From: Matt Caswell <matt@openssl.org>
Date: Mon, 22 Aug 2016 22:34:30 +0000 (+0100)
Subject: Check for malloc error in bn_x931p.c
X-Git-Tag: OpenSSL_1_1_0~73
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=4d94bd362dc297c8496a479d1059ec3192fd8bbe;p=openssl

Check for malloc error in bn_x931p.c

Ensure BN_CTX_get() has been successful

Reviewed-by: Tim Hudson <tjh@openssl.org>
---

diff --git a/crypto/bn/bn_x931p.c b/crypto/bn/bn_x931p.c
index 516ad34ca7..40734cb2f6 100644
--- a/crypto/bn/bn_x931p.c
+++ b/crypto/bn/bn_x931p.c
@@ -74,6 +74,9 @@ int BN_X931_derive_prime_ex(BIGNUM *p, BIGNUM *p1, BIGNUM *p2,
 
     pm1 = BN_CTX_get(ctx);
 
+    if (pm1 == NULL)
+        goto err;
+
     if (!bn_x931_derive_pi(p1, Xp1, ctx, cb))
         goto err;