batman-adv: stop tp_meter sessions during mesh teardown

Summary

CVECVE-2026-46208
StatePUBLISHED
AssignerLinux
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-05-28 10:16:36 UTC
Updated2026-05-28 13:44:01 UTC
DescriptionIn 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.

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Linux Linux affected 33a3bb4a3345bb511f9c69c913da95d4693e2a4e 79bc0eaeef2c5797317bf2da8e3159a74d62ec47 git Not specified
CNA Linux Linux affected 33a3bb4a3345bb511f9c69c913da95d4693e2a4e 26dfeee8db81354bfdade155f27f9e16510ad196 git Not specified
CNA Linux Linux affected 33a3bb4a3345bb511f9c69c913da95d4693e2a4e 03660dab86f93319178a24667f6998526dc4355d git Not specified
CNA Linux Linux affected 33a3bb4a3345bb511f9c69c913da95d4693e2a4e 8634c1dbd73adb74d40533ebb7e914efb82e71fb git Not specified
CNA Linux Linux affected 33a3bb4a3345bb511f9c69c913da95d4693e2a4e 3d3cf6a7314aca4df0a6dde28ce784a2a30d0166 git Not specified
CNA Linux Linux affected 4.8 Not specified
CNA Linux Linux unaffected 4.8 semver Not specified
CNA Linux Linux unaffected 6.6.140 6.6.* semver Not specified
CNA Linux Linux unaffected 6.12.90 6.12.* semver Not specified
CNA Linux Linux unaffected 6.18.32 6.18.* semver Not specified
CNA Linux Linux unaffected 7.0.9 7.0.* semver Not specified
CNA Linux Linux unaffected 7.1-rc4 * original_commit_for_fix Not specified

References

ReferenceSourceLinkTags
git.kernel.org/stable/c/3d3cf6a7314aca4df0a6dde28ce784a2a30d0166 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/79bc0eaeef2c5797317bf2da8e3159a74d62ec47 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/26dfeee8db81354bfdade155f27f9e16510ad196 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/03660dab86f93319178a24667f6998526dc4355d 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/8634c1dbd73adb74d40533ebb7e914efb82e71fb 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
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