{"id":"CVE-2026-74512","title":"In the Linux kernel, the following vulnerability has been resolved:\n\naudit: fix potential use-after-free in audit_del_rule()\n\n`audit_del_rule()` destroys `e->rule.exe` via `audit_remove_mark_rule()`\nbefore unlinking the rule from RCU-vis…","summary":"In the Linux kernel, the following vulnerability has been resolved:\n\naudit: fix potential use-after-free in audit_del_rule()\n\n`audit_del_rule()` destroys `e->rule.exe` via `audit_remove_mark_rule()`\nbefore unlinking the rule from RCU-vis…","severity":"high","cvss":7.8,"cvssVector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","vendor":"Linux","product":"Linux","affected":["Linux >= 34d99af52ad40bd498ba66970579a5bc1fb1a3bc < 93616c567469510b7bba55b2674e0c4523fd7e64","Linux >= 34d99af52ad40bd498ba66970579a5bc1fb1a3bc < 3f82927b399d7a276c0c12b6ff4424b747a0c9a7","Linux >= 34d99af52ad40bd498ba66970579a5bc1fb1a3bc < 8ae135a8962be9d4e8a131eb18eb06cdf02a47ce","Linux >= 34d99af52ad40bd498ba66970579a5bc1fb1a3bc < 45bf3df5b32e5a49953e7ceabc55f7dd85380e46","Linux >= 34d99af52ad40bd498ba66970579a5bc1fb1a3bc < 78bde7e9bd36eaae1b8e8cfcd47f12a34f301dbf","Linux >= 34d99af52ad40bd498ba66970579a5bc1fb1a3bc < cae0dfed5d307b240bff71c3cf206652d1b6f215","Linux >= 34d99af52ad40bd498ba66970579a5bc1fb1a3bc < 5b8f46864f06d6dbacb7dcea52bc084dfd122638","Linux >= 34d99af52ad40bd498ba66970579a5bc1fb1a3bc < 246df90b5f1a8a6e6abbd2f058b029558720adec","Linux 4.3"],"published":"2026-08-15","updated":"2026-10-16","sourceUpdated":"2026-10-16T20:17:33.850","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-74512","references":[{"url":"https://git.kernel.org/stable/c/246df90b5f1a8a6e6abbd2f058b029558720adec","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/3f82927b399d7a276c0c12b6ff4424b747a0c9a7","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/45bf3df5b32e5a49953e7ceabc55f7dd85380e46","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/5b8f46864f06d6dbacb7dcea52bc084dfd122638","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/78bde7e9bd36eaae1b8e8cfcd47f12a34f301dbf","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/8ae135a8962be9d4e8a131eb18eb06cdf02a47ce","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/93616c567469510b7bba55b2674e0c4523fd7e64","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/cae0dfed5d307b240bff71c3cf206652d1b6f215","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"}],"tags":["nvd","cve.org"],"epss":0.00126,"epssPercentile":0.02241,"ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"total","timestamp":"2026-10-16T18:58:42.622737Z"},"ingestedAt":"2026-10-16T19:46:24.350Z","slug":"CVE-2026-74512","body":"## Overview\n\nIn the Linux kernel, the following vulnerability has been resolved:\n\naudit: fix potential use-after-free in audit_del_rule()\n\n`audit_del_rule()` destroys `e->rule.exe` via `audit_remove_mark_rule()`\nbefore unlinking the rule from RCU-visible filter lists and waiting for a\ngrace period. Concurrent readers in `audit_filter()` and\n`audit_filter_rules()` still dereference `e->rule.exe`, while the fsnotify\nmark can be freed on an independent lifetime path. This creates a\nuse-after-free window during rule deletion.\n\nFix this by unlinking the rule from the RCU-visible lists and invoking\n`synchronize_rcu()` before calling `audit_remove_mark_rule()` (and other\nrule removal helpers). This ensures that all existing RCU readers have\nexited the critical section before any underlying resources are destroyed.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"twilight","depthScore":43,"depthScoreParts":{"impact":42.9,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}