batman-adv: tp_meter sessions leak during mesh teardown
CVE-2026-46208 Published on May 28, 2026
batman-adv: stop tp_meter sessions during mesh teardown
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.
Products Associated with CVE-2026-46208
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Affected Versions
Linux:- Version 33a3bb4a3345bb511f9c69c913da95d4693e2a4e and below 5e7d0ac936354c36810e74ac3056b334ed1f4058 is affected.
- Version 33a3bb4a3345bb511f9c69c913da95d4693e2a4e and below 268078acae72daa12b17b2b299701cb9924e469a is affected.
- Version 33a3bb4a3345bb511f9c69c913da95d4693e2a4e and below 58943b7ea356294749dae3e75b96c0ee292c00be is affected.
- Version 33a3bb4a3345bb511f9c69c913da95d4693e2a4e and below 79bc0eaeef2c5797317bf2da8e3159a74d62ec47 is affected.
- Version 33a3bb4a3345bb511f9c69c913da95d4693e2a4e and below 26dfeee8db81354bfdade155f27f9e16510ad196 is affected.
- Version 33a3bb4a3345bb511f9c69c913da95d4693e2a4e and below 03660dab86f93319178a24667f6998526dc4355d is affected.
- Version 33a3bb4a3345bb511f9c69c913da95d4693e2a4e and below 8634c1dbd73adb74d40533ebb7e914efb82e71fb is affected.
- Version 33a3bb4a3345bb511f9c69c913da95d4693e2a4e and below 3d3cf6a7314aca4df0a6dde28ce784a2a30d0166 is affected.
- Version 4.8 is affected.
- Before 4.8 is unaffected.
- Version 5.10.259, <= 5.10.* is unaffected.
- Version 5.15.210, <= 5.15.* is unaffected.
- Version 6.1.176, <= 6.1.* is unaffected.
- Version 6.6.140, <= 6.6.* is unaffected.
- Version 6.12.90, <= 6.12.* is unaffected.
- Version 6.18.32, <= 6.18.* is unaffected.
- Version 7.0.9, <= 7.0.* is unaffected.
- Version 7.1, <= * is unaffected.
Exploit Probability
EPSS (Exploit Prediction Scoring System) scores estimate the probability that a vulnerability will be exploited in the wild within the next 30 days. The percentile shows you how this score compares to all other vulnerabilities.