{"id":"CVE-2026-98862","state":"PUBLISHED","title":"audit: fix exe mark UAF in kill_rules()","description":"In the Linux kernel, the following vulnerability has been resolved:\n\naudit: fix exe mark UAF in kill_rules()\n\nkill_rules() removes mixed AUDIT_DIR and AUDIT_EXE rules when an audit\ntree is pruned. It drops entry->rule.exe before removing the rule from\nthe RCU-visible filter lists.\n\nAfter a rule has been installed with AUDIT_ADD_RULE, which requires\nCAP_AUDIT_CONTROL, removing the watched directory can race with another\ntask that is still evaluating the rule. In that case, fsnotify can free\nthe executable mark before the reader reaches audit_mark_compare(),\ncausing a use-after-free.\n\nKASAN reports:\n\n    BUG: KASAN: slab-use-after-free in audit_mark_compare+0x8d/0xa0\n\nUnlink the published rules from the RCU-visible lists and retain them\non tree->rules for cleanup. If any rule has an executable mark, wait for\na single RCU grace period before removing the marks and scheduling the\nentries for freeing. Otherwise, call_rcu() already provides the required\ndeferred freeing without a synchronous wait.","publishedAt":"2026-10-18T15:51:23.224Z","updatedAt":"2026-10-30T12:40:19.578Z","severity":null,"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"34d99af52ad40bd498ba66970579a5bc1fb1a3bc","status":"affected","lessThan":"8d9c97fb262067933ff4452db19e692d26622352","versionType":"git"},{"version":"34d99af52ad40bd498ba66970579a5bc1fb1a3bc","status":"affected","lessThan":"11715656540360906235d724fde5349631425073","versionType":"git"},{"version":"34d99af52ad40bd498ba66970579a5bc1fb1a3bc","status":"affected","lessThan":"0afb9202c1fb88387d0577524bf9785664bdd802","versionType":"git"},{"version":"34d99af52ad40bd498ba66970579a5bc1fb1a3bc","status":"affected","lessThan":"9aee3caeff4dd4126d84f67607b95cec8719b867","versionType":"git"},{"version":"34d99af52ad40bd498ba66970579a5bc1fb1a3bc","status":"affected","lessThan":"304960900991157e6883bdf0b39782b690545ee8","versionType":"git"},{"version":"34d99af52ad40bd498ba66970579a5bc1fb1a3bc","status":"affected","lessThan":"88633025f20ba9c32ccdb3efc86eafdf98cb825c","versionType":"git"},{"version":"34d99af52ad40bd498ba66970579a5bc1fb1a3bc","status":"affected","lessThan":"f2cc5462b78559c7628a9f8ac9a9592e7783183a","versionType":"git"},{"version":"34d99af52ad40bd498ba66970579a5bc1fb1a3bc","status":"affected","lessThan":"aa650d87a498844060eecb1d336f4d46f4d1b0b3","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["kernel/audit_tree.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"4.3","status":"affected"},{"version":"0","status":"unaffected","lessThan":"4.3","versionType":"semver"},{"version":"5.10.273","status":"unaffected","lessThanOrEqual":"5.10.*","versionType":"semver"},{"version":"5.15.224","status":"unaffected","lessThanOrEqual":"5.15.*","versionType":"semver"},{"version":"6.1.191","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.6.160","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.12.113","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.18.56","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"7.2.10","status":"unaffected","lessThanOrEqual":"7.2.*","versionType":"semver"},{"version":"7.3","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["kernel/audit_tree.c"]}],"references":["https://git.kernel.org/stable/c/8d9c97fb262067933ff4452db19e692d26622352","https://git.kernel.org/stable/c/11715656540360906235d724fde5349631425073","https://git.kernel.org/stable/c/0afb9202c1fb88387d0577524bf9785664bdd802","https://git.kernel.org/stable/c/9aee3caeff4dd4126d84f67607b95cec8719b867","https://git.kernel.org/stable/c/304960900991157e6883bdf0b39782b690545ee8","https://git.kernel.org/stable/c/88633025f20ba9c32ccdb3efc86eafdf98cb825c","https://git.kernel.org/stable/c/f2cc5462b78559c7628a9f8ac9a9592e7783183a","https://git.kernel.org/stable/c/aa650d87a498844060eecb1d336f4d46f4d1b0b3"],"weaknesses":[],"ingestedAt":"2026-10-30T13:00:06.648Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/98xxx/CVE-2026-98862.json","commit":"cb14bf1b43b0c9f05f7f40eae2246263fd430780","baselineCommit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-98862","state":"PUBLISHED","datePublished":"2026-10-18T15:51:23.224Z","dateUpdated":"2026-10-30T12:40:19.578Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2026-09-25T10:25:14.376Z"},"containers":{"cna":{"title":"audit: fix exe mark UAF in kill_rules()","descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\naudit: fix exe mark UAF in kill_rules()\n\nkill_rules() removes mixed AUDIT_DIR and AUDIT_EXE rules when an audit\ntree is pruned. It drops entry->rule.exe before removing the rule from\nthe RCU-visible filter lists.\n\nAfter a rule has been installed with AUDIT_ADD_RULE, which requires\nCAP_AUDIT_CONTROL, removing the watched directory can race with another\ntask that is still evaluating the rule. In that case, fsnotify can free\nthe executable mark before the reader reaches audit_mark_compare(),\ncausing a use-after-free.\n\nKASAN reports:\n\n    BUG: KASAN: slab-use-after-free in audit_mark_compare+0x8d/0xa0\n\nUnlink the published rules from the RCU-visible lists and retain them\non tree->rules for cleanup. If any rule has an executable mark, wait for\na single RCU grace period before removing the marks and scheduling the\nentries for freeing. Otherwise, call_rcu() already provides the required\ndeferred freeing without a synchronous wait."}],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"34d99af52ad40bd498ba66970579a5bc1fb1a3bc","status":"affected","lessThan":"8d9c97fb262067933ff4452db19e692d26622352","versionType":"git"},{"version":"34d99af52ad40bd498ba66970579a5bc1fb1a3bc","status":"affected","lessThan":"11715656540360906235d724fde5349631425073","versionType":"git"},{"version":"34d99af52ad40bd498ba66970579a5bc1fb1a3bc","status":"affected","lessThan":"0afb9202c1fb88387d0577524bf9785664bdd802","versionType":"git"},{"version":"34d99af52ad40bd498ba66970579a5bc1fb1a3bc","status":"affected","lessThan":"9aee3caeff4dd4126d84f67607b95cec8719b867","versionType":"git"},{"version":"34d99af52ad40bd498ba66970579a5bc1fb1a3bc","status":"affected","lessThan":"304960900991157e6883bdf0b39782b690545ee8","versionType":"git"},{"version":"34d99af52ad40bd498ba66970579a5bc1fb1a3bc","status":"affected","lessThan":"88633025f20ba9c32ccdb3efc86eafdf98cb825c","versionType":"git"},{"version":"34d99af52ad40bd498ba66970579a5bc1fb1a3bc","status":"affected","lessThan":"f2cc5462b78559c7628a9f8ac9a9592e7783183a","versionType":"git"},{"version":"34d99af52ad40bd498ba66970579a5bc1fb1a3bc","status":"affected","lessThan":"aa650d87a498844060eecb1d336f4d46f4d1b0b3","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["kernel/audit_tree.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"4.3","status":"affected"},{"version":"0","status":"unaffected","lessThan":"4.3","versionType":"semver"},{"version":"5.10.273","status":"unaffected","lessThanOrEqual":"5.10.*","versionType":"semver"},{"version":"5.15.224","status":"unaffected","lessThanOrEqual":"5.15.*","versionType":"semver"},{"version":"6.1.191","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.6.160","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.12.113","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.18.56","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"7.2.10","status":"unaffected","lessThanOrEqual":"7.2.*","versionType":"semver"},{"version":"7.3","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["kernel/audit_tree.c"]}],"references":[{"url":"https://git.kernel.org/stable/c/8d9c97fb262067933ff4452db19e692d26622352"},{"url":"https://git.kernel.org/stable/c/11715656540360906235d724fde5349631425073"},{"url":"https://git.kernel.org/stable/c/0afb9202c1fb88387d0577524bf9785664bdd802"},{"url":"https://git.kernel.org/stable/c/9aee3caeff4dd4126d84f67607b95cec8719b867"},{"url":"https://git.kernel.org/stable/c/304960900991157e6883bdf0b39782b690545ee8"},{"url":"https://git.kernel.org/stable/c/88633025f20ba9c32ccdb3efc86eafdf98cb825c"},{"url":"https://git.kernel.org/stable/c/f2cc5462b78559c7628a9f8ac9a9592e7783183a"},{"url":"https://git.kernel.org/stable/c/aa650d87a498844060eecb1d336f4d46f4d1b0b3"}],"providerMetadata":{"shortName":"Linux","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateUpdated":"2026-10-30T12:40:19.578Z"},"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.3","versionEndExcluding":"5.10.273"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.3","versionEndExcluding":"5.15.224"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.3","versionEndExcluding":"6.1.191"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.3","versionEndExcluding":"6.6.160"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.3","versionEndExcluding":"6.12.113"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.3","versionEndExcluding":"6.18.56"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.3","versionEndExcluding":"7.2.10"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.3","versionEndExcluding":"7.3"}]}]}],"x_generator":{"engine":"bippy-1.2.0"}}}}}