linux-kernel - Re: [RFC][PATCH] Randomize kernel base address on boot

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Message-ID: <4DDFDBD2.2000904@zytor.com>
Date:	Fri, 27 May 2011 10:13:54 -0700
From:	"H. Peter Anvin" <hpa@...or.com>
To:	Dan Rosenberg <drosenberg@...curity.com>
CC:	Ingo Molnar <mingo@...e.hu>,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	"Rafael J. Wysocki" <rjw@...k.pl>, Tony Luck <tony.luck@...il.com>,
	linux-kernel@...r.kernel.org, davej@...hat.com,
	kees.cook@...onical.com, davem@...emloft.net, eranian@...gle.com,
	adobriyan@...il.com, penberg@...nel.org,
	Arjan van de Ven <arjan@...radead.org>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Valdis.Kletnieks@...edu, pageexec@...email.hu
Subject: Re: [RFC][PATCH] Randomize kernel base address on boot

On 05/27/2011 10:10 AM, Dan Rosenberg wrote:
> 
> Just to play devil's advocate, how is it easier for a local attacker to
> figure out where kernel internals are if it's been relinked vs.
> randomized at load time, assuming we follow through on fixing the info
> leaks?
> 

You can read the on-disk kernel file and find out.

	-hpa
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