Race condition in Linux kernel mm

1) Race condition

EUVDB-ID: #VU91472

Risk: Low

CVSSv3.1: 7.7 [AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2024-27058

CWE-ID: CWE-362 - Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')

Exploit availability: No

Description

The vulnerability allows a local user to escalate privileges on the system.

The vulnerability exists due to a race condition within the shmem_free_file_info(), shmem_get_next_id(), shmem_acquire_dquot(), shmem_is_empty_dquot() and shmem_release_dquot() functions in mm/shmem_quota.c. A local user can escalate privileges on the system.

Mitigation

Install update from vendor's website.

Vulnerable software versions

Linux kernel: All versions

External links

http://git.kernel.org/stable/c/c7077f43f30d817d10a9f8245e51576ac114b2f0
http://git.kernel.org/stable/c/617d55b90e73c7b4aa2733ca6cc3f9b72d1124bb
http://git.kernel.org/stable/c/f82f184874d2761ebaa60dccf577921a0dbb3810
http://git.kernel.org/stable/c/0a69b6b3a026543bc215ccc866d0aea5579e6ce2

Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.