upstream: put back the mux_ctx memleak fix, but only for channels of

type SSH_CHANNEL_MUX_LISTENER; Specifically SSH_CHANNEL_MUX_PROXY channels
should not have this structure freed.

OpenBSD-Commit-ID: f3b213ae60405f77439e2b06262f054760c9d325

1 files changed, 5 insertions, 1 deletions

diff --git a/channels.c b/channels.c
index f23066dff..71c94f6cc 100644
--- a/channels.c
+++ b/channels.c
@@ -1,4 +1,4 @@
-/* $OpenBSD: channels.c,v 1.400 2020/07/03 07:17:35 djm Exp $ */
+/* $OpenBSD: channels.c,v 1.401 2020/07/03 07:25:18 djm Exp $ */
 /*
  * Author: Tatu Ylonen <ylo@cs.hut.fi>
  * Copyright (c) 1995 Tatu Ylonen <ylo@cs.hut.fi>, Espoo, Finland
@@ -603,6 +603,10 @@ channel_free(struct ssh *ssh, Channel *c)
 
         if (c->type == SSH_CHANNEL_MUX_CLIENT)
                 mux_remove_remote_forwardings(ssh, c);
+        else if (c->type == SSH_CHANNEL_MUX_LISTENER) {
+                free(c->mux_ctx);
+                c->mux_ctx = NULL;
+        }
 
         if (log_level_get() >= SYSLOG_LEVEL_DEBUG3) {
                 s = channel_open_message(ssh);