CVE-2026-52926
MediumCVSS 5.5Exploitation Probability (EPSS)
Low risk6th percentile — higher than 6% of all known CVEs
Summary
In the Linux kernel, the batman-adv module fails to clear the currently selected gateway pointer during mesh teardown, leaving stale state that can break subsequent mesh recreation.
Risk Assessment
The organization may face unpredictable mesh network behavior after restart, including incorrect routing or connection instability, affecting communication reliability.
Recommendation
Immediately update the Linux kernel to a version containing the fix (commit clearing gw.curr_gw during teardown). Monitor official security advisories from your distribution.
Original NVD description (English source)
In the Linux kernel, the following vulnerability has been resolved: batman-adv: clear current gateway during teardown batadv_gw_node_free() removes the gateway list entries during mesh teardown, but it does not clear the currently selected gateway. This leaves stale gateway state behind across cleanup and can break a later mesh recreation. Clear bat_priv->gw.curr_gw before walking the gateway list so the selected gateway reference is dropped as part of teardown.