From owner-dev-commits-src-all@freebsd.org Fri Sep 24 19:06:28 2021 Return-Path: Delivered-To: dev-commits-src-all@mailman.nyi.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mailman.nyi.freebsd.org (Postfix) with ESMTP id ED91C6729EB; Fri, 24 Sep 2021 19:06:28 +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 4HGM2X5Cglz3kx7; Fri, 24 Sep 2021 19:06:28 +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 933361BE3F; Fri, 24 Sep 2021 19:06:28 +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 18OJ6Sl2031695; Fri, 24 Sep 2021 19:06:28 GMT (envelope-from git@gitrepo.freebsd.org) Received: (from git@localhost) by gitrepo.freebsd.org (8.16.1/8.16.1/Submit) id 18OJ6SX3031694; Fri, 24 Sep 2021 19:06:28 GMT (envelope-from git) Date: Fri, 24 Sep 2021 19:06:28 GMT Message-Id: <202109241906.18OJ6SX3031694@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: 7c2f227a17de - main - opencrypto: Disallow requests which pass VERIFY_DIGEST without a MAC 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: 7c2f227a17ded0934c5941c7911797edb7d770a2 Auto-Submitted: auto-generated X-BeenThere: dev-commits-src-all@freebsd.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: Commit messages for all branches of the src repository List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 24 Sep 2021 19:06:29 -0000 The branch main has been updated by markj: URL: https://cgit.FreeBSD.org/src/commit/?id=7c2f227a17ded0934c5941c7911797edb7d770a2 commit 7c2f227a17ded0934c5941c7911797edb7d770a2 Author: Mark Johnston AuthorDate: 2021-09-24 19:04:45 +0000 Commit: Mark Johnston CommitDate: 2021-09-24 19:04:45 +0000 opencrypto: Disallow requests which pass VERIFY_DIGEST without a MAC Otherwise we can end up comparing the computed digest with an uninitialized kernel buffer. In cryptoaead_op() we already unconditionally fail the request if a pointer to a digest buffer is not specified. Based on a patch by Simran Kathpalia. Reported by: syzkaller Reviewed by: jhb MFC after: 1 week Pull Request: https://github.com/freebsd/freebsd-src/pull/529 Differential Revision: https://reviews.freebsd.org/D32124 --- sys/opencrypto/cryptodev.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/sys/opencrypto/cryptodev.c b/sys/opencrypto/cryptodev.c index 6bbcf977ac72..5d281f3157fa 100644 --- a/sys/opencrypto/cryptodev.c +++ b/sys/opencrypto/cryptodev.c @@ -889,7 +889,7 @@ cryptodev_op(struct csession *cse, const struct crypt_op *cop) dst += cse->ivsize; } - if (cop->mac != NULL && crp->crp_op & CRYPTO_OP_VERIFY_DIGEST) { + if (crp->crp_op & CRYPTO_OP_VERIFY_DIGEST) { error = copyin(cop->mac, cod->buf + crp->crp_digest_start, cse->hashsize); if (error) {