netdev - Re: [Security] [SECURITY] Fix leaking of kernel heap addresses via /proc

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Message-Id: <20101107.180108.71121019.davem@davemloft.net>
Date:	Sun, 07 Nov 2010 18:01:08 -0800 (PST)
From:	David Miller <davem@...emloft.net>
To:	andi@...stfloor.org
Cc:	drosenberg@...curity.com, chas3@...rs.sourceforge.net,
	tytso@....edu, torvalds@...ux-foundation.org, kuznet@....inr.ac.ru,
	pekkas@...core.fi, jmorris@...ei.org, yoshfuji@...ux-ipv6.org,
	kaber@...sh.net, remi.denis-courmont@...ia.com,
	netdev@...r.kernel.org, security@...nel.org
Subject: Re: [Security] [SECURITY] Fix leaking of kernel heap addresses via
 /proc

From: Andi Kleen <andi@...stfloor.org>
Date: Mon, 8 Nov 2010 00:56:10 +0100

> I would just remove the pointers from /proc and supply 
> gdb macros that extract the equivalent information from /proc/kcore.
> This is a bit racy, but for debugging it should be no
> problem to run them multiple times as needed.

I do not think at all that this is tenable for the kind of
things people use the socket pointers for when debugging
problems.

I defeinitely prefer the inode number to this idea.
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