SB20251216132 - Improper locking in Linux kernel mm
Published: December 16, 2025
Security Bulletin ID
SB20251216132
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-2025-68211)
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to improper locking within the should_skip_rmap_item() and scan_get_next_rmap_item() functions in mm/ksm.c. A local user can perform a denial of service (DoS) attack.
Remediation
Install update from vendor's website.