CVE-2025-37920

Name of the Vulnerable Software and Affected Versions Linux kernel (affected versions not specified)

Description A race condition in the AF XDP generic RX path of the Linux kernel has been resolved. The issue occurred when multiple sockets shared a single xsk buff pool, allowing two CPU cores to access the RX path of different sockets sharing the same umem, resulting in a race condition. To fix this, the rx lock was moved from xsk socket to xsk buff pool to protect both the RX and FILL queues by acquiring a spinlock in the shared xsk buff pool. This change minimizes lock contention and prevents data races or race conditions.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.