From: Andrea Arcangeli <andrea@suse.de>
To: linux-kernel@vger.kernel.org, Alan Cox <alan@lxorguk.ukuu.org.uk>
Subject: Re: Linux 2.2.18pre21
Date: Thu, 16 Nov 2000 17:16:18 +0100 [thread overview]
Message-ID: <20001116171618.A25545@athlon.random> (raw)
In-Reply-To: <E13u4XD-0001oe-00@the-village.bc.nu> <20001116150704.A883@emma1.emma.line.org>
In-Reply-To: <20001116150704.A883@emma1.emma.line.org>; from matthias.andree@stud.uni-dortmund.de on Thu, Nov 16, 2000 at 03:07:04PM +0100
On Thu, Nov 16, 2000 at 03:07:04PM +0100, Matthias Andree wrote:
> It shows a program that saves the cwd -- open(".",...) in an open file,
> then chroots [..]
This is known behaviour (I know Alan knows about it too), solution is to close
open directories filedescriptors before chrooting.
Everything that happens before chroot(2) is trusted, so it's secure to rely
on it to close directories first.
If this is not well documented and people doesn't know about it and so they
writes unsafe code that's another issue...
Andrea
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next prev parent reply other threads:[~2000-11-16 16:46 UTC|newest]
Thread overview: 40+ messages / expand[flat|nested] mbox.gz Atom feed top
2000-11-10 3:07 Linux 2.2.18pre21 Alan Cox
2000-11-10 3:44 ` David S. Miller
2000-11-10 11:35 ` Benjamin Herrenschmidt
2000-11-10 15:42 ` Tom Rini
2000-11-10 15:34 ` David S. Miller
2000-11-10 10:59 ` Arnaud S . Launay
2000-11-10 10:52 ` David S. Miller
2000-11-16 14:07 ` Matthias Andree
2000-11-16 16:16 ` Andrea Arcangeli [this message]
2000-11-16 19:52 ` jesse
2000-11-16 20:02 ` chroot [Was: Re: Linux 2.2.18pre21] Kurt Roeckx
2000-11-16 21:40 ` Linux 2.2.18pre21 Alan Cox
2000-11-18 10:07 ` Rogier Wolff
2000-11-18 17:32 ` kuznet
2000-11-18 17:34 ` Rogier Wolff
2000-11-18 17:47 ` kuznet
2000-11-18 17:51 ` Rogier Wolff
2000-11-16 22:56 ` Matthias Andree
2000-11-17 6:30 ` Peter Samuelson
2000-11-17 6:40 ` H. Peter Anvin
2000-11-17 11:22 ` Peter Samuelson
2000-11-17 17:35 ` H. Peter Anvin
2000-11-17 11:34 ` Matthias Andree
2000-11-17 19:23 ` jesse
2000-11-18 20:44 ` Pavel Machek
2000-11-18 1:38 ` Nix
2000-11-21 4:19 ` Peter Samuelson
-- strict thread matches above, loose matches on Subject: below --
2000-11-10 9:28 willy tarreau
2000-11-10 9:44 ` Matti Aarnio
2000-11-10 9:57 ` Constantine Gavrilov
2000-11-10 10:14 ` Matti Aarnio
2000-11-10 10:22 ` Constantine Gavrilov
2000-11-10 10:51 ` Matti Aarnio
2000-11-10 19:11 ` Thomas Davis
2000-11-10 10:18 ` Constantine Gavrilov
2000-11-10 10:40 willy tarreau
2000-11-10 10:49 willy tarreau
2000-11-10 11:21 willy tarreau
2000-11-13 7:00 willy tarreau
2000-11-13 9:47 willy tarreau
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