. 6 ELS-EXTENSION), Red Hat Enterprise Linux Server Optional -EXTENSION (v. 6 ELS -EXTENSION)"}, {"lang": "en", "value": "RHSA-2026:46473: Red Hat Enterprise Linux Server (v. 7 ELS), Red Hat Enterprise Linux Server Optional (v. 7 ELS)"}, {"lang": "en", "value": "RHSA-2026:36083: Red Hat Enterprise Linux Server (v. 7 ELS), Red Hat Enterprise Linux Server Optional (v. 7 ELS)"}, {"lang": "en", "value": "RHSA-2026:36798: Red Hat Enterprise Linux AppStream EUS (v. 10.0), Red Hat Enterprise Linux CodeReady Linux Builder EUS (v. 10.0)"}, {"lang": "en", "value": "RHSA-2026:26566: Red Hat Enterprise Linux AppStream (v. 10), Red Hat Enterprise Linux CodeReady Linux Builder (v. 10)"}, {"lang": "en", "value": "RHSA-2026:28923: Red Hat Enterprise Linux AppStream (v. 8)"}, {"lang": "en", "value": "RHSA-2026:26709: Red Hat Enterprise Linux AppStream (v. 8), Red Hat Enterprise Linux CRB (v. 8)"}, {"lang": "en", "value": "RHSA-2026:26562: Red Hat Enterprise Linux AppStream (v. 8)"}, {"lang": "en", "value": "RHSA-2026:46382: Red Hat Enterprise Linux AppStream AUS (v.8.4), Red Hat Enterprise Linux AppStream EUS EXTENSION (v.8.4)"}, {"lang": "en", "value": "RHSA-2026:36792: Red Hat Enterprise Linux AppStream AUS (v.8.4), Red Hat Enterprise Linux AppStream EUS EXTENSION (v.8.4)"}, {"lang": "en", "value": "RHSA-2026:46460: Red Hat Enterprise Linux AppStream AUS (v.8.6), Red Hat Enterprise Linux AppStream EUS EXTENSION (v.8.6)"}, {"lang": "en", "value": "RHSA-2026:36791: Red Hat Enterprise Linux AppStream AUS (v.8.6), Red Hat Enterprise Linux AppStream EUS EXTENSION (v.8.6)"}, {"lang": "en", "value": "RHSA-2026:38810: Red Hat Enterprise Linux AppStream AUS (v.8.6), Red Hat Enterprise Linux AppStream EUS EXTENSION (v.8.6)"}, {"lang": "en", "value": "RHSA-2026:46385: Red Hat Enterprise Linux AppStream E4S (v.8.8), Red Hat Enterprise Linux AppStream TUS (v.8.8)"}, {"lang": "en", "value": "RHSA-2026:36768: Red Hat Enterprise Linux AppStream E4S (v.8.8), Red Hat Enterprise Linux AppStream TUS (v.8.8)"}, {"lang": "en", "value": "RHSA-2026:38502: Red Hat Enterprise Linux AppStream E4S (v.8.8), Red Hat Enterprise Linux AppStream TUS (v.8.8)"}, {"lang": "en", "value": "RHSA-2026:46377: Red Hat Enterprise Linux AppStream E4S (v.9.2)"}, {"lang": "en", "value": "RHSA-2026:36086: Red Hat Enterprise Linux AppStream E4S (v.9.2)"}, {"lang": "en", "value": "RHSA-2026:36633: Red Hat Enterprise Linux AppStream E4S (v.9.2)"}, {"lang": "en", "value": "RHSA-2026:46456: Red Hat Enterprise Linux AppStream E4S (v.9.4)"}, {"lang": "en", "value": "RHSA-2026:36087: Red Hat Enterprise Linux AppStream E4S (v.9.4)"}, {"lang": "en", "value": "RHSA-2026:36632: Red Hat Enterprise Linux AppStream E4S (v.9.4)"}, {"lang": "en", "value": "RHSA-2026:46392: Red Hat Enterprise Linux AppStream EUS (v.9.6)"}, {"lang": "en", "value": "RHSA-2026:36085: Red Hat CodeReady Linux Builder EUS (v.9.6), Red Hat Enterprise Linux AppStream EUS (v.9.6)"}, {"lang": "en", "value": "RHSA-2026:36634: Red Hat CodeReady Linux Builder EUS (v.9.6), Red Hat Enterprise Linux AppStream EUS (v.9.6)"}, {"lang": "en", "value": "RHSA-2026:29844: Red Hat Enterprise Linux AppStream (v. 9)"}, {"lang": "en", "value": "RHSA-2026:26610: Red Hat Enterprise Linux AppStream (v. 9), Red Hat Enterprise Linux CodeReady Linux Builder (v. 9)"}, {"lang": "en", "value": "RHSA-2026:26590: Red Hat Enterprise Linux AppStream (v. 9), Red Hat Enterprise Linux CodeReady Linux Builder (v. 9)"}], "x_adpType": "supplier", "datePublic": "2026-06-02T00:00:00.000Z", "references": [{"url": "https://access.redhat.com/security/cve/CVE-2026-50261", "tags": ["vdb-entry", "x_refsource_REDHAT"]}, {"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2485386", "name": "RHBZ#2485386", "tags": ["issue-tracking", "x_refsource_REDHAT"]}, {"url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-50261.json", "tags": ["x_sadp-csaf-vex"]}, {"url": "https://access.redhat.com/errata/RHSA-2026:49519", "tags": ["vendor-advisory", "x_refsource_REDHAT"]}, {"url": "https://access.redhat.com/errata/RHSA-2026:46473", "tags": ["vendor-advisory", "x_refsource_REDHAT"]}, {"url": "https://access.redhat.com/errata/RHSA-2026:36083", "tags": ["vendor-advisory", "x_refsource_REDHAT"]}, {"url": "https://access.redhat.com/errata/RHSA-2026:36798", "tags": ["vendor-advisory", "x_refsource_REDHAT"]}, {"url": "https://access.redhat.com/errata/RHSA-2026:26566", "tags": ["vendor-advisory", "x_refsource_REDHAT"]}, {"url": "https://access.redhat.com/errata/RHSA-2026:28923", "tags": ["vendor-advisory", "x_refsource_REDHAT"]}, {"url": "https://access.redhat.com/errata/RHSA-2026:26709", "tags": ["vendor-advisory", "x_refsource_REDHAT"]}, {"url": "https://access.redhat.com/errata/RHSA-2026:26562", "tags": ["vendor-advisory", "x_refsource_REDHAT"]}, {"url": "https://access.redhat.com/errata/RHSA-2026:46382", "tags": ["vendor-advisory", "x_refsource_REDHAT"]}, {"url": "https://access.redhat.com/errata/RHSA-2026:36792", "tags": ["vendor-advisory", "x_refsource_REDHAT"]}, {"url": "https://access.redhat.com/errata/RHSA-2026:46460", "tags": ["vendor-advisory", "x_refsource_REDHAT"]}, {"url": "https://access.redhat.com/errata/RHSA-2026:36791", "tags": ["vendor-advisory", "x_refsource_REDHAT"]}, {"url": "https://access.redhat.com/errata/RHSA-2026:38810", "tags": ["vendor-advisory", "x_refsource_REDHAT"]}, {"url": "https://access.redhat.com/errata/RHSA-2026:46385", "tags": ["vendor-advisory", "x_refsource_REDHAT"]}, {"url": "https://access.redhat.com/errata/RHSA-2026:36768", "tags": ["vendor-advisory", "x_refsource_REDHAT"]}, {"url": "https://access.redhat.com/errata/RHSA-2026:38502", "tags": ["vendor-advisory", "x_refsource_REDHAT"]}, {"url": "https://access.redhat.com/errata/RHSA-2026:46377", "tags": ["vendor-advisory", "x_refsource_REDHAT"]}, {"url": "https://access.redhat.com/errata/RHSA-2026:36086", "tags": ["vendor-advisory", "x_refsource_REDHAT"]}, {"url": "https://access.redhat.com/errata/RHSA-2026:36633", "tags": ["vendor-advisory", "x_refsource_REDHAT"]}, {"url": "https://access.redhat.com/errata/RHSA-2026:46456", "tags": ["vendor-advisory", "x_refsource_REDHAT"]}, {"url": "https://access.redhat.com/errata/RHSA-2026:36087", "tags": ["vendor-advisory", "x_refsource_REDHAT"]}, {"url": "https://access.redhat.com/errata/RHSA-2026:36632", "tags": ["vendor-advisory", "x_refsource_REDHAT"]}, {"url": "https://access.redhat.com/errata/RHSA-2026:46392", "tags": ["vendor-advisory", "x_refsource_REDHAT"]}, {"url": "https://access.redhat.com/errata/RHSA-2026:36085", "tags": ["vendor-advisory", "x_refsource_REDHAT"]}, {"url": "https://access.redhat.com/errata/RHSA-2026:36634", "tags": ["vendor-advisory", "x_refsource_REDHAT"]}, {"url": "https://access.redhat.com/errata/RHSA-2026:29844", "tags": ["vendor-advisory", "x_refsource_REDHAT"]}, {"url": "https://access.redhat.com/errata/RHSA-2026:26610", "tags": ["vendor-advisory", "x_refsource_REDHAT"]}, {"url": "https://access.redhat.com/errata/RHSA-2026:26590", "tags": ["vendor-advisory", "x_refsource_REDHAT"]}], "x_generator": {"engine": "sadp-cli 1.0.0"}, "descriptions": [{"lang": "en", "value": "A use-after-free flaw was found in the X.Org X server and Xwayland in SyncChangeCounter(). A client that sets up multiple SyncCounters can trigger a use-after-free when destroying those counters via a second client connection while changing those counters. This may be used to crash the server, or for privilege escalation if the X server runs as root."}], "problemTypes": [{"descriptions": [{"lang": "en", "type": "CWE", "cweId": "CWE-416", "description": "Use After Free"}]}], "providerMetadata": {"orgId": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c", "shortName": "redhat-SADP", "dateUpdated": "2026-08-05T12:15:02.252Z"}}, {"title": "CISA ADP Vulnrichment", "metrics": [{"other": {"type": "ssvc", "content": {"id": "CVE-2026-50261", "role": "CISA Coordinator", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "total"}], "version": "2.0.3", "timestamp": "2026-06-05T12:38:42.608778Z"}}}], "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-06-05T12:38:49.241Z"}}], "cna": {"title": "Xorg-x11-server: xorg-x11-server-xwayland: xorg-x11-server: use-after-free in syncchangecounter()", "credits": [{"lang": "en", "value": "Upstream acknowledges Anonymous (Trend Micro Zero Day Initiative) as the original reporter."}], "metrics": [{"other": {"type": "Red Hat severity rating", "content": {"value": "Important", "namespace": "https://access.redhat.com/security/updates/classification/"}}}, {"format": "CVSS", "cvssV3_1": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 7.8, "attackVector": "LOCAL", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "integrityImpact": "HIGH", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "LOW", "confidentialityImpact": "HIGH"}}], "affected": [{"cpes": ["cpe:/o:redhat:enterprise_linux:10.2"], "vendor": "Red Hat", "product": "Red Hat Enterprise Linux 10", "versions": [{"status": "unaffected", "version": "0:24.1.9-4.el10_2.2", "lessThan": "*", "versionType": "rpm"}], "packageName": "xorg-x11-server-Xwayland", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "defaultStatus": "affected"}, {"cpes": ["cpe:/o:redhat:enterprise_linux_eus:10.0"], "vendor": "Red Hat", "product": "Red Hat Enterprise Linux 10.0 Extended Update Support", "versions": [{"status": "unaffected", "version": "0:24.1.5-6.el10_0.1", "lessThan": "*", "versionType": "rpm"}], "packageName": "xorg-x11-server-Xwayland", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "defaultStatus": "affected"}, {"cpes": ["cpe:/o:redhat:rhel_els:6"], "vendor": "Red Hat", "product": "Red Hat Enterprise Linux 6 Extended Lifecycle Support - EXTENSION", "versions": [{"status": "unaffected", "version": "0:1.1.0-25.el6_10.18", "lessThan": "*", "versionType": "rpm"}], "packageName": "tigervnc", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "defaultStatus": "affected"}, {"cpes": ["cpe:/o:redhat:rhel_els:7"], "vendor": "Red Hat", "product": "Red Hat Enterprise Linux 7 Extended Lifecycle Support", "versions": [{"status": "unaffected", "version": "0:1.20.4-35.el7_9", "lessThan": "*", "versionType": "rpm"}], "packageName": "xorg-x11-server", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "defaultStatus": "affected"}, {"cpes": ["cpe:/o:redhat:rhel_els:7"], "vendor": "Red Hat", "product": "Red Hat Enterprise Linux 7 Extended Lifecycle Support", "versions": [{"status": "unaffected", "version": "0:1.8.0-36.el7_9.5", "lessThan": "*", "versionType": "rpm"}], "packageName": "tigervnc", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "defaultStatus": "affected"}, {"cpes": ["cpe:/a:redhat:enterprise_linux:8::appstream"], "vendor": "Red Hat", "product": "Red Hat Enterprise Linux 8", "versions": [{"status": "unaffected", "version": "0:21.1.3-20.el8_10.2", "lessThan": "*", "versionType": "rpm"}], "packageName": "xorg-x11-server-Xwayland", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "defaultStatus": "affected"}, {"cpes": ["cpe:/a:redhat:enterprise_linux:8::appstream", "cpe:/a:redhat:enterprise_linux:8::crb"], "vendor": "Red Hat", "product": "Red Hat Enterprise Linux 8", "versions": [{"status": "unaffected", "version": "0:1.20.11-28.el8_10.2", "lessThan": "*", "versionType": "rpm"}], "packageName": "xorg-x11-server", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "defaultStatus": "affected"}, {"cpes": ["cpe:/a:redhat:enterprise_linux:8::appstream"], "vendor": "Red Hat", "product": "Red Hat Enterprise Linux 8", "versions": [{"status": "unaffected", "version": "0:1.15.0-10.el8_10", "lessThan": "*", "versionType": "rpm"}], "packageName": "tigervnc", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "defaultStatus": "affected"}, {"cpes": ["cpe:/a:redhat:rhel_aus:8.4::appstream", "cpe:/a:redhat:rhel_eus_long_life:8.4::appstream"], "vendor": "Red Hat", "product": "Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support", "versions": [{"status": "unaffected", "version": "0:1.20.10-5.el8_4", "lessThan": "*", "versionType": "rpm"}], "packageName": "xorg-x11-server", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "defaultStatus": "affected"}, {"cpes": ["cpe:/a:redhat:rhel_aus:8.4::appstream", "cpe:/a:redhat:rhel_eus_long_life:8.4::appstream"], "vendor": "Red Hat", "product": "Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support", "versions": [{"status": "unaffected", "version": "0:1.11.0-8.el8_4.16", "lessThan": "*", "versionType": "rpm"}], "packageName": "tigervnc", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "defaultStatus": "affected"}, {"cpes": ["cpe:/a:redhat:rhel_aus:8.4::appstream", "cpe:/a:redhat:rhel_eus_long_life:8.4::appstream"], "vendor": "Red Hat", "product": "Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On", "versions": [{"status": "unaffected", "version": "0:1.20.10-5.el8_4", "lessThan": "*", "versionType": "rpm"}], "packageName": "xorg-x11-server", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "defaultStatus": "affected"}, {"cpes": ["cpe:/a:redhat:rhel_aus:8.4::appstream", "cpe:/a:redhat:rhel_eus_long_life:8.4::appstream"], "vendor": "Red Hat", "product": "Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On", "versions": [{"status": "unaffected", "version": "0:1.11.0-8.el8_4.16", "lessThan": "*", "versionType": "rpm"}], "packageName": "tigervnc", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "defaultStatus": "affected"}, {"cpes": ["cpe:/a:redhat:rhel_aus:8.6::appstream", "cpe:/a:redhat:rhel_eus_long_life:8.6::appstream"], "vendor": "Red Hat", "product": "Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support", "versions": [{"status": "unaffected", "version": "0:1.20.11-8.el8_6", "lessThan": "*", "versionType": "rpm"}], "packageName": "xorg-x11-server", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "defaultStatus": "affected"}, {"cpes": ["cpe:/a:redhat:rhel_aus:8.6::appstream", "cpe:/a:redhat:rhel_eus_long_life:8.6::appstream"], "vendor": "Red Hat", "product": "Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support", "versions": [{"status": "unaffected", "version": "0:21.1.3-2.el8_6.7", "lessThan": "*", "versionType": "rpm"}], "packageName": "xorg-x11-server-Xwayland", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "defaultStatus": "affected"}, {"cpes": ["cpe:/a:redhat:rhel_aus:8.6::appstream", "cpe:/a:redhat:rhel_eus_long_life:8.6::appstream"], "vendor": "Red Hat", "product": "Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support", "versions": [{"status": "unaffected", "version": "0:1.12.0-6.el8_6.18", "lessThan": "*", "versionType": "rpm"}], "packageName": "tigervnc", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "defaultStatus": "affected"}, {"cpes": ["cpe:/a:redhat:rhel_aus:8.6::appstream", "cpe:/a:redhat:rhel_eus_long_life:8.6::appstream"], "vendor": "Red Hat", "product": "Red Hat Enterprise Linux 8.6 Extended Update Support Long-Life Add-On", "versions": [{"status": "unaffected", "version": "0:1.20.11-8.el8_6", "lessThan": "*", "versionType": "rpm"}], "packageName": "xorg-x11-server", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "defaultStatus": "affected"}, {"cpes": ["cpe:/a:redhat:rhel_aus:8.6::appstream", "cpe:/a:redhat:rhel_eus_long_life:8.6::appstream"], "vendor": "Red Hat", "product": "Red Hat Enterprise Linux 8.6 Extended Update Support Long-Life Add-On", "versions": [{"status": "unaffected", "version": "0:21.1.3-2.el8_6.7", "lessThan": "*", "versionType": "rpm"}], "packageName": "xorg-x11-server-Xwayland", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "defaultStatus": "affected"}, {"cpes": ["cpe:/a:redhat:rhel_aus:8.6::appstream", "cpe:/a:redhat:rhel_eus_long_life:8.6::appstream"], "vendor": "Red Hat", "product": "Red Hat Enterprise Linux 8.6 Extended Update Support Long-Life Add-On", "versions": [{"status": "unaffected", "version": "0:1.12.0-6.el8_6.18", "lessThan": "*", "versionType": "rpm"}], "packageName": "tigervnc", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "defaultStatus": "affected"}, {"cpes": ["cpe:/a:redhat:rhel_e4s:8.8::appstream", "cpe:/a:redhat:rhel_tus:8.8::appstream"], "vendor": "Red Hat", "product": "Red Hat Enterprise Linux 8.8 Telecommunications Update Service", "versions": [{"status": "unaffected", "version": "0:1.20.11-19.el8_8", "lessThan": "*", "versionType": "rpm"}], "packageName": "xorg-x11-server", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "defaultStatus": "affected"}, {"cpes": ["cpe:/a:redhat:rhel_e4s:8.8::appstream", "cpe:/a:redhat:rhel_tus:8.8::appstream"], "vendor": "Red Hat", "product": "Red Hat Enterprise Linux 8.8 Telecommunications Update Service", "versions": [{"status": "unaffected", "version": "0:21.1.3-13.el8_8.1", "lessThan": "*", "versionType": "rpm"}], "packageName": "xorg-x11-server-Xwayland", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "defaultStatus": "affected"}, {"cpes": ["cpe:/a:redhat:rhel_e4s:8.8::appstream", "cpe:/a:redhat:rhel_tus:8.8::appstream"], "vendor": "Red Hat", "product": "Red Hat Enterprise Linux 8.8 Telecommunications Update Service", "versions": [{"status": "unaffected", "version": "0:1.12.0-15.el8_8.18", "lessThan": "*", "versionType": "rpm"}], "packageName": "tigervnc", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "defaultStatus": "affected"}, {"cpes": ["cpe:/a:redhat:rhel_e4s:8.8::appstream", "cpe:/a:redhat:rhel_tus:8.8::appstream"], "vendor": "Red Hat", "product": "Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions", "versions": [{"status": "unaffected", "version": "0:1.20.11-19.el8_8", "lessThan": "*", "versionType": "rpm"}], "packageName": "xorg-x11-server", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "defaultStatus": "affected"}, {"cpes": ["cpe:/a:redhat:rhel_e4s:8.8::appstream", "cpe:/a:redhat:rhel_tus:8.8::appstream"], "vendor": "Red Hat", "product": "Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions", "versions": [{"status": "unaffected", "version": "0:21.1.3-13.el8_8.1", "lessThan": "*", "versionType": "rpm"}], "packageName": "xorg-x11-server-Xwayland", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "defaultStatus": "affected"}, {"cpes": ["cpe:/a:redhat:rhel_e4s:8.8::appstream", "cpe:/a:redhat:rhel_tus:8.8::appstream"], "vendor": "Red Hat", "product": "Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions", "versions": [{"status": "unaffected", "version": "0:1.12.0-15.el8_8.18", "lessThan": "*", "versionType": "rpm"}], "packageName": "tigervnc", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "defaultStatus": "affected"}, {"cpes": ["cpe:/a:redhat:enterprise_linux:9::appstream", "cpe:/a:redhat:enterprise_linux:9::crb"], "vendor": "Red Hat", "product": "Red Hat Enterprise Linux 9", "versions": [{"status": "unaffected", "version": "0:24.1.9-4.el9_8.2", "lessThan": "*", "versionType": "rpm"}], "packageName": "xorg-x11-server-Xwayland", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "defaultStatus": "affected"}, {"cpes": ["cpe:/a:redhat:enterprise_linux:9::appstream", "cpe:/a:redhat:enterprise_linux:9::crb"], "vendor": "Red Hat", "product": "Red Hat Enterprise Linux 9", "versions": [{"status": "unaffected", "version": "0:1.20.11-34.el9_8.2", "lessThan": "*", "versionType": "rpm"}], "packageName": "xorg-x11-server", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "defaultStatus": "affected"}, {"cpes": ["cpe:/a:redhat:enterprise_linux:9::appstream"], "vendor": "Red Hat", "product": "Red Hat Enterprise Linux 9", "versions": [{"status": "unaffected", "version": "0:1.15.0-7.el9_8.2", "lessThan": "*", "versionType": "rpm"}], "packageName": "tigervnc", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "defaultStatus": "affected"}, {"cpes": ["cpe:/a:redhat:rhel_e4s:9.2::appstream"], "vendor": "Red Hat", "product": "Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions", "versions": [{"status": "unaffected", "version": "0:1.20.11-21.el9_2", "lessThan": "*", "versionType": "rpm"}], "packageName": "xorg-x11-server", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "defaultStatus": "affected"}, {"cpes": ["cpe:/a:redhat:rhel_e4s:9.2::appstream"], "vendor": "Red Hat", "product": "Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions", "versions": [{"status": "unaffected", "version": "0:21.1.3-10.el9_2.1", "lessThan": "*", "versionType": "rpm"}], "packageName": "xorg-x11-server-Xwayland", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "defaultStatus": "affected"}, {"cpes": ["cpe:/a:redhat:rhel_e4s:9.2::appstream"], "vendor": "Red Hat", "product": "Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions", "versions": [{"status": "unaffected", "version": "0:1.12.0-14.el9_2.15", "lessThan": "*", "versionType": "rpm"}], "packageName": "tigervnc", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "defaultStatus": "affected"}, {"cpes": ["cpe:/a:redhat:rhel_e4s:9.4::appstream"], "vendor": "Red Hat", "product": "Red Hat Enterprise Linux 9.4 Update Services for SAP Solutions", "versions": [{"status": "unaffected", "version": "0:1.20.11-29.el9_4", "lessThan": "*", "versionType": "rpm"}], "packageName": "xorg-x11-server", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "defaultStatus": "affected"}, {"cpes": ["cpe:/a:redhat:rhel_e4s:9.4::appstream"], "vendor": "Red Hat", "product": "Red Hat Enterprise Linux 9.4 Update Services for SAP Solutions", "versions": [{"status": "unaffected", "version": "0:22.1.9-8.el9_4.1", "lessThan": "*", "versionType": "rpm"}], "packageName": "xorg-x11-server-Xwayland", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "defaultStatus": "affected"}, {"cpes": ["cpe:/a:redhat:rhel_e4s:9.4::appstream"], "vendor": "Red Hat", "product": "Red Hat Enterprise Linux 9.4 Update Services for SAP Solutions", "versions": [{"status": "unaffected", "version": "0:1.13.1-8.el9_4.10", "lessThan": "*", "versionType": "rpm"}], "packageName": "tigervnc", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "defaultStatus": "affected"}, {"cpes": ["cpe:/a:redhat:rhel_eus:9.6::appstream", "cpe:/a:redhat:rhel_eus:9.6::crb"], "vendor": "Red Hat", "product": "Red Hat Enterprise Linux 9.6 Extended Update Support", "versions": [{"status": "unaffected", "version": "0:1.20.11-34.el9_6", "lessThan": "*", "versionType": "rpm"}], "packageName": "xorg-x11-server", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "defaultStatus": "affected"}, {"cpes": ["cpe:/a:redhat:rhel_eus:9.6::appstream", "cpe:/a:redhat:rhel_eus:9.6::crb"], "vendor": "Red Hat", "product": "Red Hat Enterprise Linux 9.6 Extended Update Support", "versions": [{"status": "unaffected", "version": "0:23.2.7-6.el9_6.1", "lessThan": "*", "versionType": "rpm"}], "packageName": "xorg-x11-server-Xwayland", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "defaultStatus": "affected"}, {"cpes": ["cpe:/a:redhat:rhel_eus:9.6::appstream"], "vendor": "Red Hat", "product": "Red Hat Enterprise Linux 9.6 Extended Update Support", "versions": [{"status": "unaffected", "version": "0:1.14.1-11.el9_6", "lessThan": "*", "versionType": "rpm"}], "packageName": "tigervnc", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "defaultStatus": "affected"}, {"cpes": ["cpe:/o:redhat:rhel_els:6"], "vendor": "Red Hat", "product": "Red Hat Enterprise Linux 6", "packageName": "xorg-x11-server", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "defaultStatus": "unknown"}], "timeline": [{"lang": "en", "time": "2026-05-15T03:14:46.000Z", "value": "Reported to Red Hat."}, {"lang": "en", "time": "2026-06-02T00:00:00.000Z", "value": "Made public."}], "datePublic": "2026-06-02T00:00:00.000Z", "references": [{"url": "https://access.redhat.com/errata/RHSA-2026:26562", "name": "RHSA-2026:26562", "tags": ["vendor-advisory", "x_refsource_REDHAT"]}, {"url": "https://access.redhat.com/errata/RHSA-2026:26566", "name": "RHSA-2026:26566", "tags": ["vendor-advisory", "x_refsource_REDHAT"]}, {"url": "https://access.redhat.com/errata/RHSA-2026:26590", "name": "RHSA-2026:26590", "tags": ["vendor-advisory", "x_refsource_REDHAT"]}, {"url": "https://access.redhat.com/errata/RHSA-2026:26610", "name": "RHSA-2026:26610", "tags": ["vendor-advisory", "x_refsource_REDHAT"]}, {"url": "https://access.redhat.com/errata/RHSA-2026:26709", "name": "RHSA-2026:26709", "tags": ["vendor-advisory", "x_refsource_REDHAT"]}, {"url": "https://access.redhat.com/errata/RHSA-2026:28923", "name": "RHSA-2026:28923", "tags": ["vendor-advisory", "x_refsource_REDHAT"]}, {"url": "https://access.redhat.com/errata/RHSA-2026:29844", "name": "RHSA-2026:29844", "tags": ["vendor-advisory", "x_refsource_REDHAT"]}, {"url": "https://access.redhat.com/errata/RHSA-2026:36083", "name": "RHSA-2026:36083", "tags": ["vendor-advisory", "x_refsource_REDHAT"]}, {"url": "https://access.redhat.com/errata/RHSA-2026:36085", "name": "RHSA-2026:36085", "tags": ["vendor-advisory", "x_refsource_REDHAT"]}, {"url": "https://access.redhat.com/errata/RHSA-2026:36086", "name": "RHSA-2026:36086", "tags": ["vendor-advisory", "x_refsource_REDHAT"]}, {"url": "https://access.redhat.com/errata/RHSA-2026:36087", "name": "RHSA-2026:36087", "tags": ["vendor-advisory", "x_refsource_REDHAT"]}, {"url": "https://access.redhat.com/errata/RHSA-2026:36632", "name": "RHSA-2026:36632", "tags": ["vendor-advisory", "x_refsource_REDHAT"]}, {"url": "https://access.redhat.com/errata/RHSA-2026:36633", "name": "RHSA-2026:36633", "tags": ["vendor-advisory", "x_refsource_REDHAT"]}, {"url": "https://access.redhat.com/errata/RHSA-2026:36634", "name": "RHSA-2026:36634", "tags": ["vendor-advisory", "x_refsource_REDHAT"]}, {"url": "https://access.redhat.com/errata/RHSA-2026:36768", "name": "RHSA-2026:36768", "tags": ["vendor-advisory", "x_refsource_REDHAT"]}, {"url": "https://access.redhat.com/errata/RHSA-2026:36791", "name": "RHSA-2026:36791", "tags": ["vendor-advisory", "x_refsource_REDHAT"]}, {"url": "https://access.redhat.com/errata/RHSA-2026:36792", "name": "RHSA-2026:36792", "tags": ["vendor-advisory", "x_refsource_REDHAT"]}, {"url": "https://access.redhat.com/errata/RHSA-2026:36798", "name": "RHSA-2026:36798", "tags": ["vendor-advisory", "x_refsource_REDHAT"]}, {"url": "https://access.redhat.com/errata/RHSA-2026:38502", "name": "RHSA-2026:38502", "tags": ["vendor-advisory", "x_refsource_REDHAT"]}, {"url": "https://access.redhat.com/errata/RHSA-2026:38810", "name": "RHSA-2026:38810", "tags": ["vendor-advisory", "x_refsource_REDHAT"]}, {"url": "https://access.redhat.com/errata/RHSA-2026:46377", "name": "RHSA-2026:46377", "tags": ["vendor-advisory", "x_refsource_REDHAT"]}, {"url": "https://access.redhat.com/errata/RHSA-2026:46382", "name": "RHSA-2026:46382", "tags": ["vendor-advisory", "x_refsource_REDHAT"]}, {"url": "https://access.redhat.com/errata/RHSA-2026:46385", "name": "RHSA-2026:46385", "tags": ["vendor-advisory", "x_refsource_REDHAT"]}, {"url": "https://access.redhat.com/errata/RHSA-2026:46392", "name": "RHSA-2026:46392", "tags": ["vendor-advisory", "x_refsource_REDHAT"]}, {"url": "https://access.redhat.com/errata/RHSA-2026:46456", "name": "RHSA-2026:46456", "tags": ["vendor-advisory", "x_refsource_REDHAT"]}, {"url": "https://access.redhat.com/errata/RHSA-2026:46460", "name": "RHSA-2026:46460", "tags": ["vendor-advisory", "x_refsource_REDHAT"]}, {"url": "https://access.redhat.com/errata/RHSA-2026:46473", "name": "RHSA-2026:46473", "tags": ["vendor-advisory", "x_refsource_REDHAT"]}, {"url": "https://access.redhat.com/errata/RHSA-2026:49519", "name": "RHSA-2026:49519", "tags": ["vendor-advisory", "x_refsource_REDHAT"]}, {"url": "https://access.redhat.com/security/cve/CVE-2026-50261", "tags": ["vdb-entry", "x_refsource_REDHAT"]}, {"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2485386", "name": "RHBZ#2485386", "tags": ["issue-tracking", "x_refsource_REDHAT"]}, {"url": "https://gitlab.freedesktop.org/xorg/xserver/-/commit/bdd7bf57af208b1ddf57d4683d67104443b44812"}, {"url": "https://lists.x.org/archives/xorg-announce/2026-June/003702.html"}, {"url": "https://redhat.atlassian.net/browse/PSIRTSUPT-16950"}], "workarounds": [{"lang": "en", "value": "Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability."}], "x_generator": {"engine": "cvelib 1.8.0"}, "descriptions": [{"lang": "en", "value": "A use-after-free flaw was found in the X.Org X server and Xwayland in SyncChangeCounter(). A client that sets up multiple SyncCounters can trigger a use-after-free when destroying those counters via a second client connection while changing those counters. This may be used to crash the server, or for privilege escalation if the X server runs as root."}], "problemTypes": [{"descriptions": [{"lang": "en", "type": "CWE", "cweId": "CWE-416", "description": "Use After Free"}]}], "providerMetadata": {"orgId": "53f830b8-0a3f-465b-8143-3b8a9948e749", "shortName": "redhat", "dateUpdated": "2026-11-04T22:43:21.641Z"}, "x_redhatCweChain": "CWE-416: Use After Free"}}, "cveMetadata": {"cveId": "CVE-2026-50261", "state": "PUBLISHED", "dateUpdated": "2026-11-04T22:43:21.641Z", "dateReserved": "2026-06-04T14:55:24.012Z", "assignerOrgId": "53f830b8-0a3f-465b-8143-3b8a9948e749", "datePublished": "2026-06-05T10:36:33.418Z", "assignerShortName": "redhat"}, "dataVersion": "5.2"}

{"affected": [{"affectedData": [{"collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "cpes": ["cpe:/o:redhat:enterprise_linux:10.2"], "defaultStatus": "affected", "packageName": "xorg-x11-server-Xwayland", "product": "Red Hat Enterprise Linux 10", "vendor": "Red Hat", "versions": [{"lessThan": "*", "status": "unaffected", "version": "0:24.1.9-4.el10_2.2", "versionType": "rpm"}]}, {"collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "cpes": ["cpe:/o:redhat:enterprise_linux_eus:10.0"], "defaultStatus": "affected", "packageName": "xorg-x11-server-Xwayland", "product": "Red Hat Enterprise Linux 10.0 Extended Update Support", "vendor": "Red Hat", "versions": [{"lessThan": "*", "status": "unaffected", "version": "0:24.1.5-6.el10_0.1", "versionType": "rpm"}]}, {"collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "cpes": ["cpe:/o:redhat:rhel_els:6"], "defaultStatus": "affected", "packageName": "tigervnc", "product": "Red Hat Enterprise Linux 6 Extended Lifecycle Support - EXTENSION", "vendor": "Red Hat", "versions": [{"lessThan": "*", "status": "unaffected", "version": "0:1.1.0-25.el6_10.18", "versionType": "rpm"}]}, {"collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "cpes": ["cpe:/o:redhat:rhel_els:7"], "defaultStatus": "affected", "packageName": "xorg-x11-server", "product": "Red Hat Enterprise Linux 7 Extended Lifecycle Support", "vendor": "Red Hat", "versions": [{"lessThan": "*", "status": "unaffected", "version": "0:1.20.4-35.el7_9", "versionType": "rpm"}]}, {"collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "cpes": ["cpe:/o:redhat:rhel_els:7"], "defaultStatus": "affected", "packageName": "tigervnc", "product": "Red Hat Enterprise Linux 7 Extended Lifecycle Support", "vendor": "Red Hat", "versions": [{"lessThan": "*", "status": "unaffected", "version": "0:1.8.0-36.el7_9.5", "versionType": "rpm"}]}, {"collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "cpes": ["cpe:/a:redhat:enterprise_linux:8::appstream"], "defaultStatus": "affected", "packageName": "xorg-x11-server-Xwayland", "product": "Red Hat Enterprise Linux 8", "vendor": "Red Hat", "versions": [{"lessThan": "*", "status": "unaffected", "version": "0:21.1.3-20.el8_10.2", "versionType": "rpm"}]}, {"collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "cpes": ["cpe:/a:redhat:enterprise_linux:8::appstream", "cpe:/a:redhat:enterprise_linux:8::crb"], "defaultStatus": "affected", "packageName": "xorg-x11-server", "product": "Red Hat Enterprise Linux 8", "vendor": "Red Hat", "versions": [{"lessThan": "*", "status": "unaffected", "version": "0:1.20.11-28.el8_10.2", "versionType": "rpm"}]}, {"collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "cpes": ["cpe:/a:redhat:enterprise_linux:8::appstream"], "defaultStatus": "affected", "packageName": "tigervnc", "product": "Red Hat Enterprise Linux 8", "vendor": "Red Hat", "versions": [{"lessThan": "*", "status": "unaffected", "version": "0:1.15.0-10.el8_10", "versionType": "rpm"}]}, {"collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "cpes": ["cpe:/a:redhat:rhel_aus:8.4::appstream", "cpe:/a:redhat:rhel_eus_long_life:8.4::appstream"], "defaultStatus": "affected", "packageName": "xorg-x11-server", "product": "Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support", "vendor": "Red Hat", "versions": [{"lessThan": "*", "status": "unaffected", "version": "0:1.20.10-5.el8_4", "versionType": "rpm"}]}, {"collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "cpes": ["cpe:/a:redhat:rhel_aus:8.4::appstream", "cpe:/a:redhat:rhel_eus_long_life:8.4::appstream"], "defaultStatus": "affected", "packageName": "tigervnc", "product": "Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support", "vendor": "Red Hat", "versions": [{"lessThan": "*", "status": "unaffected", "version": "0:1.11.0-8.el8_4.16", "versionType": "rpm"}]}, {"collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "cpes": ["cpe:/a:redhat:rhel_aus:8.4::appstream", "cpe:/a:redhat:rhel_eus_long_life:8.4::appstream"], "defaultStatus": "affected", "packageName": "xorg-x11-server", "product": "Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On", "vendor": "Red Hat", "versions": [{"lessThan": "*", "status": "unaffected", "version": "0:1.20.10-5.el8_4", "versionType": "rpm"}]}, {"collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "cpes": ["cpe:/a:redhat:rhel_aus:8.4::appstream", "cpe:/a:redhat:rhel_eus_long_life:8.4::appstream"], "defaultStatus": "affected", "packageName": "tigervnc", "product": "Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On", "vendor": "Red Hat", "versions": [{"lessThan": "*", "status": "unaffected", "version": "0:1.11.0-8.el8_4.16", "versionType": "rpm"}]}, {"collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "cpes": ["cpe:/a:redhat:rhel_aus:8.6::appstream", "cpe:/a:redhat:rhel_eus_long_life:8.6::appstream"], "defaultStatus": "affected", "packageName": "xorg-x11-server", "product": "Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support", "vendor": "Red Hat", "versions": [{"lessThan": "*", "status": "unaffected", "version": "0:1.20.11-8.el8_6", "versionType": "rpm"}]}, {"collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "cpes": ["cpe:/a:redhat:rhel_aus:8.6::appstream", "cpe:/a:redhat:rhel_eus_long_life:8.6::appstream"], "defaultStatus": "affected", "packageName": "xorg-x11-server-Xwayland", "product": "Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support", "vendor": "Red Hat", "versions": [{"lessThan": "*", "status": "unaffected", "version": "0:21.1.3-2.el8_6.7", "versionType": "rpm"}]}, {"collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "cpes": ["cpe:/a:redhat:rhel_aus:8.6::appstream", "cpe:/a:redhat:rhel_eus_long_life:8.6::appstream"], "defaultStatus": "affected", "packageName": "tigervnc", "product": "Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support", "vendor": "Red Hat", "versions": [{"lessThan": "*", "status": "unaffected", "version": "0:1.12.0-6.el8_6.18", "versionType": "rpm"}]}, {"collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "cpes": ["cpe:/a:redhat:rhel_aus:8.6::appstream", "cpe:/a:redhat:rhel_eus_long_life:8.6::appstream"], "defaultStatus": "affected", "packageName": "xorg-x11-server", "product": "Red Hat Enterprise Linux 8.6 Extended Update Support Long-Life Add-On", "vendor": "Red Hat", "versions": [{"lessThan": "*", "status": "unaffected", "version": "0:1.20.11-8.el8_6", "versionType": "rpm"}]}, {"collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "cpes": ["cpe:/a:redhat:rhel_aus:8.6::appstream", "cpe:/a:redhat:rhel_eus_long_life:8.6::appstream"], "defaultStatus": "affected", "packageName": "xorg-x11-server-Xwayland", "product": "Red Hat Enterprise Linux 8.6 Extended Update Support Long-Life Add-On", "vendor": "Red Hat", "versions": [{"lessThan": "*", "status": "unaffected", "version": "0:21.1.3-2.el8_6.7", "versionType": "rpm"}]}, {"collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "cpes": ["cpe:/a:redhat:rhel_aus:8.6::appstream", "cpe:/a:redhat:rhel_eus_long_life:8.6::appstream"], "defaultStatus": "affected", "packageName": "tigervnc", "product": "Red Hat Enterprise Linux 8.6 Extended Update Support Long-Life Add-On", "vendor": "Red Hat", "versions": [{"lessThan": "*", "status": "unaffected", "version": "0:1.12.0-6.el8_6.18", "versionType": "rpm"}]}, {"collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "cpes": ["cpe:/a:redhat:rhel_e4s:8.8::appstream", "cpe:/a:redhat:rhel_tus:8.8::appstream"], "defaultStatus": "affected", "packageName": "xorg-x11-server", "product": "Red Hat Enterprise Linux 8.8 Telecommunications Update Service", "vendor": "Red Hat", "versions": [{"lessThan": "*", "status": "unaffected", "version": "0:1.20.11-19.el8_8", "versionType": "rpm"}]}, {"collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "cpes": ["cpe:/a:redhat:rhel_e4s:8.8::appstream", "cpe:/a:redhat:rhel_tus:8.8::appstream"], "defaultStatus": "affected", "packageName": "xorg-x11-server-Xwayland", "product": "Red Hat Enterprise Linux 8.8 Telecommunications Update Service", "vendor": "Red Hat", "versions": [{"lessThan": "*", "status": "unaffected", "version": "0:21.1.3-13.el8_8.1", "versionType": "rpm"}]}, {"collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "cpes": ["cpe:/a:redhat:rhel_e4s:8.8::appstream", "cpe:/a:redhat:rhel_tus:8.8::appstream"], "defaultStatus": "affected", "packageName": "tigervnc", "product": "Red Hat Enterprise Linux 8.8 Telecommunications Update Service", "vendor": "Red Hat", "versions": [{"lessThan": "*", "status": "unaffected", "version": "0:1.12.0-15.el8_8.18", "versionType": "rpm"}]}, {"collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "cpes": ["cpe:/a:redhat:rhel_e4s:8.8::appstream", "cpe:/a:redhat:rhel_tus:8.8::appstream"], "defaultStatus": "affected", "packageName": "xorg-x11-server", "product": "Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions", "vendor": "Red Hat", "versions": [{"lessThan": "*", "status": "unaffected", "version": "0:1.20.11-19.el8_8", "versionType": "rpm"}]}, {"collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "cpes": ["cpe:/a:redhat:rhel_e4s:8.8::appstream", "cpe:/a:redhat:rhel_tus:8.8::appstream"], "defaultStatus": "affected", "packageName": "xorg-x11-server-Xwayland", "product": "Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions", "vendor": "Red Hat", "versions": [{"lessThan": "*", "status": "unaffected", "version": "0:21.1.3-13.el8_8.1", "versionType": "rpm"}]}, {"collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "cpes": ["cpe:/a:redhat:rhel_e4s:8.8::appstream", "cpe:/a:redhat:rhel_tus:8.8::appstream"], "defaultStatus": "affected", "packageName": "tigervnc", "product": "Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions", "vendor": "Red Hat", "versions": [{"lessThan": "*", "status": "unaffected", "version": "0:1.12.0-15.el8_8.18", "versionType": "rpm"}]}, {"collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "cpes": ["cpe:/a:redhat:enterprise_linux:9::appstream", "cpe:/a:redhat:enterprise_linux:9::crb"], "defaultStatus": "affected", "packageName": "xorg-x11-server-Xwayland", "product": "Red Hat Enterprise Linux 9", "vendor": "Red Hat", "versions": [{"lessThan": "*", "status": "unaffected", "version": "0:24.1.9-4.el9_8.2", "versionType": "rpm"}]}, {"collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "cpes": ["cpe:/a:redhat:enterprise_linux:9::appstream", "cpe:/a:redhat:enterprise_linux:9::crb"], "defaultStatus": "affected", "packageName": "xorg-x11-server", "product": "Red Hat Enterprise Linux 9", "vendor": "Red Hat", "versions": [{"lessThan": "*", "status": "unaffected", "version": "0:1.20.11-34.el9_8.2", "versionType": "rpm"}]}, {"collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "cpes": ["cpe:/a:redhat:enterprise_linux:9::appstream"], "defaultStatus": "affected", "packageName": "tigervnc", "product": "Red Hat Enterprise Linux 9", "vendor": "Red Hat", "versions": [{"lessThan": "*", "status": "unaffected", "version": "0:1.15.0-7.el9_8.2", "versionType": "rpm"}]}, {"collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "cpes": ["cpe:/a:redhat:rhel_e4s:9.2::appstream"], "defaultStatus": "affected", "packageName": "xorg-x11-server", "product": "Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions", "vendor": "Red Hat", "versions": [{"lessThan": "*", "status": "unaffected", "version": "0:1.20.11-21.el9_2", "versionType": "rpm"}]}, {"collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "cpes": ["cpe:/a:redhat:rhel_e4s:9.2::appstream"], "defaultStatus": "affected", "packageName": "xorg-x11-server-Xwayland", "product": "Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions", "vendor": "Red Hat", "versions": [{"lessThan": "*", "status": "unaffected", "version": "0:21.1.3-10.el9_2.1", "versionType": "rpm"}]}, {"collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "cpes": ["cpe:/a:redhat:rhel_e4s:9.2::appstream"], "defaultStatus": "affected", "packageName": "tigervnc", "product": "Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions", "vendor": "Red Hat", "versions": [{"lessThan": "*", "status": "unaffected", "version": "0:1.12.0-14.el9_2.15", "versionType": "rpm"}]}, {"collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "cpes": ["cpe:/a:redhat:rhel_e4s:9.4::appstream"], "defaultStatus": "affected", "packageName": "xorg-x11-server", "product": "Red Hat Enterprise Linux 9.4 Update Services for SAP Solutions", "vendor": "Red Hat", "versions": [{"lessThan": "*", "status": "unaffected", "version": "0:1.20.11-29.el9_4", "versionType": "rpm"}]}, {"collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "cpes": ["cpe:/a:redhat:rhel_e4s:9.4::appstream"], "defaultStatus": "affected", "packageName": "xorg-x11-server-Xwayland", "product": "Red Hat Enterprise Linux 9.4 Update Services for SAP Solutions", "vendor": "Red Hat", "versions": [{"lessThan": "*", "status": "unaffected", "version": "0:22.1.9-8.el9_4.1", "versionType": "rpm"}]}, {"collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "cpes": ["cpe:/a:redhat:rhel_e4s:9.4::appstream"], "defaultStatus": "affected", "packageName": "tigervnc", "product": "Red Hat Enterprise Linux 9.4 Update Services for SAP Solutions", "vendor": "Red Hat", "versions": [{"lessThan": "*", "status": "unaffected", "version": "0:1.13.1-8.el9_4.10", "versionType": "rpm"}]}, {"collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "cpes": ["cpe:/a:redhat:rhel_eus:9.6::appstream", "cpe:/a:redhat:rhel_eus:9.6::crb"], "defaultStatus": "affected", "packageName": "xorg-x11-server", "product": "Red Hat Enterprise Linux 9.6 Extended Update Support", "vendor": "Red Hat", "versions": [{"lessThan": "*", "status": "unaffected", "version": "0:1.20.11-34.el9_6", "versionType": "rpm"}]}, {"collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "cpes": ["cpe:/a:redhat:rhel_eus:9.6::appstream", "cpe:/a:redhat:rhel_eus:9.6::crb"], "defaultStatus": "affected", "packageName": "xorg-x11-server-Xwayland", "product": "Red Hat Enterprise Linux 9.6 Extended Update Support", "vendor": "Red Hat", "versions": [{"lessThan": "*", "status": "unaffected", "version": "0:23.2.7-6.el9_6.1", "versionType": "rpm"}]}, {"collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "cpes": ["cpe:/a:redhat:rhel_eus:9.6::appstream"], "defaultStatus": "affected", "packageName": "tigervnc", "product": "Red Hat Enterprise Linux 9.6 Extended Update Support", "vendor": "Red Hat", "versions": [{"lessThan": "*", "status": "unaffected", "version": "0:1.14.1-11.el9_6", "versionType": "rpm"}]}, {"collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "cpes": ["cpe:/o:redhat:rhel_els:6"], "defaultStatus": "unknown", "packageName": "xorg-x11-server", "product": "Red Hat Enterprise Linux 6", "vendor": "Red Hat"}], "source": "secalert@redhat.com"}, {"affectedData": [{"collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "cpes": ["cpe:/o:redhat:enterprise_linux:10.2"], "defaultStatus": "affected", "packageName": "xorg-x11-server-Xwayland", "product": "Red Hat Enterprise Linux 10", "vendor": "Red Hat", "versions": [{"lessThan": "*", "status": "unaffected", "version": "0:24.1.9-4.el10_2.2", "versionType": "rpm"}]}, {"collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "cpes": ["cpe:/o:redhat:enterprise_linux_eus:10.0"], "defaultStatus": "affected", "packageName": "xorg-x11-server-Xwayland", "product": "Red Hat Enterprise Linux 10.0 Extended Update Support", "vendor": "Red Hat", "versions": [{"lessThan": "*", "status": "unaffected", "version": "0:24.1.5-6.el10_0.1", "versionType": "rpm"}]}, {"collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "cpes": ["cpe:/o:redhat:rhel_els:6"], "defaultStatus": "affected", "packageName": "tigervnc", "product": "Red Hat Enterprise Linux 6 Extended Lifecycle Support - EXTENSION", "vendor": "Red Hat", "versions": [{"lessThan": "*", "status": "unaffected", "version": "0:1.1.0-25.el6_10.18", "versionType": "rpm"}]}, {"collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "cpes": ["cpe:/o:redhat:rhel_els:7"], "defaultStatus": "affected", "packageName": "xorg-x11-server", "product": "Red Hat Enterprise Linux 7 Extended Lifecycle Support", "vendor": "Red Hat", "versions": [{"lessThan": "*", "status": "unaffected", "version": "0:1.20.4-35.el7_9", "versionType": "rpm"}]}, {"collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "cpes": ["cpe:/o:redhat:rhel_els:7"], "defaultStatus": "affected", "packageName": "tigervnc", "product": "Red Hat Enterprise Linux 7 Extended Lifecycle Support", "vendor": "Red Hat", "versions": [{"lessThan": "*", "status": "unaffected", "version": "0:1.8.0-36.el7_9.5", "versionType": "rpm"}]}, {"collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "cpes": ["cpe:/a:redhat:enterprise_linux:8"], "defaultStatus": "affected", "packageName": "xorg-x11-server-Xwayland", "product": "Red Hat Enterprise Linux 8", "vendor": "Red Hat", "versions": [{"lessThan": "*", "status": "unaffected", "version": "0:21.1.3-20.el8_10.2", "versionType": "rpm"}]}, {"collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "cpes": ["cpe:/a:redhat:enterprise_linux:8"], "defaultStatus": "affected", "packageName": "xorg-x11-server", "product": "Red Hat Enterprise Linux 8", "vendor": "Red Hat", "versions": [{"lessThan": "*", "status": "unaffected", "version": "0:1.20.11-28.el8_10.2", "versionType": "rpm"}]}, {"collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "cpes": ["cpe:/a:redhat:enterprise_linux:8"], "defaultStatus": "affected", "packageName": "tigervnc", "product": "Red Hat Enterprise Linux 8", "vendor": "Red Hat", "versions": [{"lessThan": "*", "status": "unaffected", "version": "0:1.15.0-10.el8_10", "versionType": "rpm"}]}, {"collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "cpes": ["cpe:/a:redhat:rhel_aus:8.4"], "defaultStatus": "affected", "packageName": "xorg-x11-server", "product": "Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support", "vendor": "Red Hat", "versions": [{"lessThan": "*", "status": "unaffected", "version": "0:1.20.10-5.el8_4", "versionType": "rpm"}]}, {"collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "cpes": ["cpe:/a:redhat:rhel_aus:8.4"], "defaultStatus": "affected", "packageName": "tigervnc", "product": "Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support", "vendor": "Red Hat", "versions": [{"lessThan": "*", "status": "unaffected", "version": "0:1.11.0-8.el8_4.16", "versionType": "rpm"}]}, {"collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "cpes": ["cpe:/a:redhat:rhel_eus_long_life:8.4"], "defaultStatus": "affected", "packageName": "xorg-x11-server", "product": "Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On", "vendor": "Red Hat", "versions": [{"lessThan": "*", "status": "unaffected", "version": "0:1.20.10-5.el8_4", "versionType": "rpm"}]}, {"collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "cpes": ["cpe:/a:redhat:rhel_eus_long_life:8.4"], "defaultStatus": "affected", "packageName": "tigervnc", "product": "Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On", "vendor": "Red Hat", "versions": [{"lessThan": "*", "status": "unaffected", "version": "0:1.11.0-8.el8_4.16", "versionType": "rpm"}]}, {"collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "cpes": ["cpe:/a:redhat:rhel_aus:8.6"], "defaultStatus": "affected", "packageName": "xorg-x11-server", "product": "Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support", "vendor": "Red Hat", "versions": [{"lessThan": "*", "status": "unaffected", "version": "0:1.20.11-8.el8_6", "versionType": "rpm"}]}, {"collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "cpes": ["cpe:/a:redhat:rhel_aus:8.6"], "defaultStatus": "affected", "packageName": "xorg-x11-server-Xwayland", "product": "Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support", "vendor": "Red Hat", "versions": [{"lessThan": "*", "status": "unaffected", "version": "0:21.1.3-2.el8_6.7", "versionType": "rpm"}]}, {"collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "cpes": ["cpe:/a:redhat:rhel_aus:8.6"], "defaultStatus": "affected", "packageName": "tigervnc", "product": "Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support", "vendor": "Red Hat", "versions": [{"lessThan": "*", "status": "unaffected", "version": "0:1.12.0-6.el8_6.18", "versionType": "rpm"}]}, {"collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "cpes": ["cpe:/a:redhat:rhel_eus_long_life:8.6"], "defaultStatus": "affected", "packageName": "xorg-x11-server", "product": "Red Hat Enterprise Linux 8.6 Extended Update Support Long-Life Add-On", "vendor": "Red Hat", "versions": [{"lessThan": "*", "status": "unaffected", "version": "0:1.20.11-8.el8_6", "versionType": "rpm"}]}, {"collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "cpes": ["cpe:/a:redhat:rhel_eus_long_life:8.6"], "defaultStatus": "affected", "packageName": "xorg-x11-server-Xwayland", "product": "Red Hat Enterprise Linux 8.6 Extended Update Support Long-Life Add-On", "vendor": "Red Hat", "versions": [{"lessThan": "*", "status": "unaffected", "version": "0:21.1.3-2.el8_6.7", "versionType": "rpm"}]}, {"collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "cpes": ["cpe:/a:redhat:rhel_eus_long_life:8.6"], "defaultStatus": "affected", "packageName": "tigervnc", "product": "Red Hat Enterprise Linux 8.6 Extended Update Support Long-Life Add-On", "vendor": "Red Hat", "versions": [{"lessThan": "*", "status": "unaffected", "version": "0:1.12.0-6.el8_6.18", "versionType": "rpm"}]}, {"collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "cpes": ["cpe:/a:redhat:rhel_tus:8.8"], "defaultStatus": "affected", "packageName": "xorg-x11-server", "product": "Red Hat Enterprise Linux 8.8 Telecommunications Update Service", "vendor": "Red Hat", "versions": [{"lessThan": "*", "status": "unaffected", "version": "0:1.20.11-19.el8_8", "versionType": "rpm"}]}, {"collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "cpes": ["cpe:/a:redhat:rhel_tus:8.8"], "defaultStatus": "affected", "packageName": "xorg-x11-server-Xwayland", "product": "Red Hat Enterprise Linux 8.8 Telecommunications Update Service", "vendor": "Red Hat", "versions": [{"lessThan": "*", "status": "unaffected", "version": "0:21.1.3-13.el8_8.1", "versionType": "rpm"}]}, {"collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "cpes": ["cpe:/a:redhat:rhel_tus:8.8"], "defaultStatus": "affected", "packageName": "tigervnc", "product": "Red Hat Enterprise Linux 8.8 Telecommunications Update Service", "vendor": "Red Hat", "versions": [{"lessThan": "*", "status": "unaffected", "version": "0:1.12.0-15.el8_8.18", "versionType": "rpm"}]}, {"collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "cpes": ["cpe:/a:redhat:rhel_e4s:8.8"], "defaultStatus": "affected", "packageName": "xorg-x11-server", "product": "Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions", "vendor": "Red Hat", "versions": [{"lessThan": "*", "status": "unaffected", "version": "0:1.20.11-19.el8_8", "versionType": "rpm"}]}, {"collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "cpes": ["cpe:/a:redhat:rhel_e4s:8.8"], "defaultStatus": "affected", "packageName": "xorg-x11-server-Xwayland", "product": "Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions", "vendor": "Red Hat", "versions": [{"lessThan": "*", "status": "unaffected", "version": "0:21.1.3-13.el8_8.1", "versionType": "rpm"}]}, {"collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "cpes": ["cpe:/a:redhat:rhel_e4s:8.8"], "defaultStatus": "affected", "packageName": "tigervnc", "product": "Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions", "vendor": "Red Hat", "versions": [{"lessThan": "*", "status": "unaffected", "version": "0:1.12.0-15.el8_8.18", "versionType": "rpm"}]}, {"collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "cpes": ["cpe:/a:redhat:enterprise_linux:9"], "defaultStatus": "affected", "packageName": "xorg-x11-server-Xwayland", "product": "Red Hat Enterprise Linux 9", "vendor": "Red Hat", "versions": [{"lessThan": "*", "status": "unaffected", "version": "0:24.1.9-4.el9_8.2", "versionType": "rpm"}]}, {"collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "cpes": ["cpe:/a:redhat:enterprise_linux:9"], "defaultStatus": "affected", "packageName": "xorg-x11-server", "product": "Red Hat Enterprise Linux 9", "vendor": "Red Hat", "versions": [{"lessThan": "*", "status": "unaffected", "version": "0:1.20.11-34.el9_8.2", "versionType": "rpm"}]}, {"collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "cpes": ["cpe:/a:redhat:enterprise_linux:9"], "defaultStatus": "affected", "packageName": "tigervnc", "product": "Red Hat Enterprise Linux 9", "vendor": "Red Hat", "versions": [{"lessThan": "*", "status": "unaffected", "version": "0:1.15.0-7.el9_8.2", "versionType": "rpm"}]}, {"collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "cpes": ["cpe:/a:redhat:rhel_e4s:9.2"], "defaultStatus": "affected", "packageName": "xorg-x11-server", "product": "Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions", "vendor": "Red Hat", "versions": [{"lessThan": "*", "status": "unaffected", "version": "0:1.20.11-21.el9_2", "versionType": "rpm"}]}, {"collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "cpes": ["cpe:/a:redhat:rhel_e4s:9.2"], "defaultStatus": "affected", "packageName": "xorg-x11-server-Xwayland", "product": "Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions", "vendor": "Red Hat", "versions": [{"lessThan": "*", "status": "unaffected", "version": "0:21.1.3-10.el9_2.1", "versionType": "rpm"}]}, {"collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "cpes": ["cpe:/a:redhat:rhel_e4s:9.2"], "defaultStatus": "affected", "packageName": "tigervnc", "product": "Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions", "vendor": "Red Hat", "versions": [{"lessThan": "*", "status": "unaffected", "version": "0:1.12.0-14.el9_2.15", "versionType": "rpm"}]}, {"collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "cpes": ["cpe:/a:redhat:rhel_e4s:9.4"], "defaultStatus": "affected", "packageName": "xorg-x11-server", "product": "Red Hat Enterprise Linux 9.4 Update Services for SAP Solutions", "vendor": "Red Hat", "versions": [{"lessThan": "*", "status": "unaffected", "version": "0:1.20.11-29.el9_4", "versionType": "rpm"}]}, {"collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "cpes": ["cpe:/a:redhat:rhel_e4s:9.4"], "defaultStatus": "affected", "packageName": "xorg-x11-server-Xwayland", "product": "Red Hat Enterprise Linux 9.4 Update Services for SAP Solutions", "vendor": "Red Hat", "versions": [{"lessThan": "*", "status": "unaffected", "version": "0:22.1.9-8.el9_4.1", "versionType": "rpm"}]}, {"collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "cpes": ["cpe:/a:redhat:rhel_e4s:9.4"], "defaultStatus": "affected", "packageName": "tigervnc", "product": "Red Hat Enterprise Linux 9.4 Update Services for SAP Solutions", "vendor": "Red Hat", "versions": [{"lessThan": "*", "status": "unaffected", "version": "0:1.13.1-8.el9_4.10", "versionType": "rpm"}]}, {"collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "cpes": ["cpe:/a:redhat:rhel_eus:9.6"], "defaultStatus": "affected", "packageName": "xorg-x11-server", "product": "Red Hat Enterprise Linux 9.6 Extended Update Support", "vendor": "Red Hat", "versions": [{"lessThan": "*", "status": "unaffected", "version": "0:1.20.11-34.el9_6", "versionType": "rpm"}]}, {"collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "cpes": ["cpe:/a:redhat:rhel_eus:9.6"], "defaultStatus": "affected", "packageName": "xorg-x11-server-Xwayland", "product": "Red Hat Enterprise Linux 9.6 Extended Update Support", "vendor": "Red Hat", "versions": [{"lessThan": "*", "status": "unaffected", "version": "0:23.2.7-6.el9_6.1", "versionType": "rpm"}]}, {"collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "cpes": ["cpe:/a:redhat:rhel_eus:9.6"], "defaultStatus": "affected", "packageName": "tigervnc", "product": "Red Hat Enterprise Linux 9.6 Extended Update Support", "vendor": "Red Hat", "versions": [{"lessThan": "*", "status": "unaffected", "version": "0:1.14.1-11.el9_6", "versionType": "rpm"}]}, {"collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "cpes": ["cpe:/o:redhat:enterprise_linux:6"], "defaultStatus": "unknown", "packageName": "xorg-x11-server", "product": "Red Hat Enterprise Linux 6", "vendor": "Red Hat"}], "source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:x.org:x_server:*:*:*:*:*:*:*:*", "matchCriteriaId": "2F16F762-98D6-437F-8771-0F6C70AF65FD", "versionEndExcluding": "21.1.23", "vulnerable": true}, {"criteria": "cpe:2.3:a:x.org:xwayland:*:*:*:*:*:*:*:*", "matchCriteriaId": "ED4EB1F5-9BBA-4751-9BC6-1639C7E02E0C", "versionEndExcluding": "24.1.12", "vulnerable": true}, {"criteria": "cpe:2.3:o:redhat:enterprise_linux:7.0:*:*:*:*:*:*:*", "matchCriteriaId": "142AD0DD-4CF3-4D74-9442-459CE3347E3A", "vulnerable": true}, {"criteria": "cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:*:*:*:*", "matchCriteriaId": "F4CFF558-3C47-480D-A2F0-BABF26042943", "vulnerable": true}, {"criteria": "cpe:2.3:o:redhat:enterprise_linux:9.0:*:*:*:*:*:*:*", "matchCriteriaId": "7F6FB57C-2BC7-487C-96DD-132683AEB35D", "vulnerable": true}, {"criteria": "cpe:2.3:o:redhat:enterprise_linux:10.0:*:*:*:*:*:*:*", "matchCriteriaId": "D65C2163-CFC2-4ABB-8F4E-CB09CEBD006C", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "A use-after-free flaw was found in the X.Org X server and Xwayland in SyncChangeCounter(). A client that sets up multiple SyncCounters can trigger a use-after-free when destroying those counters via a second client connection while changing those counters. This may be used to crash the server, or for privilege escalation if the X server runs as root."}], "id": "CVE-2026-50261", "lastModified": "2026-11-04T23:17:43.853", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 7.8, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 1.8, "impactScore": 5.9, "source": "secalert@redhat.com", "type": "Secondary"}, {"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 7.8, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 1.8, "impactScore": 5.9, "source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-50261", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "total"}], "role": "CISA Coordinator", "timestamp": "2026-06-05T00:00:00+00:00", "version": "2.0.3"}}]}, "published": "2026-06-05T12:16:39.617", "references": [{"source": "secalert@redhat.com", "url": "https://access.redhat.com/errata/RHSA-2026:26562"}, {"source": "secalert@redhat.com", "url": "https://access.redhat.com/errata/RHSA-2026:26566"}, {"source": "secalert@redhat.com", "url": "https://access.redhat.com/errata/RHSA-2026:26590"}, {"source": "secalert@redhat.com", "url": "https://access.redhat.com/errata/RHSA-2026:26610"}, {"source": "secalert@redhat.com", "url": "https://access.redhat.com/errata/RHSA-2026:26709"}, {"source": "secalert@redhat.com", "url": "https://access.redhat.com/errata/RHSA-2026:28923"}, {"source": "secalert@redhat.com", "url": "https://access.redhat.com/errata/RHSA-2026:29844"}, {"source": "secalert@redhat.com", "url": "https://access.redhat.com/errata/RHSA-2026:36083"}, {"source": "secalert@redhat.com", "url": "https://access.redhat.com/errata/RHSA-2026:36085"}, {"source": "secalert@redhat.com", "url": "https://access.redhat.com/errata/RHSA-2026:36086"}, {"source": "secalert@redhat.com", "url": "https://access.redhat.com/errata/RHSA-2026:36087"}, {"source": "secalert@redhat.com", "url": "https://access.redhat.com/errata/RHSA-2026:36632"}, {"source": "secalert@redhat.com", "url": "https://access.redhat.com/errata/RHSA-2026:36633"}, {"source": "secalert@redhat.com", "url": "https://access.redhat.com/errata/RHSA-2026:36634"}, {"source": "secalert@redhat.com", "url": "https://access.redhat.com/errata/RHSA-2026:36768"}, {"source": "secalert@redhat.com", "url": "https://access.redhat.com/errata/RHSA-2026:36791"}, {"source": "secalert@redhat.com", "url": "https://access.redhat.com/errata/RHSA-2026:36792"}, {"source": "secalert@redhat.com", "url": "https://access.redhat.com/errata/RHSA-2026:36798"}, {"source": "secalert@redhat.com", "url": "https://access.redhat.com/errata/RHSA-2026:38502"}, {"source": "secalert@redhat.com", "url": "https://access.redhat.com/errata/RHSA-2026:38810"}, {"source": "secalert@redhat.com", "url": "https://access.redhat.com/errata/RHSA-2026:46377"}, {"source": "secalert@redhat.com", "url": "https://access.redhat.com/errata/RHSA-2026:46382"}, {"source": "secalert@redhat.com", "url": "https://access.redhat.com/errata/RHSA-2026:46385"}, {"source": "secalert@redhat.com", "url": "https://access.redhat.com/errata/RHSA-2026:46392"}, {"source": "secalert@redhat.com", "url": "https://access.redhat.com/errata/RHSA-2026:46456"}, {"source": "secalert@redhat.com", "url": "https://access.redhat.com/errata/RHSA-2026:46460"}, {"source": "secalert@redhat.com", "url": "https://access.redhat.com/errata/RHSA-2026:46473"}, {"source": "secalert@redhat.com", "url": "https://access.redhat.com/errata/RHSA-2026:49519"}, {"source": "secalert@redhat.com", "tags": ["Third Party Advisory"], "url": "https://access.redhat.com/security/cve/CVE-2026-50261"}, {"source": "secalert@redhat.com", "tags": ["Issue Tracking", "Third Party Advisory"], "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2485386"}, {"source": "secalert@redhat.com", "tags": ["Patch"], "url": "https://gitlab.freedesktop.org/xorg/xserver/-/commit/bdd7bf57af208b1ddf57d4683d67104443b44812"}, {"source": "secalert@redhat.com", "tags": ["Mailing List", "Vendor Advisory"], "url": "https://lists.x.org/archives/xorg-announce/2026-June/003702.html"}, {"source": "secalert@redhat.com", "tags": ["Permissions Required"], "url": "https://redhat.atlassian.net/browse/PSIRTSUPT-16950"}, {"source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c", "url": "https://access.redhat.com/errata/RHSA-2026:26562"}, {"source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c", "url": "https://access.redhat.com/errata/RHSA-2026:26566"}, {"source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c", "url": "https://access.redhat.com/errata/RHSA-2026:26590"}, {"source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c", "url": "https://access.redhat.com/errata/RHSA-2026:26610"}, {"source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c", "url": "https://access.redhat.com/errata/RHSA-2026:26709"}, {"source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c", "url": "https://access.redhat.com/errata/RHSA-2026:28923"}, {"source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c", "url": "https://access.redhat.com/errata/RHSA-2026:29844"}, {"source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c", "url": "https://access.redhat.com/errata/RHSA-2026:36083"}, {"source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c", "url": "https://access.redhat.com/errata/RHSA-2026:36085"}, {"source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c", "url": "https://access.redhat.com/errata/RHSA-2026:36086"}, {"source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c", "url": "https://access.redhat.com/errata/RHSA-2026:36087"}, {"source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c", "url": "https://access.redhat.com/errata/RHSA-2026:36632"}, {"source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c", "url": "https://access.redhat.com/errata/RHSA-2026:36633"}, {"source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c", "url": "https://access.redhat.com/errata/RHSA-2026:36634"}, {"source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c", "url": "https://access.redhat.com/errata/RHSA-2026:36768"}, {"source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c", "url": "https://access.redhat.com/errata/RHSA-2026:36791"}, {"source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c", "url": "https://access.redhat.com/errata/RHSA-2026:36792"}, {"source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c", "url": "https://access.redhat.com/errata/RHSA-2026:36798"}, {"source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c", "url": "https://access.redhat.com/errata/RHSA-2026:38502"}, {"source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c", "url": "https://access.redhat.com/errata/RHSA-2026:38810"}, {"source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c", "url": "https://access.redhat.com/errata/RHSA-2026:46377"}, {"source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c", "url": "https://access.redhat.com/errata/RHSA-2026:46382"}, {"source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c", "url": "https://access.redhat.com/errata/RHSA-2026:46385"}, {"source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c", "url": "https://access.redhat.com/errata/RHSA-2026:46392"}, {"source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c", "url": "https://access.redhat.com/errata/RHSA-2026:46456"}, {"source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c", "url": "https://access.redhat.com/errata/RHSA-2026:46460"}, {"source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c", "url": "https://access.redhat.com/errata/RHSA-2026:46473"}, {"source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c", "url": "https://access.redhat.com/errata/RHSA-2026:49519"}, {"source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c", "tags": ["Third Party Advisory"], "url": "https://access.redhat.com/security/cve/CVE-2026-50261"}, {"source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c", "tags": ["Issue Tracking", "Third Party Advisory"], "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2485386"}, {"source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c", "url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-50261.json"}], "sourceIdentifier": "secalert@redhat.com", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-416"}], "source": "secalert@redhat.com", "type": "Secondary"}, {"description": [{"lang": "en", "value": "CWE-416"}], "source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c", "type": "Secondary"}]}

{"acknowledgement": "Upstream acknowledges Anonymous (Trend Micro Zero Day Initiative) as the original reporter.", "bugzilla": {"description": "xorg-x11-server: xorg-x11-server-Xwayland: xorg-x11-server: use-after-free in SyncChangeCounter()", "id": "2485386", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2485386"}, "csaw": false, "cvss3": {"cvss3_base_score": "7.8", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "status": "draft"}, "cwe": "CWE-416", "details": ["A use-after-free flaw was found in the X.Org X server and Xwayland in SyncChangeCounter(). A client that sets up multiple SyncCounters can trigger a use-after-free when destroying those counters via a second client connection while changing those counters. This may be used to crash the server, or for privilege escalation if the X server runs as root."], "name": "CVE-2026-50261", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Affected", "impact": "important", "package_name": "xorg-x11-server-Xwayland", "product_name": "Red Hat Enterprise Linux 10"}, {"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Out of support scope", "impact": "important", "package_name": "xorg-x11-server", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Affected", "impact": "important", "package_name": "xorg-x11-server", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Affected", "impact": "important", "package_name": "xorg-x11-server", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Affected", "impact": "important", "package_name": "xorg-x11-server-Xwayland", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Affected", "impact": "important", "package_name": "xorg-x11-server", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Affected", "impact": "important", "package_name": "xorg-x11-server-Xwayland", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2026-06-02T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-50261\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-50261\nhttps://gitlab.freedesktop.org/xorg/xserver/-/commit/bdd7bf57af208b1ddf57d4683d67104443b44812\nhttps://lists.x.org/archives/xorg-announce/2026-June/003702.html\nhttps://redhat.atlassian.net/browse/PSIRTSUPT-16950"], "threat_severity": "Important"}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": null}], "enrichment": {"confidence": 100.0, "confidence_source": "manual", "scores": [{"score": 100.0, "source": "manual"}]}, "original": {"product": "Red Hat Enterprise Linux 10", "source": "cna", "vendor": "Red Hat"}, "product": "enterprise_linux", "vendor": "redhat"}, {"configurations": [{"platform": null, "status": "affected", "versions": null}], "product": "xorg-server", "vendor": "x.org"}], "created": "2026-06-05T12:30:40.752516+00:00", "updated": "2026-06-07T11:17:07.666036+00:00", "vendors": ["redhat", "redhat$PRODUCT$enterprise_linux", "x.org", "x.org$PRODUCT$xorg-server"]}