From mboxrd@z Thu Jan 1 00:00:00 1970 Return-path: Received: from mx1.redhat.com ([209.132.183.28]) by bombadil.infradead.org with esmtps (Exim 4.90_1 #2 (Red Hat Linux)) id 1gjiGL-0007IS-9R for kexec@lists.infradead.org; Wed, 16 Jan 2019 10:17:35 +0000 From: Kairui Song Subject: [PATCH v3 0/2] let kexec_file_load use platform keyring to verify the kernel image Date: Wed, 16 Jan 2019 18:16:52 +0800 Message-Id: <20190116101654.7288-1-kasong@redhat.com> MIME-Version: 1.0 List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "kexec" Errors-To: kexec-bounces+dwmw2=infradead.org@lists.infradead.org To: linux-kernel@vger.kernel.org Cc: jwboyer@fedoraproject.org, Kairui Song , ebiggers@google.com, dyoung@redhat.com, nayna@linux.ibm.com, kexec@lists.infradead.org, jmorris@namei.org, zohar@linux.ibm.com, dhowells@redhat.com, keyrings@vger.kernel.org, linux-integrity@vger.kernel.org, dwmw2@infradead.org, bauerman@linux.ibm.com, serge@hallyn.com This patch series adds a .platform_trusted_keys in system_keyring as the reference to .platform keyring in integrity subsystem, when platform keyring is being initialized it will be updated. So other component could use this keyring as well. This patch series also let kexec_file_load use platform keyring as fall back if it failed to verify the image against secondary keyring, make it possible to load kernel signed by third part key if third party key is imported in the firmware. After this patch kexec_file_load will be able to verify a signed PE bzImage using keys in platform keyring. Tested in a VM with locally signed kernel with pesign and imported the cert to EFI's MokList variable. Kairui Song (2): integrity, KEYS: add a reference to platform keyring kexec, KEYS: Make use of platform keyring for signature verify Update from V2: - Use IS_ENABLED in kexec_file_load to judge if platform_trusted_keys should be used for verifying image as suggested by Mimi Zohar Update from V1: - Make platform_trusted_keys static, and update commit message as suggested by Mimi Zohar - Always check if platform keyring is initialized before use it Kairui Song (2): integrity, KEYS: add a reference to platform keyring kexec, KEYS: Make use of platform keyring for signature verify arch/x86/kernel/kexec-bzimage64.c | 13 ++++++++++--- certs/system_keyring.c | 22 +++++++++++++++++++++- include/keys/system_keyring.h | 5 +++++ include/linux/verification.h | 1 + security/integrity/digsig.c | 6 ++++++ 5 files changed, 43 insertions(+), 4 deletions(-) -- 2.20.1 _______________________________________________ kexec mailing list kexec@lists.infradead.org http://lists.infradead.org/mailman/listinfo/kexec