CVE-2026-62429

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-62429", "assignerOrgId": "23aa2041-22e1-471f-9209-9b7396fa234f", "state": "PUBLISHED", "assignerShortName": "XEN", "dateReserved": "2026-07-14T10:28:12.655Z", "datePublished": "2026-07-28T12:32:24.333Z", "dateUpdated": "2026-07-28T16:33:29.286Z"}, "containers": {"cna": {"title": "vNUMA domain cleanup may race other operations", "datePublic": "2026-07-28T12:00:00.000Z", "descriptions": [{"lang": "en", "value": "Accessing the vNUMA configuration data of a guest is still possible when\ndomain destruction has already started. The cleaning up of that\nconfiguration information is not synchronized with its retrieval by a\ndevice model controlling the guest."}], "impacts": [{"descriptions": [{"lang": "en", "value": "While Denial of Service (DoS) affecting the entire host and information\nleaks and are the prevailing effect, a device model stub domain or a\nde-privileged device model running in the control domain may also be\nable to elevate its privileges to that of the host."}]}], "affected": [{"defaultStatus": "unknown", "product": "Xen", "vendor": "Xen", "versions": [{"status": "unknown", "version": "consult Xen advisory XSA-502"}]}], "configurations": [{"lang": "en", "value": "All Xen versions from 4.5 onwards are vulnerable. Xen versions 4.4 and\nearlier are not vulnerable.\n\nOnly entities controlling guests (on x86: HVM guests) can leverage the\nvulnerability. These are device models running in either a stub domain or\nde-privileged in Dom0.\n\nOnly guests which have vNUMA enabled allow their controlling entities to\nleverage the vulnerability."}], "workarounds": [{"lang": "en", "value": "On x86, running only PV or PVH guests will avoid the vulnerability.\n\nNot enabling vNUMA for HVM guests will also avoid the vulnerability."}], "credits": [{"lang": "en", "type": "finder", "value": "This issue was discovered by Teddy Astie of Vates."}], "references": [{"url": "https://xenbits.xenproject.org/xsa/advisory-502.html"}], "providerMetadata": {"orgId": "23aa2041-22e1-471f-9209-9b7396fa234f", "shortName": "XEN", "dateUpdated": "2026-07-28T12:32:24.333Z"}}, "adp": [{"title": "CVE Program Container", "references": [{"url": "http://xenbits.xen.org/xsa/advisory-502.html"}, {"url": "http://www.openwall.com/lists/oss-security/2026/07/28/18"}], "providerMetadata": {"orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2026-07-28T16:33:29.286Z"}}, {"problemTypes": [{"descriptions": [{"type": "CWE", "cweId": "CWE-362", "lang": "en", "description": "CWE-362 Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')"}]}], "metrics": [{"cvssV3_1": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 6.5, "attackVector": "NETWORK", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "NONE", "privilegesRequired": "LOW", "confidentialityImpact": "HIGH"}}, {"other": {"type": "ssvc", "content": {"timestamp": "2026-07-28T14:56:13.716116Z", "id": "CVE-2026-62429", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "partial"}], "role": "CISA Coordinator", "version": "2.0.3"}}}], "title": "CISA ADP Vulnrichment", "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-07-28T15:51:45.362Z"}}]}}

{"dataType": "CVE_RECORD", "containers": {"adp": [{"title": "CVE Program Container", "references": [{"url": "http://xenbits.xen.org/xsa/advisory-502.html"}, {"url": "http://www.openwall.com/lists/oss-security/2026/07/28/18"}], "providerMetadata": {"orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2026-07-28T16:33:29.286Z"}}, {"title": "CISA ADP Vulnrichment", "metrics": [{"cvssV3_1": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 6.5, "attackVector": "NETWORK", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "NONE", "privilegesRequired": "LOW", "confidentialityImpact": "HIGH"}}, {"other": {"type": "ssvc", "content": {"id": "CVE-2026-62429", "role": "CISA Coordinator", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "partial"}], "version": "2.0.3", "timestamp": "2026-07-28T14:56:13.716116Z"}}}], "problemTypes": [{"descriptions": [{"lang": "en", "type": "CWE", "cweId": "CWE-362", "description": "CWE-362 Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')"}]}], "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-07-28T14:55:54.956Z"}}], "cna": {"title": "vNUMA domain cleanup may race other operations", "credits": [{"lang": "en", "type": "finder", "value": "This issue was discovered by Teddy Astie of Vates."}], "impacts": [{"descriptions": [{"lang": "en", "value": "While Denial of Service (DoS) affecting the entire host and information\nleaks and are the prevailing effect, a device model stub domain or a\nde-privileged device model running in the control domain may also be\nable to elevate its privileges to that of the host."}]}], "affected": [{"vendor": "Xen", "product": "Xen", "versions": [{"status": "unknown", "version": "consult Xen advisory XSA-502"}], "defaultStatus": "unknown"}], "datePublic": "2026-07-28T12:00:00.000Z", "references": [{"url": "https://xenbits.xenproject.org/xsa/advisory-502.html"}], "workarounds": [{"lang": "en", "value": "On x86, running only PV or PVH guests will avoid the vulnerability.\n\nNot enabling vNUMA for HVM guests will also avoid the vulnerability."}], "descriptions": [{"lang": "en", "value": "Accessing the vNUMA configuration data of a guest is still possible when\ndomain destruction has already started. The cleaning up of that\nconfiguration information is not synchronized with its retrieval by a\ndevice model controlling the guest."}], "configurations": [{"lang": "en", "value": "All Xen versions from 4.5 onwards are vulnerable. Xen versions 4.4 and\nearlier are not vulnerable.\n\nOnly entities controlling guests (on x86: HVM guests) can leverage the\nvulnerability. These are device models running in either a stub domain or\nde-privileged in Dom0.\n\nOnly guests which have vNUMA enabled allow their controlling entities to\nleverage the vulnerability."}], "providerMetadata": {"orgId": "23aa2041-22e1-471f-9209-9b7396fa234f", "shortName": "XEN", "dateUpdated": "2026-07-28T12:32:24.333Z"}}}, "cveMetadata": {"cveId": "CVE-2026-62429", "state": "PUBLISHED", "dateUpdated": "2026-07-28T16:33:29.286Z", "dateReserved": "2026-07-14T10:28:12.655Z", "assignerOrgId": "23aa2041-22e1-471f-9209-9b7396fa234f", "datePublished": "2026-07-28T12:32:24.333Z", "assignerShortName": "XEN"}, "dataVersion": "5.2"}

{"affected": [{"affectedData": [{"defaultStatus": "unknown", "product": "Xen", "vendor": "Xen", "versions": [{"status": "unknown", "version": "consult Xen advisory XSA-502"}]}], "source": "security@xen.org"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "Accessing the vNUMA configuration data of a guest is still possible when\ndomain destruction has already started. The cleaning up of that\nconfiguration information is not synchronized with its retrieval by a\ndevice model controlling the guest."}], "id": "CVE-2026-62429", "lastModified": "2026-07-28T17:16:54.440", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 6.5, "baseSeverity": "MEDIUM", "confidentialityImpact": "HIGH", "integrityImpact": "NONE", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N", "version": "3.1"}, "exploitabilityScore": 2.8, "impactScore": 3.6, "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-62429", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2026-07-28T14:56:13.716116Z", "version": "2.0.3"}}]}, "published": "2026-07-28T13:19:01.810", "references": [{"source": "security@xen.org", "url": "https://xenbits.xenproject.org/xsa/advisory-502.html"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "http://www.openwall.com/lists/oss-security/2026/07/28/18"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "http://xenbits.xen.org/xsa/advisory-502.html"}], "sourceIdentifier": "security@xen.org", "vulnStatus": "Deferred", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-362"}], "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary"}]}

{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "consult Xen advisory XSA-502"}}], "enrichment": {"confidence": 100.0, "confidence_source": "matching", "scores": [{"score": 100.0, "source": "matching"}]}, "original": {"product": "Xen", "source": "cna", "vendor": "Xen"}, "product": "xen", "vendor": "xen"}], "created": "2026-07-28T20:00:10.502076+00:00", "updated": "2026-08-04T13:00:11.585537+00:00", "vendors": ["xen", "xen$PRODUCT$xen"]}