[openssl-commits] [openssl] OpenSSL_1_0_2-stable update

[Paul I. Dale]

The branch OpenSSL_1_0_2-stable has been updated
       via  43e6a58d4991a451daf4891ff05a48735df871ac (commit)
      from  896e8c5713b50ff2ef1478d5c6709874ce57cf05 (commit)


- Log -----------------------------------------------------------------
commit 43e6a58d4991a451daf4891ff05a48735df871ac
Author: Pauli <paul.dale at oracle.com>
Date:   Mon Oct 29 08:24:22 2018 +1000

    Merge DSA reallocation timing fix CVE-2018-0734.
    
    Reviewed-by: Richard Levitte <levitte at openssl.org>
    (Merged from https://github.com/openssl/openssl/pull/7513)

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

Summary of changes:
 crypto/dsa/dsa_ossl.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/crypto/dsa/dsa_ossl.c b/crypto/dsa/dsa_ossl.c
index 2dcfede..100e269 100644
--- a/crypto/dsa/dsa_ossl.c
+++ b/crypto/dsa/dsa_ossl.c
@@ -279,7 +279,7 @@ static int dsa_sign_setup(DSA *dsa, BN_CTX *ctx_in, BIGNUM **kinvp,
         goto err;
 
     /* Preallocate space */
-    q_bits = BN_num_bits(dsa->q);
+    q_bits = BN_num_bits(dsa->q) + sizeof(dsa->q->d[0]) * 16;
     if (!BN_set_bit(&k, q_bits)
         || !BN_set_bit(&l, q_bits)
         || !BN_set_bit(&m, q_bits))