CVE-2026-46208

Summary

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.

Affected Software

VendorProductVersion RangeStatus
LinuxLinux33a3bb4a3345bb511f9c69c913da95d4693e2a4e < 5e7d0ac936354c36810e74ac3056b334ed1f4058affected
LinuxLinux33a3bb4a3345bb511f9c69c913da95d4693e2a4e < 268078acae72daa12b17b2b299701cb9924e469aaffected
LinuxLinux33a3bb4a3345bb511f9c69c913da95d4693e2a4e < 58943b7ea356294749dae3e75b96c0ee292c00beaffected
LinuxLinux33a3bb4a3345bb511f9c69c913da95d4693e2a4e < 79bc0eaeef2c5797317bf2da8e3159a74d62ec47affected
LinuxLinux33a3bb4a3345bb511f9c69c913da95d4693e2a4e < 26dfeee8db81354bfdade155f27f9e16510ad196affected
LinuxLinux33a3bb4a3345bb511f9c69c913da95d4693e2a4e < 03660dab86f93319178a24667f6998526dc4355daffected
LinuxLinux33a3bb4a3345bb511f9c69c913da95d4693e2a4e < 8634c1dbd73adb74d40533ebb7e914efb82e71fbaffected
LinuxLinux33a3bb4a3345bb511f9c69c913da95d4693e2a4e < 3d3cf6a7314aca4df0a6dde28ce784a2a30d0166affected
LinuxLinux4.8affected
LinuxLinux0 < 4.8unaffected
LinuxLinux5.10.259 <= 5.10.*unaffected
LinuxLinux5.15.210 <= 5.15.*unaffected
LinuxLinux6.1.176 <= 6.1.*unaffected
LinuxLinux6.6.140 <= 6.6.*unaffected
LinuxLinux6.12.90 <= 6.12.*unaffected
LinuxLinux6.18.32 <= 6.18.*unaffected
LinuxLinux7.0.9 <= 7.0.*unaffected
LinuxLinux7.1 <= *unaffected

Weaknesses

References