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List:       openssl-cvs
Subject:    [openssl-commits] [openssl]  OpenSSL_1_0_1-stable update
From:       Kurt Roeckx <kurt () openssl ! org>
Date:       2015-10-29 19:44:11
Message-ID: 1446147851.430271.6477.nullmailer () dev ! openssl ! org
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The branch OpenSSL_1_0_1-stable has been updated
       via  9f82c7b3aa125b8a91905f61836d79d96d62d5c6 (commit)
      from  200c8ed4f5dd5fce21a3688c2f41d474a3aceca4 (commit)


- Log -----------------------------------------------------------------
commit 9f82c7b3aa125b8a91905f61836d79d96d62d5c6
Author: Pascal Cuoq <cuoq@trust-in-soft.com>
Date:   Mon Oct 12 12:19:19 2015 +0200

    BN_GF2m_mod_inv(): check bn_wexpand return value
    
    Signed-off-by: Kurt Roeckx <kurt@roeckx.be>
    Reviewed-by: Rich Salz <rsalz@akamai.com>
    
    MR #1276, RT #4107
    
    (cherry picked from commit 94b3664a528258df5ebcaae213d19bf6568cc47d)

-----------------------------------------------------------------------

Summary of changes:
 crypto/bn/bn_gf2m.c | 9 ++++++---
 1 file changed, 6 insertions(+), 3 deletions(-)

diff --git a/crypto/bn/bn_gf2m.c b/crypto/bn/bn_gf2m.c
index a7a04f8..8ad44b4 100644
--- a/crypto/bn/bn_gf2m.c
+++ b/crypto/bn/bn_gf2m.c
@@ -700,18 +700,21 @@ int BN_GF2m_mod_inv(BIGNUM *r, const BIGNUM *a, const BIGNUM *p, BN_CTX *ctx)
         int top = p->top;
         BN_ULONG *udp, *bdp, *vdp, *cdp;
 
-        bn_wexpand(u, top);
+        if (!bn_wexpand(u, top))
+            goto err;
         udp = u->d;
         for (i = u->top; i < top; i++)
             udp[i] = 0;
         u->top = top;
-        bn_wexpand(b, top);
+        if (!bn_wexpand(b, top))
+          goto err;
         bdp = b->d;
         bdp[0] = 1;
         for (i = 1; i < top; i++)
             bdp[i] = 0;
         b->top = top;
-        bn_wexpand(c, top);
+        if (!bn_wexpand(c, top))
+          goto err;
         cdp = c->d;
         for (i = 0; i < top; i++)
             cdp[i] = 0;
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