SB20250916237 - Improper locking in Linux kernel rcu
Published: September 16, 2025
Security Bulletin ID
SB20250916237
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-2025-39745)
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to improper locking within the rcu_read_delay() and rcutorture_one_extend_check() functions in kernel/rcu/rcutorture.c. A local user can perform a denial of service (DoS) attack.
Remediation
Install update from vendor's website.