linux-kernel - Firmware signing -- Re: [PATCH 00/27] security, efi: Add kernel lockdown

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Date:   Thu, 02 Nov 2017 22:04:19 +0000
From:   David Howells <dhowells@...hat.com>
To:     Mimi Zohar <zohar@...ux.vnet.ibm.com>, mcgrof@...nel.org
Cc:     dhowells@...hat.com, linux-security-module@...r.kernel.org,
        gnomes@...rguk.ukuu.org.uk, linux-efi@...r.kernel.org,
        matthew.garrett@...ula.com, gregkh@...uxfoundation.org,
        linux-kernel@...r.kernel.org, jforbes@...hat.com
Subject: Firmware signing -- Re: [PATCH 00/27] security, efi: Add kernel lockdown

Mimi Zohar <zohar@...ux.vnet.ibm.com> wrote:

> > Only validly signed device firmware may be loaded.
> 
> fw_get_filesystem_firmware() calls kernel_read_file_from_path() to
> read the firmware, which calls into the security hooks. Is there
> another place that validates the firmware signatures.  I'm not seeing
> which patch requires firmware to be signed?

Luis has a set of patches for this.  However, I'm not sure if that's going
anywhere at the moment.  Possibly I should remove this from the manpage for
the moment.

David