A vulnerability classified as critical was found in Linux Kernel up to 6.12.82/6.18.23/6.19.13 . Affected by this vulnerability is the function rtm_get_nexthop of the file net/ipv4/nexthop.c of the component ipv4 . Executing a manipulation can lead to allocation of resources. This vulnerability appears as CVE-2026-31531 . The attacker needs to be present on the local network. There is no available exploit. Upgrading the affected component is advised.