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

From: Matthew Garrett
Date: Tue Sep 04 2012 - 12:12:52 EST


On Tue, Sep 04, 2012 at 05:08:53PM +0100, Alan Cox wrote:
> On Tue, 4 Sep 2012 11:55:06 -0400
> Matthew Garrett <mjg@xxxxxxxxxx> 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.

Any well-designed software asking for credentials should already be
requiring a SAK, so in that case we just need to implement sensible SAK
support in Linux.

--
Matthew Garrett | mjg59@xxxxxxxxxxxxx
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