From owner-svn-src-all@freebsd.org  Tue May 17 22:30:44 2016
Return-Path: <owner-svn-src-all@freebsd.org>
Delivered-To: svn-src-all@mailman.ysv.freebsd.org
Received: from mx1.freebsd.org (mx1.freebsd.org
 [IPv6:2001:1900:2254:206a::19:1])
 by mailman.ysv.freebsd.org (Postfix) with ESMTP id DE1F1B40788;
 Tue, 17 May 2016 22:30:44 +0000 (UTC)
 (envelope-from glebius@FreeBSD.org)
Received: from repo.freebsd.org (repo.freebsd.org
 [IPv6:2610:1c1:1:6068::e6a:0])
 (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits))
 (Client did not present a certificate)
 by mx1.freebsd.org (Postfix) with ESMTPS id AF56816E0;
 Tue, 17 May 2016 22:30:44 +0000 (UTC)
 (envelope-from glebius@FreeBSD.org)
Received: from repo.freebsd.org ([127.0.1.37])
 by repo.freebsd.org (8.15.2/8.15.2) with ESMTP id u4HMUhLJ012407;
 Tue, 17 May 2016 22:30:43 GMT (envelope-from glebius@FreeBSD.org)
Received: (from glebius@localhost)
 by repo.freebsd.org (8.15.2/8.15.2/Submit) id u4HMUhPm012406;
 Tue, 17 May 2016 22:30:43 GMT (envelope-from glebius@FreeBSD.org)
Message-Id: <201605172230.u4HMUhPm012406@repo.freebsd.org>
X-Authentication-Warning: repo.freebsd.org: glebius set sender to
 glebius@FreeBSD.org using -f
From: Gleb Smirnoff <glebius@FreeBSD.org>
Date: Tue, 17 May 2016 22:30:43 +0000 (UTC)
To: src-committers@freebsd.org, svn-src-all@freebsd.org,
 svn-src-stable@freebsd.org, svn-src-stable-10@freebsd.org
Subject: svn commit: r300092 - stable/10/sys/kern
X-SVN-Group: stable-10
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
X-BeenThere: svn-src-all@freebsd.org
X-Mailman-Version: 2.1.22
Precedence: list
List-Id: "SVN commit messages for the entire src tree \(except for &quot;
 user&quot; and &quot; projects&quot; \)" <svn-src-all.freebsd.org>
List-Unsubscribe: <https://lists.freebsd.org/mailman/options/svn-src-all>,
 <mailto:svn-src-all-request@freebsd.org?subject=unsubscribe>
List-Archive: <http://lists.freebsd.org/pipermail/svn-src-all/>
List-Post: <mailto:svn-src-all@freebsd.org>
List-Help: <mailto:svn-src-all-request@freebsd.org?subject=help>
List-Subscribe: <https://lists.freebsd.org/mailman/listinfo/svn-src-all>,
 <mailto:svn-src-all-request@freebsd.org?subject=subscribe>
X-List-Received-Date: Tue, 17 May 2016 22:30:45 -0000

Author: glebius
Date: Tue May 17 22:30:43 2016
New Revision: 300092
URL: https://svnweb.freebsd.org/changeset/base/300092

Log:
  Validate that user supplied control message length is not negative.
  
  Submitted by:	C Turt <cturt hardenedbsd.org>
  Security:	SA-16:19
  Security:	CVE-2016-1887

Modified:
  stable/10/sys/kern/uipc_syscalls.c
Directory Properties:
  stable/10/   (props changed)

Modified: stable/10/sys/kern/uipc_syscalls.c
==============================================================================
--- stable/10/sys/kern/uipc_syscalls.c	Tue May 17 22:29:59 2016	(r300091)
+++ stable/10/sys/kern/uipc_syscalls.c	Tue May 17 22:30:43 2016	(r300092)
@@ -1787,6 +1787,9 @@ sockargs(mp, buf, buflen, type)
 	struct mbuf *m;
 	int error;
 
+	if (buflen < 0)
+		return (EINVAL);
+
 	if (buflen > MLEN) {
 #ifdef COMPAT_OLDSOCK
 		if (type == MT_SONAME && buflen <= 112)