Improper locking in Linux kernel btrfs

1) Improper locking

EUVDB-ID: #VU97537

Risk: Low

CVSSv4.0: 4.3 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2024-46734

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 skip_inode_logging() and btrfs_sync_file() functions in fs/btrfs/file.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

CPE2.3

• cpe:2.3:o:linux_foundation:linux_kernel:*:*:*:*:*:*:*:*

External links

https://git.kernel.org/stable/c/d116a0b0e02f395cedfb8c725bd67480aa7c428c
https://git.kernel.org/stable/c/cd3087582e4fa36e89be4e6f859e75a4400292b4
https://git.kernel.org/stable/c/7b5595f33c3c273613b590892a578d78186bb400
https://git.kernel.org/stable/c/01681aa609b5f110502f56c4e3b2938efcf4a5bc
https://git.kernel.org/stable/c/cd9253c23aedd61eb5ff11f37a36247cd46faf86

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.