Description (CNA)
In the Linux kernel, the following vulnerability has been resolved: audit: fix potential use-after-free in audit_del_rule() `audit_del_rule()` destroys `e->rule.exe` via `audit_remove_mark_rule()` before unlinking the rule from RCU-visible filter lists and waiting for a grace period. Concurrent readers in `audit_filter()` and `audit_filter_rules()` still dereference `e->rule.exe`, while the fsnotify mark can be freed on an independent lifetime path. This creates a use-after-free window during rule deletion. Fix this by unlinking the rule from the RCU-visible lists and invoking `synchronize_rcu()` before calling `audit_remove_mark_rule()` (and other rule removal helpers). This ensures that all existing RCU readers have exited the critical section before any underlying resources are destroyed.
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| Linux / Linux | affected 34d99af52ad40bd498ba66970579a5bc1fb1a3bc before 93616c567469510b7bba55b2674e0c4523fd7e64; affected 34d99af52ad40bd498ba66970579a5bc1fb1a3bc before 3f82927b399d7a276c0c12b6ff4424b747a0c9a7; affected 34d99af52ad40bd498ba66970579a5bc1fb1a3bc before 8ae135a8962be9d4e8a131eb18eb06cdf02a47ce; affected 34d99af52ad40bd498ba66970579a5bc1fb1a3bc before 45bf3df5b32e5a49953e7ceabc55f7dd85380e46; affected 34d99af52ad40bd498ba66970579a5bc1fb1a3bc before 78bde7e9bd36eaae1b8e8cfcd47f12a34f301dbf; affected 34d99af52ad40bd498ba66970579a5bc1fb1a3bc before cae0dfed5d307b240bff71c3cf206652d1b6f215; affected 34d99af52ad40bd498ba66970579a5bc1fb1a3bc before 5b8f46864f06d6dbacb7dcea52bc084dfd122638; affected 34d99af52ad40bd498ba66970579a5bc1fb1a3bc before 246df90b5f1a8a6e6abbd2f058b029558720adec |
| Linux / Linux | affected 4.3; unaffected 0 before 4.3; unaffected 5.10.265 through 5.10.*; unaffected 5.15.216 through 5.15.*; unaffected 6.1.183 through 6.1.*; unaffected 6.6.151 through 6.6.*; unaffected 6.12.103 through 6.12.*; unaffected 6.18.44 through 6.18.*; unaffected 7.1.8 through 7.1.*; unaffected 7.2 through * |
CWE
No CWE identifiers supplied.
References
- https://git.kernel.org/stable/c/93616c567469510b7bba55b2674e0c4523fd7e64
- https://git.kernel.org/stable/c/3f82927b399d7a276c0c12b6ff4424b747a0c9a7
- https://git.kernel.org/stable/c/8ae135a8962be9d4e8a131eb18eb06cdf02a47ce
- https://git.kernel.org/stable/c/45bf3df5b32e5a49953e7ceabc55f7dd85380e46
- https://git.kernel.org/stable/c/78bde7e9bd36eaae1b8e8cfcd47f12a34f301dbf
- https://git.kernel.org/stable/c/cae0dfed5d307b240bff71c3cf206652d1b6f215
- https://git.kernel.org/stable/c/5b8f46864f06d6dbacb7dcea52bc084dfd122638
- https://git.kernel.org/stable/c/246df90b5f1a8a6e6abbd2f058b029558720adec
ADP enrichment
No English description supplied.
No references supplied.