CVE-2026-52993

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

Description A double-free flaw exists in the Transparent Inter-Process Communication (TIPC) module. The issue occurs within the tipc buf append() function when it incorrectly handles memory after a socket buffer (skb) reallocation. Specifically, tipc msg validate() may reallocate the skb it is validating and free the old one; if validation subsequently fails, the error handling path frees the original skb pointer again. This memory corruption can lead to system instability, denial of service, or potentially arbitrary code execution.

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