CVE-2026-64115

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

Description A use-after-free issue exists in the vsock/vmci component. The vmci transport recv connecting server() function incorrectly returns a success value when a peer sends a reset (RST) packet during the handshake. This causes vmci transport recv listen() to skip the vsock remove pending() function, leaving a socket in the listener's pending links with a state of TCP CLOSE. Subsequently, vsock pending work() performs a cleanup that results in multiple sock put(sk) calls; the first call frees the socket, and the second call attempts to write to the already freed object.

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