From:   Michal Suchanek <msuchanek@suse.de>
To:     keyrings@vger.kernel.org, linux-crypto@vger.kernel.org,
        linux-integrity@vger.kernel.org
Cc:     Michal Suchanek <msuchanek@suse.de>, kexec@lists.infradead.org,
        Philipp Rudo <prudo@redhat.com>,
        Mimi Zohar <zohar@linux.ibm.com>,
        Nayna <nayna@linux.vnet.ibm.com>, Rob Herring <robh@kernel.org>,
        linux-s390@vger.kernel.org, Vasily Gorbik <gor@linux.ibm.com>,
        Lakshmi Ramasubramanian <nramas@linux.microsoft.com>,
        Heiko Carstens <hca@linux.ibm.com>,
        Jessica Yu <jeyu@kernel.org>, linux-kernel@vger.kernel.org,
        David Howells <dhowells@redhat.com>,
        Christian Borntraeger <borntraeger@de.ibm.com>,
        Luis Chamberlain <mcgrof@kernel.org>,
        Paul Mackerras <paulus@samba.org>,
        Hari Bathini <hbathini@linux.ibm.com>,
        Alexander Gordeev <agordeev@linux.ibm.com>,
        linuxppc-dev@lists.ozlabs.org,
        Frank van der Linden <fllinden@amazon.com>,
        Thiago Jung Bauermann <bauerman@linux.ibm.com>,
        Daniel Axtens <dja@axtens.net>, buendgen@de.ibm.com,
        Michael Ellerman <mpe@ellerman.id.au>,
        Benjamin Herrenschmidt <benh@kernel.crashing.org>,
        Christian Borntraeger <borntraeger@linux.ibm.com>,
        Herbert Xu <herbert@gondor.apana.org.au>,
        "David S. Miller" <davem@davemloft.net>,
        Dmitry Kasatkin <dmitry.kasatkin@gmail.com>,
        James Morris <jmorris@namei.org>,
        "Serge E. Hallyn" <serge@hallyn.com>,
        Sven Schnelle <svens@linux.ibm.com>,
        Baoquan He <bhe@redhat.com>,
        linux-security-module@vger.kernel.org
Subject: [PATCH v3 0/6] KEXEC_SIG with appended signature
Date:   Fri,  7 Jan 2022 12:53:44 +0100
Message-Id: <cover.1641555875.git.msuchanek@suse.de>
MIME-Version: 1.0
Content-Transfer-Encoding: 8bit
Precedence: bulk

Hello,

This is a refresh of the KEXEC_SIG series.

This adds KEXEC_SIG support on powerpc and deduplicates the code dealing
with appended signatures in the kernel.

powerpc supports IMA_KEXEC but that's an exception rather than the norm.
On the other hand, KEXEC_SIG is portable across platforms.

For distributions to have uniform security features across platforms one
option should be used on all platforms.

Thanks

Michal

Previous revision: https://lore.kernel.org/linuxppc-dev/cover.1637862358.git.msuchanek@suse.de/
Patched kernel tree: https://github.com/hramrach/kernel/tree/kexec_sig

Michal Suchanek (6):
  s390/kexec_file: Don't opencode appended signature check.
  powerpc/kexec_file: Add KEXEC_SIG support.
  kexec_file: Don't opencode appended signature verification.
  module: strip the signature marker in the verification function.
  module: Use key_being_used_for for log messages in
    verify_appended_signature
  module: Move duplicate mod_check_sig users code to mod_parse_sig

 arch/powerpc/Kconfig                     | 16 +++++++
 arch/powerpc/kexec/elf_64.c              | 14 ++++++
 arch/s390/Kconfig                        |  2 +-
 arch/s390/kernel/machine_kexec_file.c    | 43 ++----------------
 crypto/asymmetric_keys/asymmetric_type.c |  1 +
 include/linux/module_signature.h         |  1 +
 include/linux/verification.h             |  4 ++
 kernel/module-internal.h                 |  2 -
 kernel/module.c                          | 12 +++--
 kernel/module_signature.c                | 56 +++++++++++++++++++++++-
 kernel/module_signing.c                  | 33 +++++++-------
 security/integrity/ima/ima_modsig.c      | 22 ++--------
 12 files changed, 119 insertions(+), 87 deletions(-)

-- 
2.31.1