CVE-2026-46233

Name of the Vulnerable Software and Affected Versions Linux kernel (affected versions not specified)

Description An issue exists in the batman-adv module where the batadv bla purge claims() function traverses a hash list using an rcu read lock(). Due to potential parallel execution of batadv claim put(), the function may encounter a claim being released and freed by batadv claim release(). In such instances, backbone gw is set to NULL before the delayed RCU kfree begins. Consequently, calling the batadv bla claim get backbone gw() function can lead to a NULL-pointer dereference, which occurs when the system attempts to read a memory address that is null.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.