[openssl-commits] [openssl] OpenSSL_1_1_1-stable update

[Matt Caswell]

The branch OpenSSL_1_1_1-stable has been updated
       via  3b16099e0c8df1fd5094ad4490d87ab31516bf25 (commit)
      from  5db5edc99a8386516da06f8078e5134ccd65a64b (commit)


- Log -----------------------------------------------------------------
commit 3b16099e0c8df1fd5094ad4490d87ab31516bf25
Author: Mansour Ahmadi <m.ahmadi at northeastern.edu>
Date:   Tue Dec 11 15:48:08 2018 -0500

    add missing check for BN_mod_inverse
    
    Fixes #7650
    
    Reviewed-by: Kurt Roeckx <kurt at roeckx.be>
    Reviewed-by: Matt Caswell <matt at openssl.org>
    (Merged from https://github.com/openssl/openssl/pull/7876)
    
    (cherry picked from commit 55833a8de70589a5000044b6291e190f5a3826ae)

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

Summary of changes:
 crypto/rsa/rsa_x931g.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/crypto/rsa/rsa_x931g.c b/crypto/rsa/rsa_x931g.c
index 3563670..15e40e8 100644
--- a/crypto/rsa/rsa_x931g.c
+++ b/crypto/rsa/rsa_x931g.c
@@ -128,6 +128,8 @@ int RSA_X931_derive_ex(RSA *rsa, BIGNUM *p1, BIGNUM *p2, BIGNUM *q1,
 
     /* calculate inverse of q mod p */
     rsa->iqmp = BN_mod_inverse(NULL, rsa->q, rsa->p, ctx2);
+    if (rsa->iqmp == NULL)
+        goto err;
 
     ret = 1;
  err: