CVE-2026-46238

In the Linux kernel, the following vulnerability has been resolved: batman-adv: stop caching unowned originator pointers in BAT IV BAT IV keeps the last-hop neighbor address in each neighnode, but some paths also cache an originator pointer derived from a temporary lookup. That pointer is not own...

CVE-2026-46238

CVE-2026-46238 affects the Linux kernel’s BAT IV implementation via the batman-adv subsystem. The issue stems from caching an auxiliary originator pointer derived from a temporary lookup in neigh_node state, where the pointer can be freed or become stale after purge handling. The documented fix i...