CVE-2026-52981

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

Description An issue exists in the neigh xmit() function where the socket buffer (skb) is not properly released when no neighbor table is found. Specifically, if the function is called with an uninitialized neighbor table, such as NEIGH ND TABLE when IPv6 is disabled, it returns -EAFNOSUPPORT and bypasses the internal out kfree skb error path. Since the return value of neigh xmit() is ignored, this leads to an SKB leak, which is a failure to release memory allocated for network packets.

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