CVE-2026-64542 | Linux Kernel up to 6.12.96/6.18.39/7.1.4 IPv6 Neighbor Discovery net/ipv6/ndisc.c accept_untracked_na idev/cnf null pointer dereference

A vulnerability, which was classified as critical, was found in Linux Kernel up to 6.12.96/6.18.39/7.1.4. Affected is the function accept_untracked_na of the file net/ipv6/ndisc.c of the component IPv6 Neighbor Discovery. Executing a manipulation of the argument idev/cnf can lead to null pointer dereference.

This vulnerability is tracked as CVE-2026-64542. The attack can be launched remotely. No exploit exists.

You should upgrade the affected component.