author  Filip Januš (fjanus@redhat.com)
 date    29. 10. 2019


diff -ur yp-tools-4.2.3/src/yppasswd.c yp-tools-master/src/yppasswd.c
--- yp-tools-4.2.3/src/yppasswd.c	2018-03-27 15:47:48.000000000 +0200
+++ yp-tools-master/src/yppasswd.c	2019-10-29 12:00:29.000000000 +0100
@@ -281,6 +281,11 @@
   CLIENT *clnt;
 
   clnt = clnt_create (master, YPPROG, YPVERS, "udp");
+
+  /* clnt_create can return NULL in some cases */
+  if (clnt == NULL)
+	return NULL;
+
   clnt->cl_auth = authunix_create_default ();
 
   if (name == NULL)