fix SEGV in UpdateHostkeys debug() message, triggered when the update

removed more host keys than remain present. Fix tested by reporter
James Cook, via bugs@

diff --git a/usr.bin/ssh/clientloop.c b/usr.bin/ssh/clientloop.c
index 33a43ba..2c97c86 100644 (file)
--- a/usr.bin/ssh/clientloop.c
+++ b/usr.bin/ssh/clientloop.c
@@ -1,4 +1,4 @@
-/* $OpenBSD: clientloop.c,v 1.363 2021/05/19 01:24:05 djm Exp $ */
+/* $OpenBSD: clientloop.c,v 1.364 2021/05/26 01:47:24 djm Exp $ */
 /*
  * Author: Tatu Ylonen <ylo@cs.hut.fi>
  * Copyright (c) 1995 Tatu Ylonen <ylo@cs.hut.fi>, Espoo, Finland
@@ -1938,7 +1938,7 @@ hostkeys_check_old(struct hostkey_foreach_line *l, void *_ctx)
                if (!sshkey_equal(l->key, ctx->old_keys[i]))
                        continue;
                debug3_f("found deprecated %s key at %s:%ld as %s",
-                   sshkey_ssh_name(ctx->keys[i]), l->path, l->linenum,
+                   sshkey_ssh_name(ctx->old_keys[i]), l->path, l->linenum,
                    hashed ? "[HASHED]" : l->hosts);
                ctx->old_key_seen = 1;
                break;