Race Condition in Linux Kernel's mlx5e Driver for Ethernet Devices

CVE-2026-64210

What is CVE-2026-64210?

A race condition vulnerability in the mlx5e driver of the Linux kernel could lead to unprotected writing sequences during the handling of ICOSQ interrupts. This condition arises when the driver's context switches between CPU affinities while still processing XSK tasks, resulting in potential data corruption or unexpected behavior. The issue was observed in live environments, generating warning messages related to incorrect operations in ICOSQ, emphasizing the necessity of robust locking mechanisms to prevent such race conditions effectively.

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