From: djm <djm@openbsd.org>
Date: Wed, 21 Feb 2024 05:57:34 +0000 (+0000)
Subject: fix proxy multiplexing mode, broken when keystroke timing
X-Git-Url: http://artulab.com/gitweb/?a=commitdiff_plain;h=92a154c715fa58488d7d1f1539db9ee91b46587a;p=openbsd

fix proxy multiplexing mode, broken when keystroke timing
obfuscation was added. GHPR#463 from montag451
---

diff --git a/usr.bin/ssh/clientloop.c b/usr.bin/ssh/clientloop.c
index 6fa70cb7c33..31eaa9500f1 100644
--- a/usr.bin/ssh/clientloop.c
+++ b/usr.bin/ssh/clientloop.c
@@ -1,4 +1,4 @@
-/* $OpenBSD: clientloop.c,v 1.402 2023/11/24 00:31:30 dtucker Exp $ */
+/* $OpenBSD: clientloop.c,v 1.403 2024/02/21 05:57:34 djm Exp $ */
 /*
  * Author: Tatu Ylonen <ylo@cs.hut.fi>
  * Copyright (c) 1995 Tatu Ylonen <ylo@cs.hut.fi>, Espoo, Finland
@@ -508,7 +508,7 @@ send_chaff(struct ssh *ssh)
 {
 	int r;
 
-	if ((ssh->kex->flags & KEX_HAS_PING) == 0)
+	if (ssh->kex == NULL || (ssh->kex->flags & KEX_HAS_PING) == 0)
 		return 0;
 	/* XXX probabilistically send chaff? */
 	/*