CVE-2025-68336

Name of the Vulnerable Software and Affected Versions Linux kernel versions prior to 6.1.111

Description The Linux kernel contains a data race condition within the do raw write lock function, specifically related to spinlock debugging. Kernel Concurrency Sanitizer (KCSAN) has identified a race condition where a write operation to a memory location occurs concurrently with a read operation from the same location. The issue stems from an incomplete fix in a previous commit (1a365e822372) that addressed similar data races, as the debug write lock before part of the function was not updated to use WRITE ONCE(). The functions involved are do raw write lock, raw write lock irq, debug write lock after, and debug write lock before.

Recommendations Update to Linux kernel version 6.1.111 or later.