Gateway Management Flaw in Linux Kernel Affecting batman-adv

CVE-2026-52926

What is CVE-2026-52926?

A vulnerability in the batman-adv module of the Linux kernel can lead to improper management of gateway states during mesh teardown. The function responsible for removing gateway list entries fails to clear the currently selected gateway, resulting in residual stale states that can disrupt subsequent mesh recreations. This flaw necessitates careful attention during the cleanup process to ensure all references are dropped, thereby maintaining stable network operation.

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