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.

A flaw was found in the Linux kernel's batman-adv module, which is responsible for managing mesh networks. When a mesh network is being shut down, the system fails to properly clear the active gateway information. This leaves outdated network configuration data, which can prevent the mesh network from being successfully re-established. The consequence is a disruption of network services, effectively a denial of service.

Red Hat Enterprise Linux 10 Not affected kernel Red Hat Enterprise Linux 6 Not affected kernel Red Hat Enterprise Linux 7 Not affected kernel Red Hat Enterprise Linux 7 Not affected kernel-rt Red Hat Enterprise Linux 8 Not affected kernel Red Hat Enterprise Linux 8 Not affected kernel-rt Red Hat Enterprise Linux 9 Not affected kernel Red Hat Enterprise Linux 9 Not affected kernel-rt https://www.cve.org/CVERecord?id=CVE-2026-52926 https://nvd.nist.gov/vuln/detail/CVE-2026-52926 https://lore.kernel.org/linux-cve-announce/2026062431-CVE-2026-52926-00d4@gregkh/T