SB2024060366 - Improper locking in Linux kernel btrfs
Published: June 3, 2024 Updated: May 14, 2025
Security Bulletin ID
SB2024060366
CSH Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Local access
Highest impact
Denial of service
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 vulnerability.
1) Improper locking (CVE-ID: CVE-2024-27080)
CWE-ID: CWE-667 - Improper Locking
CVSSv4: 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
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to improper locking within the try_release_extent_state(), flush_fiemap_cache(), emit_fiemap_extent(), fiemap_search_slot(), fiemap_process_hole(), extent_fiemap(), i_size_read() and unlock_extent() functions in fs/btrfs/extent_io.c. A local user can perform a denial of service (DoS) attack.
Remediation
Install update from vendor's website.
References
- https://git.kernel.org/stable/c/49d640d2946c35a17b051d54171a032dd95b0f50
- https://git.kernel.org/stable/c/ced63fffd63072c0ca55d5a451010d71bf08c0b3
- https://git.kernel.org/stable/c/978b63f7464abcfd364a6c95f734282c50f3decf
- https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.6.26
- https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.8.2