CVE-2025-21970

CVE-2025-21970 affects the Linux kernel mlx5 bridge implementation (net/mlx5) where removing a LAG device from a bridge can crash the system. The root cause is a sequence where, during NETDEV_CHANGEUPPER, the driver checks mlx5_lag_is_shared_fdb and may call mlx5_esw_bridge_lag_rep_get() which re...