SB20251001178 - Improper locking in Linux kernel cgroup
Published: October 1, 2025 Updated: October 27, 2025
Security Bulletin ID
SB20251001178
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-2023-53522)
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to improper locking within the freezer_apply_state() and freezer_change_state() functions in kernel/cgroup/legacy_freezer.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/34fbb7b45bae20b551dda24337c7761ca13ce69d
- https://git.kernel.org/stable/c/3756171b97c307d9df8b8ded1d883eec30172085
- https://git.kernel.org/stable/c/57dcd64c7e036299ef526b400a8d12b8a2352f26
- https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.1.25
- https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.2.12
- https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.3