CVE-2026-98327

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-98327", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-09-25T10:25:14.341Z", "datePublished": "2026-10-06T08:46:20.317Z", "dateUpdated": "2026-10-19T09:17:37.676Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-10-19T09:17:37.676Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: mac80211: mesh: reset the CSA state when leaving\n\nifmsh->csa is allocated in ieee80211_mesh_csa_beacon() and only freed\nin ieee80211_mesh_finish_csa(), i.e. when the channel switch completes.\nLeaving the mesh while a switch is still pending therefore leaks it.\n\nAdditionally, ifmsh->csa_role and ifmsh->chsw_ttl have their state leak\nin this case, so things can get mixed up in addition to the memory\nleak.\n\nRefactor the reset and call it in ieee80211_stop_mesh() to fix it all."}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["net/mac80211/mesh.c"], "versions": [{"version": "b8456a14e9d2770846fcf74de18ff95b676149a3", "lessThan": "aba8dfb45864441199748c33ce3c1c8ca121c8bd", "status": "affected", "versionType": "git"}, {"version": "b8456a14e9d2770846fcf74de18ff95b676149a3", "lessThan": "bd3b21145ae2e781daac1bbd19216a63ab4e0cbd", "status": "affected", "versionType": "git"}, {"version": "b8456a14e9d2770846fcf74de18ff95b676149a3", "lessThan": "ba5bf83a81e8832cb84bb3a2da67512f81f57a02", "status": "affected", "versionType": "git"}, {"version": "b8456a14e9d2770846fcf74de18ff95b676149a3", "lessThan": "860134b3af77970e006feab7e5decb8c84771c7f", "status": "affected", "versionType": "git"}]}, {"product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["net/mac80211/mesh.c"], "versions": [{"version": "3.13", "status": "affected"}, {"version": "0", "lessThan": "3.13", "status": "unaffected", "versionType": "semver"}, {"version": "6.12.112", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.18.54", "lessThanOrEqual": "6.18.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.2.8", "lessThanOrEqual": "7.2.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.3", "lessThanOrEqual": "*", "status": "unaffected", "versionType": "original_commit_for_fix"}]}], "cpeApplicability": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.13", "versionEndExcluding": "6.12.112"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.13", "versionEndExcluding": "6.18.54"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.13", "versionEndExcluding": "7.2.8"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.13", "versionEndExcluding": "7.3"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/aba8dfb45864441199748c33ce3c1c8ca121c8bd"}, {"url": "https://git.kernel.org/stable/c/bd3b21145ae2e781daac1bbd19216a63ab4e0cbd"}, {"url": "https://git.kernel.org/stable/c/ba5bf83a81e8832cb84bb3a2da67512f81f57a02"}, {"url": "https://git.kernel.org/stable/c/860134b3af77970e006feab7e5decb8c84771c7f"}], "title": "wifi: mac80211: mesh: reset the CSA state when leaving", "x_generator": {"engine": "bippy-1.2.0"}}}}

{}

{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "Linux", "programFiles": ["net/mac80211/mesh.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"lessThan": "aba8dfb45864441199748c33ce3c1c8ca121c8bd", "status": "affected", "version": "b8456a14e9d2770846fcf74de18ff95b676149a3", "versionType": "git"}, {"lessThan": "bd3b21145ae2e781daac1bbd19216a63ab4e0cbd", "status": "affected", "version": "b8456a14e9d2770846fcf74de18ff95b676149a3", "versionType": "git"}, {"lessThan": "ba5bf83a81e8832cb84bb3a2da67512f81f57a02", "status": "affected", "version": "b8456a14e9d2770846fcf74de18ff95b676149a3", "versionType": "git"}, {"lessThan": "860134b3af77970e006feab7e5decb8c84771c7f", "status": "affected", "version": "b8456a14e9d2770846fcf74de18ff95b676149a3", "versionType": "git"}]}, {"defaultStatus": "affected", "product": "Linux", "programFiles": ["net/mac80211/mesh.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"status": "affected", "version": "3.13"}, {"lessThan": "3.13", "status": "unaffected", "version": "0", "versionType": "semver"}, {"lessThanOrEqual": "6.12.*", "status": "unaffected", "version": "6.12.112", "versionType": "semver"}, {"lessThanOrEqual": "6.18.*", "status": "unaffected", "version": "6.18.54", "versionType": "semver"}, {"lessThanOrEqual": "7.2.*", "status": "unaffected", "version": "7.2.8", "versionType": "semver"}, {"lessThanOrEqual": "*", "status": "unaffected", "version": "7.3", "versionType": "original_commit_for_fix"}]}], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: mac80211: mesh: reset the CSA state when leaving\n\nifmsh->csa is allocated in ieee80211_mesh_csa_beacon() and only freed\nin ieee80211_mesh_finish_csa(), i.e. when the channel switch completes.\nLeaving the mesh while a switch is still pending therefore leaks it.\n\nAdditionally, ifmsh->csa_role and ifmsh->chsw_ttl have their state leak\nin this case, so things can get mixed up in addition to the memory\nleak.\n\nRefactor the reset and call it in ieee80211_stop_mesh() to fix it all."}], "id": "CVE-2026-98327", "lastModified": "2026-10-19T10:18:34.890", "metrics": {}, "published": "2026-10-06T09:18:24.980", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/860134b3af77970e006feab7e5decb8c84771c7f"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/aba8dfb45864441199748c33ce3c1c8ca121c8bd"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/ba5bf83a81e8832cb84bb3a2da67512f81f57a02"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/bd3b21145ae2e781daac1bbd19216a63ab4e0cbd"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Received"}

{"bugzilla": {"description": "kernel: wifi: mac80211: mesh: reset the CSA state when leaving", "id": "2546365", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2546365"}, "csaw": false, "cvss3": {"cvss3_base_score": "5.5", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "status": "draft"}, "cwe": "CWE-772", "details": ["In the Linux kernel, the following vulnerability has been resolved:\nwifi: mac80211: mesh: reset the CSA state when leaving\nifmsh->csa is allocated in ieee80211_mesh_csa_beacon() and only freed\nin ieee80211_mesh_finish_csa(), i.e. when the channel switch completes.\nLeaving the mesh while a switch is still pending therefore leaks it.\nAdditionally, ifmsh->csa_role and ifmsh->chsw_ttl have their state leak\nin this case, so things can get mixed up in addition to the memory\nleak.\nRefactor the reset and call it in ieee80211_stop_mesh() to fix it all.", "A flaw was found in the Linux kernel's mac80211 wireless mesh networking subsystem. When leaving or stopping a mesh network while a Channel Switch Announcement (CSA) is still pending, the kernel fails to reset the switch state and release allocated memory. A local privileged user could exploit this flaw to cause memory leaks and state inconsistency, potentially resulting in a Denial of Service (DoS)."], "name": "CVE-2026-98327", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 10"}, {"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/a:redhat:openshift:4", "fix_state": "Not affected", "package_name": "openshift/ose-rhel-coreos-8", "product_name": "Red Hat OpenShift Container Platform 4"}, {"cpe": "cpe:/a:redhat:openshift:4", "fix_state": "Not affected", "package_name": "openshift/ose-rhel-coreos-9", "product_name": "Red Hat OpenShift Container Platform 4"}], "public_date": "2026-10-06T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-98327\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-98327\nhttps://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2026/CVE-2026-98327.mbox"], "threat_severity": "Moderate"}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[b8456a14e9d2770846fcf74de18ff95b676149a3,aba8dfb45864441199748c33ce3c1c8ca121c8bd)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[b8456a14e9d2770846fcf74de18ff95b676149a3,bd3b21145ae2e781daac1bbd19216a63ab4e0cbd)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[b8456a14e9d2770846fcf74de18ff95b676149a3,ba5bf83a81e8832cb84bb3a2da67512f81f57a02)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[b8456a14e9d2770846fcf74de18ff95b676149a3,860134b3af77970e006feab7e5decb8c84771c7f)"}}], "enrichment": {"confidence": 99.0, "confidence_source": "inferred", "scores": [{"score": 99.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "original": {"product": "Linux", "source": "cna", "vendor": "Linux"}, "product": "linux_kernel", "vendor": "linux"}, {"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "3.13"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[0,3.13)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.12.112,6.13.0]"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.18.54,6.19.0]"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[7.2.8,7.3.0]"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[7.3-rc4,*]"}}], "enrichment": {"confidence": 99.0, "confidence_source": "inferred", "scores": [{"score": 99.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "original": {"product": "Linux", "source": "cna", "vendor": "Linux"}, "product": "linux_kernel", "vendor": "linux"}], "created": "2026-10-06T13:45:18.455787+00:00", "updated": "2026-10-11T06:30:13.904252+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"]}