[openssl-commits] [openssl] master update

[paul.dale at oracle.com]

The branch master has been updated
       via  3d3cbce550ff5d6172cf28dbbf80bda93f6577a9 (commit)
      from  35c9408108f3608eb572acd7f64a93cf4f43f4f6 (commit)


- Log -----------------------------------------------------------------
commit 3d3cbce550ff5d6172cf28dbbf80bda93f6577a9
Author: Pauli <paul.dale at oracle.com>
Date:   Tue Jul 31 13:11:00 2018 +1000

    Check return from BN_sub
    
    Reviewed-by: Tim Hudson <tjh at openssl.org>
    (Merged from https://github.com/openssl/openssl/pull/6823)

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

Summary of changes:
 crypto/rsa/rsa_ossl.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/crypto/rsa/rsa_ossl.c b/crypto/rsa/rsa_ossl.c
index feb1ab4..c441905 100644
--- a/crypto/rsa/rsa_ossl.c
+++ b/crypto/rsa/rsa_ossl.c
@@ -339,7 +339,8 @@ static int rsa_ossl_private_encrypt(int flen, const unsigned char *from,
             goto err;
 
     if (padding == RSA_X931_PADDING) {
-        BN_sub(f, rsa->n, ret);
+        if (!BN_sub(f, rsa->n, ret))
+            goto err;
         if (BN_cmp(ret, f) > 0)
             res = f;
         else