SB20251226234 - Improper locking in Linux kernel fs
Published: December 26, 2025 Updated: December 31, 2025
Security Bulletin ID
SB20251226234
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 security vulnerability.
1) Improper locking (CVE-ID: CVE-2023-54128)
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to improper locking within the do_mount_setattr() function in fs/namespace.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/0af8fae81d8b7f1beddc17c5d4cfa43235134648
- https://git.kernel.org/stable/c/65c324d3f35c05e37afec39ac80743583fdcc96c
- https://git.kernel.org/stable/c/cb2239c198ad9fbd5aced22cf93e45562da781eb
- https://git.kernel.org/stable/c/ddca03d97daa7b07b60c52e3d3060762732c6666
- https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.1.24