{"id":"CVE-2026-98862","published":"2026-10-18T16:17:40.677","lastModified":"2026-10-19T10:19:50.287","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.","cvssScore":null,"cvssSeverity":null,"cvssVector":null,"cwes":[],"vendors":[],"products":[],"references":[{"url":"https://git.kernel.org/stable/c/304960900991157e6883bdf0b39782b690545ee8","tags":[]},{"url":"https://git.kernel.org/stable/c/88633025f20ba9c32ccdb3efc86eafdf98cb825c","tags":[]},{"url":"https://git.kernel.org/stable/c/aa650d87a498844060eecb1d336f4d46f4d1b0b3","tags":[]},{"url":"https://git.kernel.org/stable/c/f2cc5462b78559c7628a9f8ac9a9592e7783183a","tags":[]}],"exploitRefs":[],"hasPoc":false,"ai":null}