From owner-svn-src-stable-8@FreeBSD.ORG  Fri Mar 12 06:56:52 2010
Return-Path: <owner-svn-src-stable-8@FreeBSD.ORG>
Delivered-To: svn-src-stable-8@freebsd.org
Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34])
	by hub.freebsd.org (Postfix) with ESMTP id 3092C106566C;
	Fri, 12 Mar 2010 06:56:52 +0000 (UTC) (envelope-from jh@FreeBSD.org)
Received: from svn.freebsd.org (svn.freebsd.org [IPv6:2001:4f8:fff6::2c])
	by mx1.freebsd.org (Postfix) with ESMTP id 217488FC08;
	Fri, 12 Mar 2010 06:56:52 +0000 (UTC)
Received: from svn.freebsd.org (localhost [127.0.0.1])
	by svn.freebsd.org (8.14.3/8.14.3) with ESMTP id o2C6uqNr022869;
	Fri, 12 Mar 2010 06:56:52 GMT (envelope-from jh@svn.freebsd.org)
Received: (from jh@localhost)
	by svn.freebsd.org (8.14.3/8.14.3/Submit) id o2C6uqQD022867;
	Fri, 12 Mar 2010 06:56:52 GMT (envelope-from jh@svn.freebsd.org)
Message-Id: <201003120656.o2C6uqQD022867@svn.freebsd.org>
From: Jaakko Heinonen <jh@FreeBSD.org>
Date: Fri, 12 Mar 2010 06:56:51 +0000 (UTC)
To: src-committers@freebsd.org, svn-src-all@freebsd.org,
	svn-src-stable@freebsd.org, svn-src-stable-8@freebsd.org
X-SVN-Group: stable-8
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
Cc: 
Subject: svn commit: r205070 - stable/8/lib/libc/stdio
X-BeenThere: svn-src-stable-8@freebsd.org
X-Mailman-Version: 2.1.5
Precedence: list
List-Id: SVN commit messages for only the 8-stable src tree
	<svn-src-stable-8.freebsd.org>
List-Unsubscribe: <http://lists.freebsd.org/mailman/listinfo/svn-src-stable-8>, 
	<mailto:svn-src-stable-8-request@freebsd.org?subject=unsubscribe>
List-Archive: <http://lists.freebsd.org/pipermail/svn-src-stable-8>
List-Post: <mailto:svn-src-stable-8@freebsd.org>
List-Help: <mailto:svn-src-stable-8-request@freebsd.org?subject=help>
List-Subscribe: <http://lists.freebsd.org/mailman/listinfo/svn-src-stable-8>, 
	<mailto:svn-src-stable-8-request@freebsd.org?subject=subscribe>
X-List-Received-Date: Fri, 12 Mar 2010 06:56:52 -0000

Author: jh
Date: Fri Mar 12 06:56:51 2010
New Revision: 205070
URL: http://svn.freebsd.org/changeset/base/205070

Log:
  MFC r204447:
  
  In _gettemp(), check that the length of the path doesn't exceed
  MAXPATHLEN. Otherwise the path name (or part of it) may not fit to
  carrybuf causing a buffer overflow.
  
  PR:		bin/140228

Modified:
  stable/8/lib/libc/stdio/mktemp.c
Directory Properties:
  stable/8/lib/libc/   (props changed)
  stable/8/lib/libc/stdtime/   (props changed)

Modified: stable/8/lib/libc/stdio/mktemp.c
==============================================================================
--- stable/8/lib/libc/stdio/mktemp.c	Fri Mar 12 06:31:19 2010	(r205069)
+++ stable/8/lib/libc/stdio/mktemp.c	Fri Mar 12 06:56:51 2010	(r205070)
@@ -116,6 +116,10 @@ _gettemp(path, doopen, domkdir, slen)
 
 	for (trv = path; *trv != '\0'; ++trv)
 		;
+	if (trv - path >= MAXPATHLEN) {
+		errno = ENAMETOOLONG;
+		return (0);
+	}
 	trv -= slen;
 	suffp = trv;
 	--trv;