CVE-2026-63835

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

Description A memory leak occurs in the batman-adv module when a hard interface is disabled. While the worker is disabled via batadv hardif disable interface() and batadv v ogm iface disable(), and the aggr list is freed, the batadv v ogm send meshif() function can still queue new socket buffers (skbs) to the aggr list through batadv v ogm queue on if(). This happens until all cores no longer find the RCU protected list of hard interfaces. Consequently, these queued skbs are never consumed by batadv v ogm aggr work or freed, leading to a leak. To prevent this, batadv v ogm iface disable() must block batadv v ogm queue on if().

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