linux-kernel - Re: Chroot bug (was: sys_chroot+sys

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Message-ID: <20070925163040.12a3c2f8@the-village.bc.nu>
Date:	Tue, 25 Sep 2007 16:30:40 +0100
From:	Alan Cox <alan@...rguk.ukuu.org.uk>
To:	David Newall <david@...idnewall.com>
Cc:	"Serge E. Hallyn" <serge@...lyn.com>,
	Bill Davidsen <davidsen@....com>,
	Philipp Marek <philipp@...ek.priv.at>, 7eggert@....de,
	majkls <majkls@...pere.com>, bunk@...tum.de,
	linux-kernel@...r.kernel.org
Subject: Re: Chroot bug (was: sys_chroot+sys_fchdir Fix)

> Marek's loading dynamic libraries, it seems clear that the prime purpose 
> of chroot is to aid security.  Being able to cd your way out is handy 

Does it - I can't find any evidence for that. I think you are confusing
containers and chroot. They are quite different things. A root user can
get out of a chroot a million different ways

Alan
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