SB2025100898 - Improper locking in Linux kernel rcu
Published: October 8, 2025 Updated: October 26, 2025
Security Bulletin ID
SB2025100898
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-2023-53671)
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to improper locking within the srcu_gp_start(), srcu_gp_end(), srcu_gp_start_if_needed() and srcu_barrier() functions in kernel/rcu/srcutree.c. A local user can perform a denial of service (DoS) attack.
Remediation
Install update from vendor's website.