Date: Fri, 21 Sep 2007 19:10:12 +0100
From: Alan Cox <alan@lxorguk.ukuu.org.uk>
To: Phillip Susi <psusi@cfl.rr.com>
Cc: David Newall <david@davidnewall.com>, Bill Davidsen <davidsen@tmr.com>,
       majkls <majkls@prepere.com>, bunk@fs.tum.de,
       linux-kernel@vger.kernel.org
Subject: Re: sys_chroot+sys_fchdir Fix
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On Fri, 21 Sep 2007 13:39:34 -0400
Phillip Susi <psusi@cfl.rr.com> wrote:

> David Newall wrote:
> > * In particular, the superuser can escape from a =91chroot jail=92 by d=
> > oing=20
> > =91mkdir foo; chroot foo; cd ..=92.
> 
> No, he can not.

The superuser can escape that way - its expected and fine behaviour
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