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Re: /proc filesystem allows bypassing directory permissions on Linux

From: Pavel Machek <pavel ucw cz>
To: Tamber Penketh <james penketh googlemail com>
Cc: bugtraq securityfocus com
Subject: Re: /proc filesystem allows bypassing directory permissions on Linux
Date: Mon - Oct 26, 2009 05:51 PM


On Mon 2009-10-26 16:05:18, Tamber Penketh wrote:
> On Friday 23 October 2009 23:39:24 Pavel Machek wrote:
> 
> > Check it again.  There's no race; I check link count before chmod 666.
> And between checking the link count and the chmod?

At that point directory permissions will already disallow any changes.

                                                                Pavel


-- 
(english) http://www.livejournal.com/~pavelmachek
(cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html




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