SB20260424277 - Use-after-free in Linux kernel xfs
Published: April 24, 2026
Security Bulletin ID
SB20260424277
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) Use-after-free (CVE-ID: CVE-2026-31453)
CWE-ID: CWE-416 - Use After Free
CVSSv4: 6.8 [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]
The vulnerability allows a local user to cause a denial of service.
The vulnerability exists due to use-after-free in xfsaild_push_item tracepoint handling when processing log item push callbacks after the AIL lock is dropped. A local user can trigger background inode reclaim or dquot shrinker activity to cause a denial of service.
Remediation
Install update from vendor's website.
References
- https://git.kernel.org/stable/c/451c6329d9afa45862c36fe6677eb7750db60617
- https://git.kernel.org/stable/c/7121b22b0bac89394cc4c6a54b5aebc15347bdf5
- https://git.kernel.org/stable/c/79ef34ec0554ec04bdbafafbc9836423734e1bd6
- https://git.kernel.org/stable/c/95fb5d643cc70959baa54cd17f52f80ffc3295e7
- https://git.kernel.org/stable/c/c4d603e8e58a3bf35480135ccca2b4f7238abda5
- https://git.kernel.org/stable/c/c8a2ab339b88d10fc34a3318c92f07d8a467019d