Re: [PATCH] certs: Reference revocation list for all keyrings

[Mimi Zohar]

On Tue, 2023-01-17 at 12:15 -0500, Eric Snowberg wrote:
> Systems booted with shim have a Forbidden Signature Database called mokx.
> During boot, hashes and certs contained within the mokx are loaded into the
> blacklist keyring.  When calling verify_pkcs7_message_sig the contents of
> the blacklist keyring (or revocation list) are referenced when validating
> keys on the platform keyring. Currently, when validating against the
> secondary or builtin keyrings, the revocation list is not referenced.  Move
> up the check to allow the revocation list to be used with all keyrings,
> including the secondary and builtin, allowing the system owner to take
> corrective action should a vulnerability be found within keys contained
> within either keyring.
> 
> Signed-off-by: Eric Snowberg <eric.snowberg@xxxxxxxxxx>

Reviewed-by: Mimi Zohar <zohar@xxxxxxxxxxxxx>