Improper locking in Linux kernel f2fs

1) Improper locking

EUVDB-ID: #VU92036

Risk: Low

CVSSv3.1: 4.8 [AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2024-26869

CWE-ID: CWE-667 - Improper Locking

Exploit availability: No

Description

The vulnerability allows a local user to perform a denial of service (DoS) attack.

The vulnerability exists due to improper locking within the f2fs_inplace_write_data() and f2fs_wait_on_block_writeback_range() functions in fs/f2fs/segment.c, within the do_checkpoint() function in fs/f2fs/checkpoint.c. A local user can perform a denial of service (DoS) attack.

Mitigation

Install update from vendor's website.

Vulnerable software versions

Linux kernel: All versions

External links

http://git.kernel.org/stable/c/c92f2927df860a60ba815d3ee610a944b92a8694
http://git.kernel.org/stable/c/77bfdb89cc222fc7bfe198eda77bdc427d5ac189
http://git.kernel.org/stable/c/04226d8e3c4028dc451e9d8777356ec0f7919253
http://git.kernel.org/stable/c/9f0c4a46be1fe9b97dbe66d49204c1371e3ece65

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.