From 6ea511211ce190cc336e94ccde7723fadf0b5a07 Mon Sep 17 00:00:00 2001
From: "Dr. Stephen Henson" <steve@openssl.org>
Date: Sat, 5 Jul 2014 22:32:39 +0100
Subject: Only cleanse sbuf if it is not NULL.

PR#2339
---
 fips/rsa/fips_rsa_sign.c | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/fips/rsa/fips_rsa_sign.c b/fips/rsa/fips_rsa_sign.c
index a4e03e7417..4956971f04 100644
--- a/fips/rsa/fips_rsa_sign.c
+++ b/fips/rsa/fips_rsa_sign.c
@@ -288,8 +288,11 @@ int FIPS_rsa_sign_digest(RSA *rsa, const unsigned char *md, int md_len,
 			*siglen=j;
 			}
 		psserr:
-		OPENSSL_cleanse(sbuf, i);
-		OPENSSL_free(sbuf);
+		if (sbuf)
+			{
+			OPENSSL_cleanse(sbuf, i);
+			OPENSSL_free(sbuf);
+			}
 		return ret;
 		}
 
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