linux-kernel - Re: [PATCH 00/12] One more attempt at useful kernel lockdown

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Message-ID: <522F6519.4030004@zytor.com>
Date:	Tue, 10 Sep 2013 11:29:45 -0700
From:	"H. Peter Anvin" <hpa@...or.com>
To:	Matthew Garrett <matthew.garrett@...ula.com>
CC:	Henrique de Moraes Holschuh <hmh@....eng.br>,
	David Lang <david@...g.hm>,
	"Valdis.Kletnieks@...edu" <Valdis.Kletnieks@...edu>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"keescook@...omium.org" <keescook@...omium.org>,
	"gregkh@...uxfoundation.org" <gregkh@...uxfoundation.org>,
	"linux-efi@...r.kernel.org" <linux-efi@...r.kernel.org>,
	"jmorris@...ei.org" <jmorris@...ei.org>,
	"linux-security-module@...r.kernel.org" 
	<linux-security-module@...r.kernel.org>
Subject: Re: [PATCH 00/12] One more attempt at useful kernel lockdown

On 09/10/2013 11:26 AM, Matthew Garrett wrote:
> On Tue, 2013-09-10 at 14:23 -0300, Henrique de Moraes Holschuh wrote:
>> On Tue, 10 Sep 2013, Matthew Garrett wrote:
>>> That's why modern systems require signed firmware updates.
>>
>> Linux doesn't.  Is someone working on adding signature support to the
>> runtime firmware loader?
> 
> It'd be simple to do so, but so far the model appears to be that devices
> that expect signed firmware enforce that themselves.
> 

Most devices do absolutely no verification on the firmware, and simply
trust the driver.

So signing firmware is probably critical.

	-hpa

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