SB2025100534 - Improper locking in Linux kernel cpufreq driver
Published: October 5, 2025 Updated: October 27, 2025
Security Bulletin ID
SB2025100534
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-2023-53563)
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to improper locking within the amd_pstate_ut_check_perf() and amd_pstate_ut_check_freq() functions in drivers/cpufreq/amd-pstate-ut.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/0f74f12ee042fd72e45f0e8700e063c84ef3883b
- https://git.kernel.org/stable/c/60dd283804479c4a52f995b713f448e2cd65b8c8
- https://git.kernel.org/stable/c/84857640c67405eed258c461b3ef909002f1e201
- https://git.kernel.org/stable/c/fcf78a17bbb94bebaa912f0460a1848f7d374c94
- https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.1.53