From: Eric Snowberg <eric.snowberg@oracle.com>
To: keyrings@vger.kernel.org, linux-integrity@vger.kernel.org,
zohar@linux.ibm.com, dhowells@redhat.com, dwmw2@infradead.org,
herbert@gondor.apana.org.au, davem@davemloft.net,
jarkko@kernel.org, jmorris@namei.org, serge@hallyn.com
Cc: eric.snowberg@oracle.com, keescook@chromium.org,
gregkh@linuxfoundation.org, torvalds@linux-foundation.org,
scott.branden@broadcom.com, weiyongjun1@huawei.com,
nayna@linux.ibm.com, ebiggers@google.com, ardb@kernel.org,
nramas@linux.microsoft.com, lszubowi@redhat.com,
linux-kernel@vger.kernel.org, linux-crypto@vger.kernel.org,
linux-security-module@vger.kernel.org,
James.Bottomley@HansenPartnership.com, pjones@redhat.com,
glin@suse.com, konrad.wilk@oracle.com
Subject: [PATCH RFC 10/12] integrity: add new keyring handler
Date: Tue, 6 Jul 2021 22:44:01 -0400 [thread overview]
Message-ID: <20210707024403.1083977-11-eric.snowberg@oracle.com> (raw)
In-Reply-To: <20210707024403.1083977-1-eric.snowberg@oracle.com>
Add a new keyring handler for the mok keyring. If the Secondary trusted
keyring is enabled and the end-user trusts the MOK keys, this new
keyring handler is used.
Signed-off-by: Eric Snowberg <eric.snowberg@oracle.com>
---
.../integrity/platform_certs/keyring_handler.c | 17 ++++++++++++++++-
.../integrity/platform_certs/keyring_handler.h | 5 +++++
security/integrity/platform_certs/load_uefi.c | 4 ++--
3 files changed, 23 insertions(+), 3 deletions(-)
diff --git a/security/integrity/platform_certs/keyring_handler.c b/security/integrity/platform_certs/keyring_handler.c
index 5604bd57c990..b6daeb1e3de5 100644
--- a/security/integrity/platform_certs/keyring_handler.c
+++ b/security/integrity/platform_certs/keyring_handler.c
@@ -66,7 +66,7 @@ static __init void uefi_revocation_list_x509(const char *source,
/*
* Return the appropriate handler for particular signature list types found in
- * the UEFI db and MokListRT tables.
+ * the UEFI db tables.
*/
__init efi_element_handler_t get_handler_for_db(const efi_guid_t *sig_type)
{
@@ -75,6 +75,21 @@ __init efi_element_handler_t get_handler_for_db(const efi_guid_t *sig_type)
return 0;
}
+/*
+ * Return the appropriate handler for particular signature list types found in
+ * the MokListRT tables.
+ */
+__init efi_element_handler_t get_handler_for_mok(const efi_guid_t *sig_type)
+{
+ if (efi_guidcmp(*sig_type, efi_cert_x509_guid) == 0) {
+ if (IS_ENABLED(CONFIG_SECONDARY_TRUSTED_KEYRING) && trust_moklist())
+ return add_to_mok_keyring;
+ else
+ return add_to_platform_keyring;
+ }
+ return 0;
+}
+
/*
* Return the appropriate handler for particular signature list types found in
* the UEFI dbx and MokListXRT tables.
diff --git a/security/integrity/platform_certs/keyring_handler.h b/security/integrity/platform_certs/keyring_handler.h
index 2462bfa08fe3..284558f30411 100644
--- a/security/integrity/platform_certs/keyring_handler.h
+++ b/security/integrity/platform_certs/keyring_handler.h
@@ -24,6 +24,11 @@ void blacklist_binary(const char *source, const void *data, size_t len);
*/
efi_element_handler_t get_handler_for_db(const efi_guid_t *sig_type);
+/*
+ * Return the handler for particular signature list types found in the mok.
+ */
+efi_element_handler_t get_handler_for_mok(const efi_guid_t *sig_type);
+
/*
* Return the handler for particular signature list types found in the dbx.
*/
diff --git a/security/integrity/platform_certs/load_uefi.c b/security/integrity/platform_certs/load_uefi.c
index 94faa4b32441..f021dd81f080 100644
--- a/security/integrity/platform_certs/load_uefi.c
+++ b/security/integrity/platform_certs/load_uefi.c
@@ -94,7 +94,7 @@ static int __init load_moklist_certs(void)
rc = parse_efi_signature_list("UEFI:MokListRT (MOKvar table)",
mokvar_entry->data,
mokvar_entry->data_size,
- get_handler_for_db);
+ get_handler_for_mok);
/* All done if that worked. */
if (!rc)
return rc;
@@ -109,7 +109,7 @@ static int __init load_moklist_certs(void)
mok = get_cert_list(L"MokListRT", &mok_var, &moksize, &status);
if (mok) {
rc = parse_efi_signature_list("UEFI:MokListRT",
- mok, moksize, get_handler_for_db);
+ mok, moksize, get_handler_for_mok);
kfree(mok);
if (rc)
pr_err("Couldn't parse MokListRT signatures: %d\n", rc);
--
2.18.4
next prev parent reply other threads:[~2021-07-07 2:45 UTC|newest]
Thread overview: 30+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-07-07 2:43 [PATCH RFC 00/12] Enroll kernel keys thru MOK Eric Snowberg
2021-07-07 2:43 ` [PATCH RFC 01/12] KEYS: Add KEY_ALLOC_BYPASS_RESTRICTION option to key_move Eric Snowberg
2021-07-07 2:43 ` [PATCH RFC 02/12] KEYS: Allow unrestricted keys to be moved to the secondary keyring Eric Snowberg
2021-07-07 2:43 ` [PATCH RFC 03/12] KEYS: CA link restriction Eric Snowberg
2021-07-07 2:43 ` [PATCH RFC 04/12] integrity: add integrity_destroy_keyring Eric Snowberg
2021-07-07 2:43 ` [PATCH RFC 05/12] integrity: Introduce mok keyring Eric Snowberg
2021-07-07 19:31 ` Linus Torvalds
2021-07-07 21:26 ` Jarkko Sakkinen
2021-07-07 22:32 ` Eric Snowberg
2021-07-07 2:43 ` [PATCH RFC 06/12] integrity: Trust mok keys if MokListTrustedRT found Eric Snowberg
2021-07-07 2:43 ` [PATCH RFC 07/12] integrity: add add_to_mok_keyring Eric Snowberg
2021-07-07 2:43 ` [PATCH RFC 08/12] integrity: restrict INTEGRITY_KEYRING_MOK to restrict_link_by_secondary_trusted_or_ca Eric Snowberg
2021-07-07 2:44 ` [PATCH RFC 09/12] integrity: accessor function to get trust_moklist Eric Snowberg
2021-07-07 2:44 ` Eric Snowberg [this message]
2021-07-07 2:44 ` [PATCH RFC 11/12] integrity: move keys from the mok keyring into the secondary keyring Eric Snowberg
2021-07-07 2:44 ` [PATCH RFC 12/12] integrity: Suppress error message for keys added to the mok keyring Eric Snowberg
2021-07-07 6:46 ` [PATCH RFC 00/12] Enroll kernel keys thru MOK Christoph Hellwig
2021-07-07 16:23 ` Eric Snowberg
2021-07-07 16:28 ` Christoph Hellwig
2021-07-07 16:45 ` Eric Snowberg
2021-07-07 12:39 ` Mimi Zohar
2021-07-07 16:28 ` Eric Snowberg
2021-07-07 17:00 ` Mimi Zohar
2021-07-07 22:10 ` Eric Snowberg
2021-07-08 13:56 ` Mimi Zohar
2021-07-08 17:59 ` Eric Snowberg
2021-07-08 19:31 ` Mimi Zohar
2021-07-08 23:17 ` Eric Snowberg
2021-07-09 1:10 ` Mimi Zohar
2021-07-09 15:59 ` Nayna
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