bugtraq - Re: /proc filesystem allows bypassing directory permissions on Linux

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Message-ID: <20091027005550.GA1394@ucw.cz>
Date: Tue, 27 Oct 2009 01:55:51 +0100
From: Pavel Machek <pavel@....cz>
To: Tamber Penketh <james.penketh@...glemail.com>
Cc: bugtraq@...urityfocus.com
Subject: Re: /proc filesystem allows bypassing directory permissions on
	Linux

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


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