From d88cc720fb0a006f25748e1542634b4934071015 Mon Sep 17 00:00:00 2001
From: Andreas Schneider <asn@cryptomilk.org>
Date: Mon, 24 Apr 2017 13:27:20 +0200
Subject: [PATCH] messages: Do not leak memory if answeres had been allocated
 previously

Found by ozz-fuzz

BUG: https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=1222

Signed-off-by: Andreas Schneider <asn@cryptomilk.org>
(cherry picked from commit 5eb41492c452081b95eecad374a3ddef73cd384c)
---
 src/messages.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/src/messages.c b/src/messages.c
index 671a5c49..f93ae90b 100644
--- a/src/messages.c
+++ b/src/messages.c
@@ -964,6 +964,7 @@ SSH_PACKET_CALLBACK(ssh_packet_userauth_info_response){
 
       goto error;
     }
+    SAFE_FREE(session->kbdint->answers[i]);
     session->kbdint->answers[i] = ssh_string_to_char(tmp);
     ssh_string_free(tmp);
     if (session->kbdint->answers[i] == NULL) {