From 03f8fcae84efe5e5d65ba5319c16f346df1cd978 Mon Sep 17 00:00:00 2001
From: Ahsen Kamal <itsahsenkamal@gmail.com>
Date: Wed, 8 Mar 2023 22:53:11 +0530
Subject: [PATCH] fix null dereference of error

The Coverity scan CID 1506418 found the null pointer dereferencing

Signed-off-by: Ahsen Kamal <itsahsenkamal@gmail.com>
Reviewed-by: Jakub Jelen <jjelen@redhat.com>
(cherry picked from commit 6d3e7e1c44af425ef0934b0306c15ac6253d98e7)
---
 src/packet_cb.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/src/packet_cb.c b/src/packet_cb.c
index d294692e..9f226893 100644
--- a/src/packet_cb.c
+++ b/src/packet_cb.c
@@ -64,7 +64,9 @@ SSH_PACKET_CALLBACK(ssh_packet_disconnect_callback){
     SSH_STRING_FREE(error_s);
   }
 
-  session->peer_discon_msg = strdup(error);
+  if (error != NULL) {
+    session->peer_discon_msg = strdup(error);
+  }
 
   SSH_LOG(SSH_LOG_PACKET, "Received SSH_MSG_DISCONNECT %d:%s",
                           code, error != NULL ? error : "no error");