CVE-2026-68137

A flaw was found in the Linux kernel's X.25 networking component. This vulnerability, a use-after-free, occurs in the x25_kill_by_neigh() function when a network socket is prematurely released while still being referenced. A local attacker could exploit this to cause system instability, leading to a denial of service, or potentially achieve arbitrary code execution.

This issue affects X.25 networking. x25_kill_by_neigh() can dereference sockets after dropping the list lock without pinning socket lifetime. Systems not using X.25 are not affected.

The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.