CVE-2026-80983

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

Description A socket reference count leak exists in the smc switch conns() function. The issue occurs when the function takes a reference on the SMC socket but fails to call the corresponding sock put() during an early exit triggered by a failure in smc cdc get free slot(). This failure can happen if the target link goes down or the connection is killed during a link failover. A leaked sk refcnt prevents the smc sock from being destroyed, causing send and receive buffers to remain allocated and preventing the network namespace from being torn down.

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