SB2025012154 - Improper locking in Linux kernel sched
Published: January 21, 2025 Updated: May 11, 2025
Security Bulletin ID
SB2025012154
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-2025-21657)
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to improper locking within the scx_ops_bypass() function in kernel/sched/ext.c. A local user can perform a denial of service (DoS) attack.
Remediation
Install update from vendor's website.