Re: Re: [PATCH v2 3/3] efi: Capsule update with user helper interface

From: Andy Lutomirski
Date: Tue Mar 03 2015 - 16:56:59 EST


On Mar 3, 2015 12:51 PM, "Borislav Petkov" <bp@xxxxxxxxx> wrote:
>
> On Tue, Mar 03, 2015 at 12:37:54PM -0800, Andy Lutomirski wrote:
> > The user *should not* be required to have write access to anything in
> > /lib to install a UEFI capsule that they download from their
> > motherboard vendor's website. /lib belongs to the distro, and UEFI
> > capsules do not belong to the distro. In this regard, UEFI capsules
> > are completely unlike your wireless card firmware, your cpu microcode,
> > etc.
>
> Oh oh but but, if an UEFI capsule can brick the system, a normal user
> would be able to brick that system then. I think we should forbid that.

Absolutely. That's why I said

# uefi-load-capsule

and not

$ uefi-load-capsule

:)

>
> I agree with the rest of your note that a simple
>
> cat <fw_blob> > /sys/...
>
> should be enough.
>
> --
> Regards/Gruss,
> Boris.
>
> ECO tip #101: Trim your mails when you reply.
> --
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