Description (CNA)
In the Linux kernel, the following vulnerability has been resolved: apparmor: replace recursive profile removal with iterative approach The profile removal code uses recursion when removing nested profiles, which can lead to kernel stack exhaustion and system crashes. Reproducer: $ pf='a'; for ((i=0; i<1024; i++)); do echo -e "profile $pf { \n }" | apparmor_parser -K -a; pf="$pf//x"; done $ echo -n a > /sys/kernel/security/apparmor/.remove Replace the recursive __aa_profile_list_release() approach with an iterative approach in __remove_profile(). The function repeatedly finds and removes leaf profiles until the entire subtree is removed, maintaining the same removal semantic without recursion.
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| Linux / Linux | affected c88d4c7b049e87998ac0a9f455aa545cc895ef92 before ea854f032190cc9f26dc4a0e727090c89e55e342; affected c88d4c7b049e87998ac0a9f455aa545cc895ef92 before 4fdc847b107321dec22bf8ecd6019b7af76d7886; affected c88d4c7b049e87998ac0a9f455aa545cc895ef92 before b36a04284d0208be94e5e401409caa00e2bf1be1; affected c88d4c7b049e87998ac0a9f455aa545cc895ef92 before 33959a491e9fd557abfa5fce5ae4637d400915d3; affected c88d4c7b049e87998ac0a9f455aa545cc895ef92 before 999bd704b0b641527a5ed46f0d969deff8cfa68b; affected c88d4c7b049e87998ac0a9f455aa545cc895ef92 before 7eade846e013cbe8d2dc4a484463aa19e6515c7f; affected c88d4c7b049e87998ac0a9f455aa545cc895ef92 before a6a941a1294ac5abe22053dc501d25aed96e48fe; affected c88d4c7b049e87998ac0a9f455aa545cc895ef92 before ab09264660f9de5d05d1ef4e225aa447c63a8747 |
| Linux / Linux | affected 2.6.36; unaffected 0 before 2.6.36; unaffected 5.10.253 through 5.10.*; unaffected 5.15.203 through 5.15.*; unaffected 6.1.169 through 6.1.*; unaffected 6.6.130 through 6.6.*; unaffected 6.12.77 through 6.12.*; unaffected 6.18.18 through 6.18.*; unaffected 6.19.8 through 6.19.*; unaffected 7.0 through * |
CWE
No CWE identifiers supplied.
References
- https://git.kernel.org/stable/c/ea854f032190cc9f26dc4a0e727090c89e55e342
- https://git.kernel.org/stable/c/4fdc847b107321dec22bf8ecd6019b7af76d7886
- https://git.kernel.org/stable/c/b36a04284d0208be94e5e401409caa00e2bf1be1
- https://git.kernel.org/stable/c/33959a491e9fd557abfa5fce5ae4637d400915d3
- https://git.kernel.org/stable/c/999bd704b0b641527a5ed46f0d969deff8cfa68b
- https://git.kernel.org/stable/c/7eade846e013cbe8d2dc4a484463aa19e6515c7f
- https://git.kernel.org/stable/c/a6a941a1294ac5abe22053dc501d25aed96e48fe
- https://git.kernel.org/stable/c/ab09264660f9de5d05d1ef4e225aa447c63a8747