[PATCH v8 0/5] Enable root to update the blacklist keyring

Mickaël Salaün
2021-07-12T17:03:40Z

Hi,

This new patch series is a rebase on v5.14-rc1 . David or Jarkko, if
it's still OK with you, could you please push this to linux-next?

I successfully tested this patch series with the 211 entries from
https://uefi.org/sites/default/files/resources/dbxupdate_x64.bin

The goal of these patches is to add a new configuration option to enable the
root user to load signed keys in the blacklist keyring. This keyring is useful
to "untrust" certificates or files. Enabling to safely update this keyring
without recompiling the kernel makes it more usable.

Previous patch series:
https://lore.kernel.org/lkml/20210312171232.2681989-1-mic@digikod.net/

Regards,

Mickaël Salaün (5):
tools/certs: Add print-cert-tbs-hash.sh
certs: Check that builtin blacklist hashes are valid
certs: Make blacklist_vet_description() more strict
certs: Factor out the blacklist hash creation
certs: Allow root user to append signed hashes to the blacklist
keyring

MAINTAINERS | 2 +
certs/.gitignore | 1 +
certs/Kconfig | 17 +-
certs/Makefile | 17 +-
certs/blacklist.c | 218 ++++++++++++++----
crypto/asymmetric_keys/x509_public_key.c | 3 +-
include/keys/system_keyring.h | 14 +-
scripts/check-blacklist-hashes.awk | 37 +++
.../platform_certs/keyring_handler.c | 26 +--
tools/certs/print-cert-tbs-hash.sh | 91 ++++++++
10 files changed, 346 insertions(+), 80 deletions(-)
create mode 100755 scripts/check-blacklist-hashes.awk
create mode 100755 tools/certs/print-cert-tbs-hash.sh

base-commit: e73f0f0ee7541171d89f2e2491130c7771ba58d3
--
2.32.0