linux-kernel - Re: [PATCH v2 0/6] KEXEC_SIG with appended signature

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <YaZDGjKSaH2YKl/h@osiris>
Date:   Tue, 30 Nov 2021 16:28:26 +0100
From:   Heiko Carstens <hca@...ux.ibm.com>
To:     Michal Suchanek <msuchanek@...e.de>
Cc:     keyrings@...r.kernel.org, kexec@...ts.infradead.org,
        Philipp Rudo <prudo@...hat.com>,
        Mimi Zohar <zohar@...ux.ibm.com>,
        Nayna <nayna@...ux.vnet.ibm.com>, Rob Herring <robh@...nel.org>,
        linux-s390@...r.kernel.org, Vasily Gorbik <gor@...ux.ibm.com>,
        Lakshmi Ramasubramanian <nramas@...ux.microsoft.com>,
        Jessica Yu <jeyu@...nel.org>, linux-kernel@...r.kernel.org,
        David Howells <dhowells@...hat.com>,
        Christian Borntraeger <borntraeger@...ibm.com>,
        Luis Chamberlain <mcgrof@...nel.org>,
        Paul Mackerras <paulus@...ba.org>,
        Hari Bathini <hbathini@...ux.ibm.com>,
        Alexander Gordeev <agordeev@...ux.ibm.com>,
        linuxppc-dev@...ts.ozlabs.org,
        Frank van der Linden <fllinden@...zon.com>,
        Thiago Jung Bauermann <bauerman@...ux.ibm.com>,
        Daniel Axtens <dja@...ens.net>, buendgen@...ibm.com,
        Michael Ellerman <mpe@...erman.id.au>,
        Benjamin Herrenschmidt <benh@...nel.crashing.org>,
        Christian Borntraeger <borntraeger@...ux.ibm.com>,
        Herbert Xu <herbert@...dor.apana.org.au>,
        "David S. Miller" <davem@...emloft.net>,
        Dmitry Kasatkin <dmitry.kasatkin@...il.com>,
        James Morris <jmorris@...ei.org>,
        "Serge E. Hallyn" <serge@...lyn.com>,
        Sven Schnelle <svens@...ux.ibm.com>,
        Baoquan He <bhe@...hat.com>, linux-crypto@...r.kernel.org,
        linux-integrity@...r.kernel.org,
        linux-security-module@...r.kernel.org
Subject: Re: [PATCH v2 0/6] KEXEC_SIG with appended signature

On Thu, Nov 25, 2021 at 07:02:38PM +0100, Michal Suchanek wrote:
> Hello,
> 
> This is resend of the KEXEC_SIG patchset.
> 
> The first patch is new because it'a a cleanup that does not require any
> change to the module verification code.
> 
> The second patch is the only one that is intended to change any
> functionality.
> 
> The rest only deduplicates code but I did not receive any review on that
> part so I don't know if it's desirable as implemented.
> 
> The first two patches can be applied separately without the rest.
> 
> Thanks
> 
> Michal
> 
> 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                     | 11 +++++
>  arch/powerpc/kexec/elf_64.c              | 14 ++++++
>  arch/s390/kernel/machine_kexec_file.c    | 42 ++----------------
>  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 ++--------
>  11 files changed, 113 insertions(+), 85 deletions(-)

For all patches which touch s390:
Acked-by: Heiko Carstens <hca@...ux.ibm.com>