From 73d76a263876e18c33ad2db91039ca389b2a9cd1 Mon Sep 17 00:00:00 2001
From: Jon Simons <jon@jonsimons.org>
Date: Sat, 9 Sep 2017 20:12:18 -0700
Subject: [PATCH] auth: fix double-free in ssh_userauth_agent_publickey

Fixes T72

Signed-off-by: Jon Simons <jon@jonsimons.org>
Reviewed-by: Andreas Schneider <asn@cryptomilk.org>
---
 src/auth.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/src/auth.c b/src/auth.c
index 8a686dc2..1baec109 100644
--- a/src/auth.c
+++ b/src/auth.c
@@ -707,6 +707,7 @@ static int ssh_userauth_agent_publickey(ssh_session session,
 
     rc = ssh_buffer_add_ssh_string(session->out_buffer, str);
     ssh_string_free(str);
+    str = NULL;
     if (rc < 0) {
         goto fail;
     }