Alan Cox wrote:
quoted text
> On Wed, 19 Sep 2007 09:19:50 +0200
> majkls <majkls@prepere.com> wrote:
> 
>> Hello,
>> here is an fix to an exploit (obtained somewhere in internet). This 
>> exploit can workaround chroot with CAP_SYS_CHROOT. It is also possible 
>> (with sufficient filedescriptor (if there is na directory fd opened in 
>> root) workaround chroot with sys_fchdir. This patch fixes it.
> 
> 
> If you have the ability to use chroot() you are root. If you are root you
> can walk happily out of any chroot by a thousand other means.
> 
I thought this was to prevent breaking out of chroot as a normal user.
	ie. chroot /var/myjail /bin/su - guest
or similar.

-- 
Bill Davidsen <davidsen@tmr.com>
   "We have more to fear from the bungling of the incompetent than from
the machinations of the wicked."  - from Slashdot
-
unsubscribe notice
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/