CVE-2024-41012: Linux kernel · Use After Free
Source GCVE Database
Not known to be exploited · CVSS 6.3 Medium.
Data as of 29 Oct 2026, 22:52 UTC
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:HExploitation evidence
Disclosed: evidence found.
CVE published 23 Jul 2024
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors
A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 29 Oct 2026.
Description
In the Linux kernel, the following vulnerability has been resolved: filelock: Remove locks reliably when fcntl/close race is detected When fcntl_setlk() races with close(), it removes the created lock with do_lock_file_wait(). However, LSMs can allow the first do_lock_file_wait() that created the lock while denying the second do_lock_file_wait() that tries to remove the lock. Separately, posix_lock_file() could also fail to remove a lock due to GFP_KERNEL allocation failure (when splitting a range in the middle). After the bug has been triggered, use-after-free reads will occur in lock_get_status() when userspace reads /proc/locks. This can likely be used to read arbitrary kernel memory, but can't corrupt kernel memory. Fix it by calling locks_remove_posix() instead, which is designed to reliably get rid of POSIX locks associated with the given file and files_struct and is also used by filp_flush().
References
- nvd.nist.gov/vuln/detail/CVE-2024-41012 (opens in a new tab)
- git.kernel.org/stable/c/3cad1bc010416c6dd780643476bc59ed742436b9 (opens in a new tab)
- git.kernel.org/stable/c/52c87ab18c76c14d7209646ccb3283b3f5d87b22 (opens in a new tab)
- git.kernel.org/stable/c/5661b9c7ec189406c2dde00837aaa4672efb6240 (opens in a new tab)
- git.kernel.org/stable/c/5f5d0799eb0a01d550c21b7894e26b2d9db55763 (opens in a new tab)
- git.kernel.org/stable/c/b6d223942c34057fdfd8f149e763fa823731b224 (opens in a new tab)
- git.kernel.org/stable/c/d30ff33040834c3b9eee29740acd92f9c7ba2250 (opens in a new tab)
- git.kernel.org/stable/c/dc2ce1dfceaa0767211a9d963ddb029ab21c4235 (opens in a new tab)
- git.kernel.org/stable/c/ef8fc41cd6f95f9a4a3470f085aecf350569a0b3 (opens in a new tab)
- lists.debian.org/debian-lts-announce/2025/01/msg00001.html (opens in a new tab)