===================================================================
RCS file: /cvsrepo/anoncvs/cvs/src/usr.bin/ssh/ssh-keygen.c,v
retrieving revision 1.447
retrieving revision 1.450
diff -u -r1.447 -r1.450
--- src/usr.bin/ssh/ssh-keygen.c	2022/01/05 21:54:37	1.447
+++ src/usr.bin/ssh/ssh-keygen.c	2022/03/18 02:32:22	1.450
@@ -1,4 +1,4 @@
-/* $OpenBSD: ssh-keygen.c,v 1.447 2022/01/05 21:54:37 djm Exp $ */
+/* $OpenBSD: ssh-keygen.c,v 1.450 2022/03/18 02:32:22 djm Exp $ */
 /*
  * Author: Tatu Ylonen <ylo@cs.hut.fi>
  * Copyright (c) 1994 Tatu Ylonen <ylo@cs.hut.fi>, Espoo, Finland
@@ -2437,7 +2437,7 @@
 {
 	size_t i, slen, plen = strlen(keypath);
 	char *privpath = xstrdup(keypath);
-	const char *suffixes[] = { "-cert.pub", ".pub", NULL };
+	static const char * const suffixes[] = { "-cert.pub", ".pub", NULL };
 	struct sshkey *ret = NULL, *privkey = NULL;
 	int r;
 
@@ -3512,6 +3512,13 @@
 			return sig_sign(identity_file, cert_principals,
 			    argc, argv, opts, nopts);
 		} else if (strncmp(sign_op, "check-novalidate", 16) == 0) {
+			/* NB. cert_principals is actually namespace, via -n */
+			if (cert_principals == NULL ||
+			    *cert_principals == '\0') {
+				error("Too few arguments for check-novalidate: "
+				    "missing namespace");
+				exit(1);
+			}
 			if (ca_key_path == NULL) {
 				error("Too few arguments for check-novalidate: "
 				    "missing signature file");