From owner-dev-commits-src-all@freebsd.org Mon Feb 1 14:08:07 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 6F9EF52B607; Mon, 1 Feb 2021 14:08:07 +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 4DTqXl2kG8z3hV5; Mon, 1 Feb 2021 14:08:07 +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 507971C957; Mon, 1 Feb 2021 14:08:07 +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 111E879M004924; Mon, 1 Feb 2021 14:08:07 GMT (envelope-from git@gitrepo.freebsd.org) Received: (from git@localhost) by gitrepo.freebsd.org (8.16.1/8.16.1/Submit) id 111E87k3004923; Mon, 1 Feb 2021 14:08:07 GMT (envelope-from git) Date: Mon, 1 Feb 2021 14:08:07 GMT Message-Id: <202102011408.111E87k3004923@gitrepo.freebsd.org> To: src-committers@FreeBSD.org, dev-commits-src-all@FreeBSD.org, dev-commits-src-branches@FreeBSD.org From: Lutz Donnerhacke Subject: git: 90d158c0cf25 - stable/11 - netgraph/ng_tag: permit variable length data MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 8bit X-Git-Committer: donner X-Git-Repository: src X-Git-Refname: refs/heads/stable/11 X-Git-Reftype: branch X-Git-Commit: 90d158c0cf2598fde2ea1c7cd58909cf5a21c471 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: Mon, 01 Feb 2021 14:08:07 -0000 The branch stable/11 has been updated by donner: URL: https://cgit.FreeBSD.org/src/commit/?id=90d158c0cf2598fde2ea1c7cd58909cf5a21c471 commit 90d158c0cf2598fde2ea1c7cd58909cf5a21c471 Author: Lutz Donnerhacke AuthorDate: 2021-01-02 13:58:17 +0000 Commit: Lutz Donnerhacke CommitDate: 2021-02-01 14:07:31 +0000 netgraph/ng_tag: permit variable length data ng_tag(4) operate on arbitrary data of mbuf_tags(9). Those structures are padded to the next multiple of the alignment by the compiler. Hence a valid argument has be at most as long as the data received. PR: 241462 Reviewed by: kp Approved by: philip (mentor) Differential Revision: https://reviews.freebsd.org/D22140 (cherry picked from commit 7c7c231c14246a709270bf3f3a4593208e84d01a) --- sys/netgraph/ng_tag.c | 10 ++++------ 1 file changed, 4 insertions(+), 6 deletions(-) diff --git a/sys/netgraph/ng_tag.c b/sys/netgraph/ng_tag.c index 22d45a3174ad..1a9d44528a24 100644 --- a/sys/netgraph/ng_tag.c +++ b/sys/netgraph/ng_tag.c @@ -361,9 +361,8 @@ ng_tag_rcvmsg(node_p node, item_p item, hook_p lasthook) hook_p hook; /* Sanity check. */ - if (msg->header.arglen < sizeof(*hp) - || msg->header.arglen != - NG_TAG_HOOKIN_SIZE(hp->tag_len)) + if (msg->header.arglen < sizeof(*hp) || + msg->header.arglen < NG_TAG_HOOKIN_SIZE(hp->tag_len)) ERROUT(EINVAL); /* Find hook. */ @@ -383,9 +382,8 @@ ng_tag_rcvmsg(node_p node, item_p item, hook_p lasthook) hook_p hook; /* Sanity check. */ - if (msg->header.arglen < sizeof(*hp) - || msg->header.arglen != - NG_TAG_HOOKOUT_SIZE(hp->tag_len)) + if (msg->header.arglen < sizeof(*hp) || + msg->header.arglen < NG_TAG_HOOKOUT_SIZE(hp->tag_len)) ERROUT(EINVAL); /* Find hook. */