linux-kernel - Re: [RFC] First attempt at kernel secure boot support

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Message-ID: <20120904170853.0fa6b27b@pyramind.ukuu.org.uk>
Date:	Tue, 4 Sep 2012 17:08:53 +0100
From:	Alan Cox <alan@...rguk.ukuu.org.uk>
To:	Matthew Garrett <mjg@...hat.com>
Cc:	linux-kernel@...r.kernel.org,
	linux-security-module@...r.kernel.org, linux-efi@...r.kernel.org
Subject: Re: [RFC] First attempt at kernel secure boot support

On Tue,  4 Sep 2012 11:55:06 -0400
Matthew Garrett <mjg@...hat.com> wrote:

> The UEFI Secure Boot trust model is based on it not being possible for a
> user to cause a signed OS to boot an unsigned OS

Unfortunately you can't fix this at kernel level because an untrusted
application can at GUI level fake a system crash, reboot cycle and phish
any basic credentials such as passwords for the windows partition.

Alan
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