Merge #179333: openssl_3_0: fix apparent x86_64 AVX512 RCE
commit
0c4852c7bc
@ -0,0 +1,34 @@ |
||||
From 4d8a88c134df634ba610ff8db1eb8478ac5fd345 Mon Sep 17 00:00:00 2001
|
||||
From: Xi Ruoyao <xry111@xry111.site>
|
||||
Date: Wed, 22 Jun 2022 18:07:05 +0800
|
||||
Subject: [PATCH] rsa: fix bn_reduce_once_in_place call for
|
||||
rsaz_mod_exp_avx512_x2
|
||||
|
||||
bn_reduce_once_in_place expects the number of BN_ULONG, but factor_size
|
||||
is moduli bit size.
|
||||
|
||||
Fixes #18625.
|
||||
|
||||
Signed-off-by: Xi Ruoyao <xry111@xry111.site>
|
||||
|
||||
Reviewed-by: Tomas Mraz <tomas@openssl.org>
|
||||
Reviewed-by: Paul Dale <pauli@openssl.org>
|
||||
(Merged from https://github.com/openssl/openssl/pull/18626)
|
||||
---
|
||||
crypto/bn/rsaz_exp_x2.c | 3 +++
|
||||
1 file changed, 3 insertions(+)
|
||||
|
||||
diff --git a/crypto/bn/rsaz_exp_x2.c b/crypto/bn/rsaz_exp_x2.c
|
||||
index 6b04486e3f56..f979cebd6fb7 100644
|
||||
--- a/crypto/bn/rsaz_exp_x2.c
|
||||
+++ b/crypto/bn/rsaz_exp_x2.c
|
||||
@@ -257,6 +257,9 @@ int ossl_rsaz_mod_exp_avx512_x2(BN_ULONG *res1,
|
||||
from_words52(res1, factor_size, rr1_red);
|
||||
from_words52(res2, factor_size, rr2_red);
|
||||
|
||||
+ /* bn_reduce_once_in_place expects number of BN_ULONG, not bit size */
|
||||
+ factor_size /= sizeof(BN_ULONG) * 8;
|
||||
+
|
||||
bn_reduce_once_in_place(res1, /*carry=*/0, m1, storage, factor_size);
|
||||
bn_reduce_once_in_place(res2, /*carry=*/0, m2, storage, factor_size);
|
||||
|
Loading…
Reference in new issue