From nobody Tue Nov 16 18:52:40 2021 X-Original-To: dev-commits-src-main@mlmmj.nyi.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mlmmj.nyi.freebsd.org (Postfix) with ESMTP id 2F992189DF34; Tue, 16 Nov 2021 18:52:41 +0000 (UTC) (envelope-from git@FreeBSD.org) Received: from mxrelay.nyi.freebsd.org (mxrelay.nyi.freebsd.org [IPv6:2610:1c1:1:606c::19:3]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256 client-signature RSA-PSS (4096 bits) client-digest SHA256) (Client CN "mxrelay.nyi.freebsd.org", Issuer "R3" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 4HtwD90Y3lz4ZTP; Tue, 16 Nov 2021 18:52:41 +0000 (UTC) (envelope-from git@FreeBSD.org) Received: from gitrepo.freebsd.org (gitrepo.freebsd.org [IPv6:2610:1c1:1:6068::e6a:5]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256) (Client did not present a certificate) by mxrelay.nyi.freebsd.org (Postfix) with ESMTPS id E88F712D1F; Tue, 16 Nov 2021 18:52:40 +0000 (UTC) (envelope-from git@FreeBSD.org) Received: from gitrepo.freebsd.org ([127.0.1.44]) by gitrepo.freebsd.org (8.16.1/8.16.1) with ESMTP id 1AGIqeCV017838; Tue, 16 Nov 2021 18:52:40 GMT (envelope-from git@gitrepo.freebsd.org) Received: (from git@localhost) by gitrepo.freebsd.org (8.16.1/8.16.1/Submit) id 1AGIqebV017837; Tue, 16 Nov 2021 18:52:40 GMT (envelope-from git) Date: Tue, 16 Nov 2021 18:52:40 GMT Message-Id: <202111161852.1AGIqebV017837@gitrepo.freebsd.org> To: src-committers@FreeBSD.org, dev-commits-src-all@FreeBSD.org, dev-commits-src-main@FreeBSD.org From: Mark Johnston Subject: git: 4285655adb74 - main - aesni: Avoid a potential out-of-bounds load in AES_GCM_encrypt() List-Id: Commit messages for the main branch of the src repository List-Archive: https://lists.freebsd.org/archives/dev-commits-src-main List-Help: List-Post: List-Subscribe: List-Unsubscribe: Sender: owner-dev-commits-src-main@freebsd.org X-BeenThere: dev-commits-src-main@freebsd.org MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 8bit X-Git-Committer: markj X-Git-Repository: src X-Git-Refname: refs/heads/main X-Git-Reftype: branch X-Git-Commit: 4285655adb7480336857bf8e051365d73db18011 Auto-Submitted: auto-generated X-ThisMailContainsUnwantedMimeParts: N The branch main has been updated by markj: URL: https://cgit.FreeBSD.org/src/commit/?id=4285655adb7480336857bf8e051365d73db18011 commit 4285655adb7480336857bf8e051365d73db18011 Author: Mark Johnston AuthorDate: 2021-11-16 14:16:16 +0000 Commit: Mark Johnston CommitDate: 2021-11-16 18:30:22 +0000 aesni: Avoid a potential out-of-bounds load in AES_GCM_encrypt() Reported by: Jenkins (KASAN job) Reviewed by: cem, jhb MFC after: 1 week Sponsored by: The FreeBSD Foundation Differential Revision: https://reviews.freebsd.org/D33012 --- sys/crypto/aesni/aesni_ghash.c | 7 ++++--- 1 file changed, 4 insertions(+), 3 deletions(-) diff --git a/sys/crypto/aesni/aesni_ghash.c b/sys/crypto/aesni/aesni_ghash.c index b0d1b6137ec6..a1295b6ccbda 100644 --- a/sys/crypto/aesni/aesni_ghash.c +++ b/sys/crypto/aesni/aesni_ghash.c @@ -504,9 +504,10 @@ AES_GCM_encrypt(const unsigned char *in, unsigned char *out, } tmp1 = _mm_aesenc_si128(tmp1, KEY[nr-1]); tmp1 = _mm_aesenclast_si128(tmp1, KEY[nr]); - tmp1 = _mm_xor_si128(tmp1, - _mm_loadu_si128(&((const __m128i *)in)[k])); - last_block = tmp1; + last_block = _mm_setzero_si128(); + memcpy(&last_block, &((const __m128i *)in)[k], + nbytes % 16); + last_block = _mm_xor_si128(last_block, tmp1); for (j=0; j