Re: sys_chroot+sys_fchdir Fix

[Phillip Susi]

Alan Cox wrote:
> On Fri, 21 Sep 2007 13:39:34 -0400
> Phillip Susi <psusi@xxxxxxxxxx> 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

Does not work for me, and that would be the EXACT thing chroot is 
supposed to prevent.  Maybe you guys are thinking of a program that 
calls chroot() but leaves cwd outside the chroot still being able to 
navigate outside of it?


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