CyberRota Analysis
AI-GeneratedA vulnerability in the Linux kernel's batman-adv module can lead to a NULL pointer dereference when handling mesh interfaces, potentially causing system instability or crashes. This issue arises when a primary interface is decoupled from its mesh interface without proper locking, allowing for unsafe operations. Linux system administrators and developers utilizing the batman-adv module should prioritize applying patches to mitigate this risk.
Original NVD Description
In the Linux kernel, the following vulnerability has been resolved: batman-adv: bla: avoid NULL-ptr deref for claim via dropped interface Without rtnl_lock held, a hardif might be retrieved as primary interface of a meshif, but then (while operating on this interface) getting decoupled from the mesh interface. In this case, the meshif still exists but the pointer from the primary hardif to the meshif is set to NULL. The mesh_iface must be checked first to be non-NULL before continuing to send an ARP request using meshif.
Related CVEs
Other vulnerabilities affecting the same vendor(s)