SB20251001111 - Incorrect calculation in Linux kernel btrfs
Published: October 1, 2025 Updated: October 27, 2025
Security Bulletin ID
SB20251001111
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) Incorrect calculation (CVE-ID: CVE-2022-50456)
CWE-ID: CWE-682 - Incorrect Calculation
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 incorrect calculation within the add_all_parents() function in fs/btrfs/backref.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/0061ab5153fb8bc574b44fbb773680d0ede48c9c
- https://git.kernel.org/stable/c/560840afc3e63bbe5d9c5ef6b2ecf8f3589adff6
- https://git.kernel.org/stable/c/645e2dac6e97f756f28a2f82b2e7bf7f29a68827
- https://git.kernel.org/stable/c/99590f29b2b7567fda2b503aa3d81a0d3e09dce5
- https://git.kernel.org/stable/c/a94b90ac1f251d1007c0c43ee289a61b50f2505f
- https://git.kernel.org/stable/c/c59ee1528b3432ec9dca220567f7eb507820917a
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.4.229