From nobody Wed Sep 17 11:57:09 2025 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 56384C4332F for ; Tue, 20 Dec 2022 05:42:12 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233044AbiLTFmJ (ORCPT ); Tue, 20 Dec 2022 00:42:09 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:52116 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229895AbiLTFmB (ORCPT ); Tue, 20 Dec 2022 00:42:01 -0500 Received: from ams.source.kernel.org (ams.source.kernel.org [145.40.68.75]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 43E5AA188; Mon, 19 Dec 2022 21:42:00 -0800 (PST) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by ams.source.kernel.org (Postfix) with ESMTPS id E1E7BB811A3; Tue, 20 Dec 2022 05:41:58 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 6F4F8C43398; Tue, 20 Dec 2022 05:41:56 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1671514917; bh=3n9ADRO4nwA4vng1EWokN1HkHn+cKE/ZleCXkk6FZuU=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=IvUk8ADqzbVfp/roQjX87ypPf+5oAlzPl/WmfbZwTC7hJGifzKIvrISekXo1QbPwj 77veN4ECatl/Cp4R0djvSgbZtgQ55keX8ZIkZI6jwUwT7Rr+rlabmPl5waJUVMEYj6 XyAo0xmS282IUjrk6asDmm9DdzzAFQgTRU4HxJjUaPmxA1hb+Iu5q+ddQU8JBD6mm3 pmfhJ238h55NLqoCVkky8COjAQAbUY+kKd3+uo5qVrJratiTxIXlJhqeLW1lo+OA7M 9buDvhj1+x2uw3hIpNFy1RbrfxJv0tFYb3c95M8thLEx4T6NY9TZm8pqO+xvypQF+X XOzOZKCnjxGzQ== From: Eric Biggers To: linux-crypto@vger.kernel.org Cc: Peter Zijlstra , corbet@lwn.net, will@kernel.org, boqun.feng@gmail.com, mark.rutland@arm.com, catalin.marinas@arm.com, dennis@kernel.org, tj@kernel.org, cl@linux.com, hca@linux.ibm.com, gor@linux.ibm.com, agordeev@linux.ibm.com, borntraeger@linux.ibm.com, svens@linux.ibm.com, Herbert Xu , davem@davemloft.net, tglx@linutronix.de, mingo@redhat.com, bp@alien8.de, dave.hansen@linux.intel.com, x86@kernel.org, hpa@zytor.com, joro@8bytes.org, suravee.suthikulpanit@amd.com, robin.murphy@arm.com, dwmw2@infradead.org, baolu.lu@linux.intel.com, Arnd Bergmann , penberg@kernel.org, rientjes@google.com, iamjoonsoo.kim@lge.com, Andrew Morton , vbabka@suse.cz, roman.gushchin@linux.dev, 42.hyeyoo@gmail.com, linux-doc@vger.kernel.org, linux-kernel@vger.kernel.org, linux-mm@kvack.org, linux-s390@vger.kernel.org, iommu@lists.linux.dev, linux-arch@vger.kernel.org Subject: [PATCH 1/3] crypto: x86/ghash - fix unaligned access in ghash_setkey() Date: Mon, 19 Dec 2022 21:40:40 -0800 Message-Id: <20221220054042.188537-2-ebiggers@kernel.org> X-Mailer: git-send-email 2.39.0 In-Reply-To: <20221220054042.188537-1-ebiggers@kernel.org> References: <20221220054042.188537-1-ebiggers@kernel.org> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Type: text/plain; charset="utf-8" From: Eric Biggers The key can be unaligned, so use the unaligned memory access helpers. Fixes: 8ceee72808d1 ("crypto: ghash-clmulni-intel - use C implementation fo= r setkey()") Signed-off-by: Eric Biggers --- arch/x86/crypto/ghash-clmulni-intel_glue.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/arch/x86/crypto/ghash-clmulni-intel_glue.c b/arch/x86/crypto/g= hash-clmulni-intel_glue.c index 1f1a95f3dd0c..c0ab0ff4af65 100644 --- a/arch/x86/crypto/ghash-clmulni-intel_glue.c +++ b/arch/x86/crypto/ghash-clmulni-intel_glue.c @@ -19,6 +19,7 @@ #include #include #include +#include =20 #define GHASH_BLOCK_SIZE 16 #define GHASH_DIGEST_SIZE 16 @@ -54,15 +55,14 @@ static int ghash_setkey(struct crypto_shash *tfm, const u8 *key, unsigned int keylen) { struct ghash_ctx *ctx =3D crypto_shash_ctx(tfm); - be128 *x =3D (be128 *)key; u64 a, b; =20 if (keylen !=3D GHASH_BLOCK_SIZE) return -EINVAL; =20 /* perform multiplication by 'x' in GF(2^128) */ - a =3D be64_to_cpu(x->a); - b =3D be64_to_cpu(x->b); + a =3D get_unaligned_be64(key); + b =3D get_unaligned_be64(key + 8); =20 ctx->shash.a =3D (b << 1) | (a >> 63); ctx->shash.b =3D (a << 1) | (b >> 63); --=20 2.39.0