netdev - Re: [PATCH 4/10] Fix leaking of kernel heap addresses in net/

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Date:	Thu, 11 Nov 2010 18:49:02 -0800 (PST)
From:	David Miller <davem@...emloft.net>
To:	drosenberg@...curity.com
Cc:	socketcan@...tkopp.net, kuznet@....inr.ac.ru,
	urs.thuermann@...kswagen.de, yoshfuji@...ux-ipv6.org,
	kaber@...sh.net, jmorris@...ei.org, remi.denis-courmont@...ia.com,
	pekkas@...core.fi, sri@...ibm.com, vladislav.yasevich@...com,
	tj@...nel.org, eric.dumazet@...il.com, lizf@...fujitsu.com,
	joe@...ches.com, shemminger@...tta.com, hadi@...atatu.com,
	ebiederm@...ssion.com, adobriyan@...il.com, jpirko@...hat.com,
	johannes.berg@...el.com, daniel.lezcano@...e.fr, xemul@...nvz.org,
	socketcan-core@...ts.berlios.de, netdev@...r.kernel.org,
	linux-sctp@...r.kernel.org, torvalds@...ux-foundation.org
Subject: Re: [PATCH 4/10] Fix leaking of kernel heap addresses in net/

From: Dan Rosenberg <drosenberg@...curity.com>
Date: Thu, 11 Nov 2010 21:34:29 -0500

> 
>> I want whatever you replace it with to be equivalent for
>> object tracking purposes.
> 
> In nearly all of the cases I fixed, the socket inode is already
> provided, which serves as a perfectly good unique identifier.  Would you
> prefer I include that information twice?

The problem is that the socket inode is not available in a certain
subclass of cases, so the transformation is not equivalent.

Why not attack this at the heart of where your concern is, and hack
the %p format handling to do whatever it is you like instead of
patching code all over the tree?
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