CVE-2026-23111 | Linux Kernel up to 5.15.199/6.1.162/6.6.123/6.12.69/6.18.9 nf_tables nft_map_catchall_activate reference count

A vulnerability, which was classified as critical, was found in Linux Kernel up to 5.15.199/6.1.162/6.6.123/6.12.69/6.18.9. Impacted is the function nft_map_catchall_activate of the component nf_tables. The manipulation results in improper update of reference count.

This vulnerability is known as CVE-2026-23111. Access to the local network is required for this attack. No exploit is available.

You should upgrade the affected component.