From owner-freebsd-fs@FreeBSD.ORG  Wed Jul 29 09:20:02 2009
Return-Path: <owner-freebsd-fs@FreeBSD.ORG>
Delivered-To: freebsd-fs@hub.freebsd.org
Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34])
	by hub.freebsd.org (Postfix) with ESMTP id B8C3D1065672
	for <freebsd-fs@hub.freebsd.org>; Wed, 29 Jul 2009 09:20:02 +0000 (UTC)
	(envelope-from gnats@FreeBSD.org)
Received: from freefall.freebsd.org (freefall.freebsd.org
	[IPv6:2001:4f8:fff6::28])
	by mx1.freebsd.org (Postfix) with ESMTP id 88DC58FC14
	for <freebsd-fs@hub.freebsd.org>; Wed, 29 Jul 2009 09:20:02 +0000 (UTC)
	(envelope-from gnats@FreeBSD.org)
Received: from freefall.freebsd.org (gnats@localhost [127.0.0.1])
	by freefall.freebsd.org (8.14.3/8.14.3) with ESMTP id n6T9K2o7025797
	for <freebsd-fs@freefall.freebsd.org>; Wed, 29 Jul 2009 09:20:02 GMT
	(envelope-from gnats@freefall.freebsd.org)
Received: (from gnats@localhost)
	by freefall.freebsd.org (8.14.3/8.14.3/Submit) id n6T9K2TZ025796;
	Wed, 29 Jul 2009 09:20:02 GMT (envelope-from gnats)
Date: Wed, 29 Jul 2009 09:20:02 GMT
Message-Id: <200907290920.n6T9K2TZ025796@freefall.freebsd.org>
To: freebsd-fs@FreeBSD.org
From: Marc Olzheim <zlo@zlo.nu>
Cc: 
Subject: Re: kern/127213: [tmpfs] sendfile on tmpfs data corruption
X-BeenThere: freebsd-fs@freebsd.org
X-Mailman-Version: 2.1.5
Precedence: list
Reply-To: Marc Olzheim <zlo@zlo.nu>
List-Id: Filesystems <freebsd-fs.freebsd.org>
List-Unsubscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-fs>,
	<mailto:freebsd-fs-request@freebsd.org?subject=unsubscribe>
List-Archive: <http://lists.freebsd.org/pipermail/freebsd-fs>
List-Post: <mailto:freebsd-fs@freebsd.org>
List-Help: <mailto:freebsd-fs-request@freebsd.org?subject=help>
List-Subscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-fs>,
	<mailto:freebsd-fs-request@freebsd.org?subject=subscribe>
X-List-Received-Date: Wed, 29 Jul 2009 09:20:03 -0000

The following reply was made to PR kern/127213; it has been noted by GNATS.

From: Marc Olzheim <zlo@zlo.nu>
To: bug-followup@FreeBSD.org
Cc:  
Subject: Re: kern/127213: [tmpfs] sendfile on tmpfs data corruption
Date: Wed, 29 Jul 2009 10:51:40 +0200

 This is not just a bug, but a security hole. What you are seeing is the
 content of other VM pages. This has exactly the same symptoms as
 http://security.freebsd.org/advisories/FreeBSD-SA-05:02.sendfile.asc
 
 In short: do not use tmpfs unless you trust all users on the system with
 root access.