Out-of-bounds access in Zephyr BR/EDR L2CAP configuration request handling via `uint16_t` length underflow
The Classic (BR/EDR) L2CAP signaling handlers l2cap_br_conf_req() and l2cap_br_conf_rsp() in subsys/bluetooth/host/classic/l2cap_br.c validated the minimum command size against buf->len (the bytes remaining in the whole…