linux-kernel - Re: [PATCH] integrity: Do not load MOK and MOKx when secure boot be disabled

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Date:   Tue, 21 Dec 2021 18:28:31 -0500
From:   Mimi Zohar <zohar@...ux.ibm.com>
To:     "Lee, Chun-Yi" <joeyli.kernel@...il.com>,
        James Morris <jmorris@...ei.org>
Cc:     Eric Snowberg <eric.snowberg@...cle.com>,
        David Howells <dhowells@...hat.com>,
        linux-security-module@...r.kernel.org,
        linux-kernel@...r.kernel.org, "Lee, Chun-Yi" <jlee@...e.com>
Subject: Re: [PATCH] integrity: Do not load MOK and MOKx when secure boot be
 disabled

On Sat, 2021-12-18 at 10:09 +0800, Lee, Chun-Yi wrote:
> The security of Machine Owner Key (MOK) relies on secure boot. When
> secure boot is disabled, EFI firmware will not verify binary code. Then
> arbitrary efi binary code can modify MOK when rebooting.
> 
> This patch prevents MOK/MOKx be loaded when secure boot be disabled.
> 
> Signed-off-by: "Lee, Chun-Yi" <jlee@...e.com>

Thanks, Joey!

This patch is now queued in the next-integrity-testing branch waiting
further review/tags.

Mimi