SB20251230152 - Use-after-free in Linux kernel cifs
Published: December 30, 2025 Updated: December 31, 2025
Security Bulletin ID
SB20251230152
Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Local access
Highest impact
Code execution
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 security vulnerability.
1) Use-after-free (CVE-ID: CVE-2023-54280)
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to a use-after-free error within the target_share_matches_server() and __tree_connect_dfs_target() functions in fs/cifs/dfs.c. A local user can escalate privileges on the system.
Remediation
Install update from vendor's website.
References
- https://git.kernel.org/stable/c/536ec71ba060a02fabe8e22cecb82fe7b3a8708b
- https://git.kernel.org/stable/c/553476df55a111e6a66ad9155256aec0ec1b7ad0
- https://git.kernel.org/stable/c/ee20d7c6100752eaf2409d783f4f1449c29ea33d
- https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.2.15
- https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.3.2
- https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.4