From nobody Thu Oct 21 22:04:14 2021 X-Original-To: dev-commits-src-all@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 618BE180121D; Thu, 21 Oct 2021 22:04:15 +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 4Hb1jC0KKlz3t87; Thu, 21 Oct 2021 22:04:14 +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 98199230A3; Thu, 21 Oct 2021 22:04:14 +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 19LM4EEb079481; Thu, 21 Oct 2021 22:04:14 GMT (envelope-from git@gitrepo.freebsd.org) Received: (from git@localhost) by gitrepo.freebsd.org (8.16.1/8.16.1/Submit) id 19LM4ENt079480; Thu, 21 Oct 2021 22:04:14 GMT (envelope-from git) Date: Thu, 21 Oct 2021 22:04:14 GMT Message-Id: <202110212204.19LM4ENt079480@gitrepo.freebsd.org> To: src-committers@FreeBSD.org, dev-commits-src-all@FreeBSD.org, dev-commits-src-branches@FreeBSD.org From: John Baldwin Subject: git: 5f9a61203779 - stable/13 - cryptodev: Allow some CIOCCRYPT operations with an empty payload. List-Id: Commit messages for all branches of the src repository List-Archive: https://lists.freebsd.org/archives/dev-commits-src-all List-Help: List-Post: List-Subscribe: List-Unsubscribe: Sender: owner-dev-commits-src-all@freebsd.org X-BeenThere: dev-commits-src-all@freebsd.org MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 8bit X-Git-Committer: jhb X-Git-Repository: src X-Git-Refname: refs/heads/stable/13 X-Git-Reftype: branch X-Git-Commit: 5f9a612037793b51c70e26846334d0e0c4232950 Auto-Submitted: auto-generated X-ThisMailContainsUnwantedMimeParts: N The branch stable/13 has been updated by jhb: URL: https://cgit.FreeBSD.org/src/commit/?id=5f9a612037793b51c70e26846334d0e0c4232950 commit 5f9a612037793b51c70e26846334d0e0c4232950 Author: John Baldwin AuthorDate: 2021-10-06 21:08:47 +0000 Commit: John Baldwin CommitDate: 2021-10-21 21:07:18 +0000 cryptodev: Allow some CIOCCRYPT operations with an empty payload. If an operation would generate a MAC output (e.g. for digest operation or for an AEAD or EtA operation), then an empty payload buffer is valid. Only reject requests with an empty buffer for "plain" cipher sessions. Some of the AES-CCM NIST KAT vectors use an empty payload. While here, don't advance crp_payload_start for requests that use an empty payload with an inline IV. (*) Reported by: syzbot+d4b94fbd9a44b032f428@syzkaller.appspotmail.com (*) Reviewed by: markj Sponsored by: The FreeBSD Foundation Differential Revision: https://reviews.freebsd.org/D32109 (cherry picked from commit a0cbcbb7917b0b8566ec0853425a73d7958ddbed) --- sys/opencrypto/cryptodev.c | 11 +++++++++-- 1 file changed, 9 insertions(+), 2 deletions(-) diff --git a/sys/opencrypto/cryptodev.c b/sys/opencrypto/cryptodev.c index b449c7a12d9f..7e4cecff3980 100644 --- a/sys/opencrypto/cryptodev.c +++ b/sys/opencrypto/cryptodev.c @@ -846,7 +846,7 @@ cryptodev_op(struct csession *cse, const struct crypt_op *cop) } if (cse->txform) { - if (cop->len == 0 || (cop->len % cse->txform->blocksize) != 0) { + if ((cop->len % cse->txform->blocksize) != 0) { SDT_PROBE1(opencrypto, dev, ioctl, error, __LINE__); return (EINVAL); } @@ -901,6 +901,12 @@ cryptodev_op(struct csession *cse, const struct crypt_op *cop) } break; case CSP_MODE_CIPHER: + if (cop->len == 0 || + (cop->iv == NULL && cop->len == cse->ivsize)) { + SDT_PROBE1(opencrypto, dev, ioctl, error, __LINE__); + error = EINVAL; + goto bail; + } switch (cop->op) { case COP_ENCRYPT: crp->crp_op = CRYPTO_OP_ENCRYPT; @@ -984,8 +990,9 @@ cryptodev_op(struct csession *cse, const struct crypt_op *cop) goto bail; } crp->crp_iv_start = 0; - crp->crp_payload_start += cse->ivsize; crp->crp_payload_length -= cse->ivsize; + if (crp->crp_payload_length != 0) + crp->crp_payload_start = cse->ivsize; dst += cse->ivsize; }