CVE-2026-23209 | Linux Kernel up to 6.18.9 macvlan_common_newlink use after free

February 14, 2026 Yanac

A vulnerability was found in Linux Kernel up to 6.18.9. It has been classified as critical. This affects the function macvlan_common_newlink. This manipulation causes use after free.

This vulnerability is tracked as CVE-2026-23209. The attack is only possible within the local network. No exploit exists.

Upgrading the affected component is recommended.VulDB Recent EntriesRead More