From: Ulf Möller <ulf@openssl.org>
Date: Sat, 6 Dec 2003 11:39:37 +0000 (+0000)
Subject: Avoid segfault if ret==0.
X-Git-Tag: BEN_FIPS_TEST_5~13^2~20
X-Git-Url: https://git.librecmc.org/?a=commitdiff_plain;h=ce38bb1a8c68db205069dc4595afcd02594c9d98;p=oweals%2Fopenssl.git

Avoid segfault if ret==0.

Submitted by: Nils Larsch
---

diff --git a/crypto/bn/bn_gcd.c b/crypto/bn/bn_gcd.c
index f02e6fcdb4..0248753f6d 100644
--- a/crypto/bn/bn_gcd.c
+++ b/crypto/bn/bn_gcd.c
@@ -488,6 +488,7 @@ BIGNUM *BN_mod_inverse(BIGNUM *in,
 err:
 	if ((ret == NULL) && (in == NULL)) BN_free(R);
 	BN_CTX_end(ctx);
-	bn_check_top(ret);
+	if (ret)
+		bn_check_top(ret);
 	return(ret);
 	}