CVE-2026-46208

Description

In the Linux kernel, the following vulnerability has been resolved: batman-adv: stop tp_meter sessions during mesh teardown TP meter sessions remain linked on bat_priv->tp_list after the netlink request has already finished. When the mesh interface is removed, batadv_mesh_free() currently tears down the mesh without first draining these sessions. A running sender thread or a late incoming tp_meter packet can then keep processing against a mesh instance which is already shutting down. Synchronize tp_meter with the mesh lifetime by stopping all active sessions from batadv_mesh_free() and waiting for sender threads to exit before teardown continues.

References

• https://git.kernel.org/stable/c/03660dab86f93319178a24667f6998526dc4355d
• https://git.kernel.org/stable/c/26dfeee8db81354bfdade155f27f9e16510ad196
• https://git.kernel.org/stable/c/3d3cf6a7314aca4df0a6dde28ce784a2a30d0166
• https://git.kernel.org/stable/c/79bc0eaeef2c5797317bf2da8e3159a74d62ec47
• https://git.kernel.org/stable/c/8634c1dbd73adb74d40533ebb7e914efb82e71fb