From a8dff80726114ff9304ee18cf18de5fcc70f9e87 Mon Sep 17 00:00:00 2001
From: Dan Fandrich <dan@coneharvesters.com>
Date: Mon, 29 Feb 2016 23:54:11 +0100
Subject: [PATCH] libgcrypt: Fixed a NULL pointer dereference on OOM

---
 src/libgcrypt.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/src/libgcrypt.c b/src/libgcrypt.c
index e85aecde..366d007a 100644
--- a/src/libgcrypt.c
+++ b/src/libgcrypt.c
@@ -409,6 +409,9 @@ _libssh2_rsa_sha1_sign(LIBSSH2_SESSION * session,
     }
 
     *signature = LIBSSH2_ALLOC(session, size);
+    if (!*signature) {
+        return -1;
+    }
     memcpy(*signature, tmp, size);
     *signature_len = size;