From: Kurt Roeckx <kurt@roeckx.be>
Date: Wed, 15 Jul 2026 13:44:38 +0000 (+0200)
Subject: Apply suggestion from @andrewkdinh
X-Git-Url: http://git.ipfire.org/gitweb/index.cgi?a=commitdiff_plain;h=HEAD;p=thirdparty%2Fopenssl.git

Apply suggestion from @andrewkdinh

Co-authored-by: Andrew Dinh <andrewd@openssl.org>

Reviewed-by: Andrew Dinh <andrewd@openssl.org>
Reviewed-by: Paul Dale <paul.dale@oracle.com>
Reviewed-by: Eugene Syromiatnikov <esyr@openssl.org>
Reviewed-by: Tomas Mraz <tomas@openssl.foundation>
MergeDate: Wed Jul 29 17:04:49 2026
(Merged from https://github.com/openssl/openssl/pull/31957)
---

diff --git a/crypto/bn/bn_exp.c b/crypto/bn/bn_exp.c
index dfe19447c48..50cec8ae5a5 100644
--- a/crypto/bn/bn_exp.c
+++ b/crypto/bn/bn_exp.c
@@ -552,7 +552,7 @@ static int MOD_EXP_CTIME_COPY_FROM_PREBUF(BIGNUM *b, int top,
             BN_ULONG acc = 0;
 
             for (j = 0; j < width; j++) {
-                acc |= table[j] & ((BN_ULONG)0 - (constant_time_eq_int(j, idx) & 1));
+                acc |= table[j] & value_barrier_bn((BN_ULONG)0 - (constant_time_eq_int(j, idx) & 1));
             }
 
             b->d[i] = acc;