| From: |
| Mickaël Salaün <mic-AT-digikod.net> |
| To: |
| David Howells <dhowells-AT-redhat.com>, David Woodhouse <dwmw2-AT-infradead.org>, Jarkko Sakkinen <jarkko-AT-kernel.org> |
| Subject: |
| [PATCH v7 0/5] Enable root to update the blacklist keyring |
| Date: |
| Fri, 12 Mar 2021 18:12:27 +0100 |
| Message-ID: |
| <20210312171232.2681989-1-mic@digikod.net> |
| Cc: |
| Mickaël Salaün <mic-AT-digikod.net>, "David S . Miller" <davem-AT-davemloft.net>, Eric Snowberg <eric.snowberg-AT-oracle.com>, Herbert Xu <herbert-AT-gondor.apana.org.au>, James Morris <jmorris-AT-namei.org>, Mickaël Salaün <mic-AT-linux.microsoft.com>, Mimi Zohar <zohar-AT-linux.ibm.com>, "Serge E . Hallyn" <serge-AT-hallyn.com>, Tyler Hicks <tyhicks-AT-linux.microsoft.com>, keyrings-AT-vger.kernel.org, linux-crypto-AT-vger.kernel.org, linux-integrity-AT-vger.kernel.org, linux-kernel-AT-vger.kernel.org, linux-security-module-AT-vger.kernel.org |
| Archive-link: |
| Article |
This new patch series is a rebase on David Howells's and Eric Snowberg's
keys-cve-2020-26541-v3.
I successfully tested this patch series with the 186 entries from
https://uefi.org/sites/default/files/resources/dbxupdate_... (184
binary hashes and 2 certificates).
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.
This can be applied on top of David Howells's keys-cve-2020-26541-branch:
https://git.kernel.org/pub/scm/linux/kernel/git/dhowells/...
Previous patch series:
https://lore.kernel.org/lkml/20210210120410.471693-1-mic@...
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: ebd9c2ae369a45bdd9f8615484db09be58fc242b
--
2.30.2
