--- x/net/bluetooth/l2cap_core.c
+++ y/net/bluetooth/l2cap_core.c
@@ -6774,6 +6774,7 @@ static void l2cap_conless_channel(struct
 	bt_cb(skb)->l2cap.psm = psm;
 
 	if (!chan->ops->recv(chan, skb)) {
+		l2cap_chan_unlock(chan);
 		l2cap_chan_put(chan);
 		return;
 	}