Re: [PATCH 03/27] Enforce module signatures if the kernel is locked down

On Fri, Mar 8, 2019 at 3:00 PM James Morris [off-list ref] wrote:

On Wed, 6 Mar 2019, Matthew Garrett wrote:

quoted

From: David Howells <dhowells@redhat.com>

If the kernel is locked down, require that all modules have valid
signatures that we can verify.

Perhaps note that this won't cover the case where folk are using DM-Verity
with a signed root hash for verifying kernel modules.

Mm. I can't see a terribly good way of doing this generically -
loadpin gives no indication to the module loading code that it comes
from a trusted source. Would making the lockdown/module signature
enforcement a separate config option be reasonable?