Race Condition Vulnerability in Linux Kernel Affecting State Machine Operations

CVE-2026-46095

What is CVE-2026-46095?

A race condition vulnerability has been identified in the Linux Kernel related to the md/md-llbitmap module. This issue arises when the barrier raise operation is not correctly placed before transitioning the state machine in the llbitmap operation functions, specifically llbitmap_start_write() and llbitmap_start_discard(). The improper sequence can lead to state transitions occurring before the necessary barriers are enforced, potentially compromising system integrity and data safety. Operators and administrators are advised to apply the latest kernel patches to mitigate this issue and ensure robust system performance.

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