CVE-2026-43027 | Linux Kernel up to 6.19.11 netfilter nf_conntrack_helper_unregister use after free

A vulnerability classified as critical was found in Linux Kernel up to 6.19.11. The affected element is the function nf_conntrack_helper_unregister of the component netfilter. The manipulation results in use after free.

This vulnerability is identified as CVE-2026-43027. The attack can only be performed from the local network. There is not any exploit available.

Upgrading the affected component is advised.