SB20250227118 - Improper locking in Linux kernel time
Published: February 27, 2025 Updated: May 11, 2025
Security Bulletin ID
SB20250227118
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-2025-21767)
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to improper locking within the clocksource_verify_percpu() function in kernel/time/clocksource.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/0fb534187d2355f6c8f995321e76d1ccd1262ac1
- https://git.kernel.org/stable/c/6bb05a33337b2c842373857b63de5c9bf1ae2a09
- https://git.kernel.org/stable/c/852805b6cbdb69c298a8fc9fbe79994c95106e04
- https://git.kernel.org/stable/c/8783ceeee797d9aa9cfe150690fb9d0bac8cc459
- https://git.kernel.org/stable/c/cc3d79e7c806cb57d71c28a4a35e7d7fb3265faa
- https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.12.16