{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-89643", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-09-11T19:38:34.741Z", "datePublished": "2026-09-11T19:45:35.523Z", "dateUpdated": "2026-09-11T19:45:35.523Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-09-11T19:45:35.523Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\naudit: avoid dropping live tree ref on fsnotify rule autoremove\n\naudit_del_rule() is used for both netlink deletion templates and internal\nfsnotify autoremove. The former passes a parsed template which owns a\ntemporary tree reference; the latter passes the installed entry itself.\n\nThe unconditional audit_put_tree() at the end of audit_del_rule() assumes\nthe template case. For mixed AUDIT_DIR plus AUDIT_EXE rules, an fsnotify\nautoremove event therefore drops the installed rule's live tree reference.\nRepeating this across rules sharing the same tree can free the tree while\nanother rule still references it, and a later autoremove dereferences the\nfreed pathname while comparing rules.\n\nMove the temporary-tree put to audit_rule_change(), the caller that owns\ndeletion templates. Keep it in the AUDIT_DEL_RULE cleanup so both\nsuccessful deletion and -ENOENT still release the parser-owned tree.\n\n[PM: dropped unnecessary comment for line length reasons]"}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["kernel/auditfilter.c"], "versions": [{"version": "34d99af52ad40bd498ba66970579a5bc1fb1a3bc", "lessThan": "cf37b61b5420fd4600fe78cf8c24da6e4d9bfe28", "status": "affected", "versionType": "git"}, {"version": "34d99af52ad40bd498ba66970579a5bc1fb1a3bc", "lessThan": "636a99bab36ba27515363d325866c0273ac83b3e", "status": "affected", "versionType": "git"}, {"version": "34d99af52ad40bd498ba66970579a5bc1fb1a3bc", "lessThan": "583cf579b32d99e3fe4e9c8ecc4d852e3708fbec", "status": "affected", "versionType": "git"}, {"version": "34d99af52ad40bd498ba66970579a5bc1fb1a3bc", "lessThan": "783f0f0974c156aca630f4ffff248671082a098d", "status": "affected", "versionType": "git"}]}, {"product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["kernel/auditfilter.c"], "versions": [{"version": "4.3", "status": "affected"}, {"version": "0", "lessThan": "4.3", "status": "unaffected", "versionType": "semver"}, {"version": "6.12.109", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.18.50", "lessThanOrEqual": "6.18.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.2.4", "lessThanOrEqual": "7.2.*", "status": "unaffected", "versionType": "semver"}, {"version": "7.3-rc1", "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": "4.3", "versionEndExcluding": "6.12.109"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.3", "versionEndExcluding": "6.18.50"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.3", "versionEndExcluding": "7.2.4"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.3", "versionEndExcluding": "7.3-rc1"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/cf37b61b5420fd4600fe78cf8c24da6e4d9bfe28"}, {"url": "https://git.kernel.org/stable/c/636a99bab36ba27515363d325866c0273ac83b3e"}, {"url": "https://git.kernel.org/stable/c/583cf579b32d99e3fe4e9c8ecc4d852e3708fbec"}, {"url": "https://git.kernel.org/stable/c/783f0f0974c156aca630f4ffff248671082a098d"}], "title": "audit: avoid dropping live tree ref on fsnotify rule autoremove", "x_generator": {"engine": "bippy-1.2.0"}}}}

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{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "Linux", "programFiles": ["kernel/auditfilter.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"lessThan": "cf37b61b5420fd4600fe78cf8c24da6e4d9bfe28", "status": "affected", "version": "34d99af52ad40bd498ba66970579a5bc1fb1a3bc", "versionType": "git"}, {"lessThan": "636a99bab36ba27515363d325866c0273ac83b3e", "status": "affected", "version": "34d99af52ad40bd498ba66970579a5bc1fb1a3bc", "versionType": "git"}, {"lessThan": "583cf579b32d99e3fe4e9c8ecc4d852e3708fbec", "status": "affected", "version": "34d99af52ad40bd498ba66970579a5bc1fb1a3bc", "versionType": "git"}, {"lessThan": "783f0f0974c156aca630f4ffff248671082a098d", "status": "affected", "version": "34d99af52ad40bd498ba66970579a5bc1fb1a3bc", "versionType": "git"}]}, {"defaultStatus": "affected", "product": "Linux", "programFiles": ["kernel/auditfilter.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"status": "affected", "version": "4.3"}, {"lessThan": "4.3", "status": "unaffected", "version": "0", "versionType": "semver"}, {"lessThanOrEqual": "6.12.*", "status": "unaffected", "version": "6.12.109", "versionType": "semver"}, {"lessThanOrEqual": "6.18.*", "status": "unaffected", "version": "6.18.50", "versionType": "semver"}, {"lessThanOrEqual": "7.2.*", "status": "unaffected", "version": "7.2.4", "versionType": "semver"}, {"lessThanOrEqual": "*", "status": "unaffected", "version": "7.3-rc1", "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\naudit: avoid dropping live tree ref on fsnotify rule autoremove\n\naudit_del_rule() is used for both netlink deletion templates and internal\nfsnotify autoremove. The former passes a parsed template which owns a\ntemporary tree reference; the latter passes the installed entry itself.\n\nThe unconditional audit_put_tree() at the end of audit_del_rule() assumes\nthe template case. For mixed AUDIT_DIR plus AUDIT_EXE rules, an fsnotify\nautoremove event therefore drops the installed rule's live tree reference.\nRepeating this across rules sharing the same tree can free the tree while\nanother rule still references it, and a later autoremove dereferences the\nfreed pathname while comparing rules.\n\nMove the temporary-tree put to audit_rule_change(), the caller that owns\ndeletion templates. Keep it in the AUDIT_DEL_RULE cleanup so both\nsuccessful deletion and -ENOENT still release the parser-owned tree.\n\n[PM: dropped unnecessary comment for line length reasons]"}], "id": "CVE-2026-89643", "lastModified": "2026-09-11T20:19:50.090", "metrics": {}, "published": "2026-09-11T20:19:50.090", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/583cf579b32d99e3fe4e9c8ecc4d852e3708fbec"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/636a99bab36ba27515363d325866c0273ac83b3e"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/783f0f0974c156aca630f4ffff248671082a098d"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/cf37b61b5420fd4600fe78cf8c24da6e4d9bfe28"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Received"}

{"bugzilla": {"description": "kernel: Linux Kernel: Audit subsystem memory corruption via fsnotify rule autoremove", "id": "2532025", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2532025"}, "csaw": false, "cvss3": {"cvss3_base_score": "5.7", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:N/I:H/A:H", "status": "draft"}, "cwe": "CWE-825", "details": ["A flaw was found in the Linux kernel's audit subsystem. When `fsnotify` rules are automatically removed, the system incorrectly manages memory references, leading to a situation where freed memory can be accessed again. This memory corruption vulnerability could allow a local attacker to cause a system crash, leading to a denial of service."], "name": "CVE-2026-89643", "package_state": [{"cpe": "cpe:/a:redhat:openshift:4", "fix_state": "Fix deferred", "package_name": "openshift/ose-rhel-coreos-8", "product_name": "Red Hat OpenShift Container Platform 4"}, {"cpe": "cpe:/a:redhat:openshift:4", "fix_state": "Fix deferred", "package_name": "openshift/ose-rhel-coreos-9", "product_name": "Red Hat OpenShift Container Platform 4"}], "public_date": "2026-09-11T19:45:35Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-89643\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-89643\nhttps://git.kernel.org/stable/c/583cf579b32d99e3fe4e9c8ecc4d852e3708fbec\nhttps://git.kernel.org/stable/c/636a99bab36ba27515363d325866c0273ac83b3e\nhttps://git.kernel.org/stable/c/783f0f0974c156aca630f4ffff248671082a098d\nhttps://git.kernel.org/stable/c/cf37b61b5420fd4600fe78cf8c24da6e4d9bfe28"], "threat_severity": "Moderate"}

{}