SB20260325161 - Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition') in Linux kernel unix
Published: March 25, 2026
Security Bulletin ID
SB20260325161
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) Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition') (CVE-ID: CVE-2026-23302)
The vulnerability allows a local user to cause a denial of service.
The vulnerability exists due to a race condition in socket state handling when processing network operations. A local user can trigger concurrent access to socket state variables to cause a denial of service.
The issue arises from improper synchronization of sk->sk_data_ready and sk->sk_write_space pointers during concurrent access by multiple CPUs.
Remediation
Install update from vendor's website.