CVE-2026-72421 | Linux Kernel up to 7.1.4 FIB fib_lookup unusual condition

A vulnerability, which was classified as problematic, was found in Linux Kernel up to 7.1.4. Affected by this vulnerability is the function fib_lookup of the component FIB. The manipulation results in improper check for unusual conditions.

This vulnerability is known as CVE-2026-72421. Attacking locally is a requirement. No exploit is available.

You should upgrade the affected component.