Re: [GIT PULL] Kernel lockdown for secure boot

From: Linus Torvalds
Date: Tue Apr 03 2018 - 16:53:15 EST


On Tue, Apr 3, 2018 at 9:29 AM, Matthew Garrett <mjg59@xxxxxxxxxx> wrote:
> On Tue, Apr 3, 2018 at 8:11 AM Andy Lutomirski <luto@xxxxxxxxxx> wrote:
>> Can you explain that much more clearly? I'm asking why booting via
>> UEFI Secure Boot should enable lockdown, and I don't see what this has
>> to do with kexec. And "someone blacklist[ing] your key in the
>> bootloader" sounds like a political issue, not a technical issue.
>
> A kernel that allows users arbitrary access to ring 0 is just an
> overfeatured bootloader. Why would you want secure boot in that case?

.. maybe you don't *want* secure boot, but it's been pushed in your
face by people with an agenda?

Seriously.

Linus