diff --git a/net/tipc/socket.c b/net/tipc/socket.c
index e2f7c5d..d3227f2 100644
--- a/net/tipc/socket.c
+++ b/net/tipc/socket.c
@@ -355,6 +355,9 @@
 	else if (addr->addrtype != TIPC_ADDR_NAMESEQ)
 		return -EAFNOSUPPORT;
 
+	if (addr->addr.nameseq.type < TIPC_RESERVED_TYPES)
+		return -EACCES;
+
 	return (addr->scope > 0) ?
 		tipc_publish(portref, addr->scope, &addr->addr.nameseq) :
 		tipc_withdraw(portref, -addr->scope, &addr->addr.nameseq);