nat_traversal: check parameter for send_keepalive()

kamailio · Apr 8, 2021 · f33abd5 · f33abd5
1 parent c200d2e
commit f33abd5
Showing 1 changed file with 5 additions and 0 deletions.
diff --git a/src/modules/nat_traversal/nat_traversal.c b/src/modules/nat_traversal/nat_traversal.c
@@ -1554,6 +1554,11 @@ static void send_keepalive(NAT_Contact *contact)
 	unsigned short lport;
 	char lproto;
 
+	if(contact==NULL || contact->socket==NULL) {
+		LM_ERR("invalid parameters\n");
+		return;
+	}
+
 	if(keepalive_params.from == NULL) {
 		if(contact->socket != last_socket) {
 			memcpy(from_ip, contact->socket->address_str.s,