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-rw-r--r--src/channels.c9
1 files changed, 9 insertions, 0 deletions
diff --git a/src/channels.c b/src/channels.c
index 103009a8..b26f6bd4 100644
--- a/src/channels.c
+++ b/src/channels.c
@@ -171,6 +171,15 @@ SSH_PACKET_CALLBACK(ssh_packet_channel_open_conf){
"Received a CHANNEL_OPEN_CONFIRMATION for channel %d:%d",
channel->local_channel,
channel->remote_channel);
+
+ if (channel->state != SSH_CHANNEL_STATE_OPENING) {
+ SSH_LOG(SSH_LOG_RARE,
+ "SSH2_MSG_CHANNEL_OPEN_CONFIRMATION received in incorrect "
+ "channel state %d",
+ channel->state);
+ goto error;
+ }
+
SSH_LOG(SSH_LOG_PROTOCOL,
"Remote window : %lu, maxpacket : %lu",
(long unsigned int) channel->remote_window,