diff --git a/net/bridge/br_multicast.c b/net/bridge/br_multicast.c
index 12ce1ea..85ca985 100644
--- a/net/bridge/br_multicast.c
+++ b/net/bridge/br_multicast.c
@@ -899,6 +899,8 @@ static void br_multicast_leave_group(struct net_bridge *br,
 		goto out;
 
 	mdb = br->mdb;
+	if (!mdb)
+		goto out;
 	mp = br_mdb_ip_get(mdb, group);
 	if (!mp)
 		goto out;