From: Mimi Zohar <zohar@linux.ibm.com>
To: Nayna Jain <nayna@linux.ibm.com>,
linuxppc-dev@ozlabs.org, linux-efi@vger.kernel.org,
linux-integrity@vger.kernel.org
Cc: Ard Biesheuvel <ard.biesheuvel@linaro.org>,
Eric Ricther <erichte@linux.ibm.com>,
Prakhar Srivastava <prsriva02@gmail.com>,
linux-kernel@vger.kernel.org,
Claudio Carvalho <cclaudio@linux.ibm.com>,
Matthew Garret <matthew.garret@nebula.com>,
Lakshmi Ramasubramanian <nramas@linux.microsoft.com>,
Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
Paul Mackerras <paulus@samba.org>, Jeremy Kerr <jk@ozlabs.org>,
Elaine Palmer <erpalmer@us.ibm.com>,
Oliver O'Halloran <oohall@gmail.com>,
George Wilson <gcwilson@linux.ibm.com>
Subject: Re: [PATCH v9 0/8] powerpc: Enabling IMA arch specific secure boot policies
Date: Mon, 28 Oct 2019 08:10:43 -0400 [thread overview]
Message-ID: <1572264643.4532.244.camel@linux.ibm.com> (raw)
In-Reply-To: <20191024034717.70552-1-nayna@linux.ibm.com>
On Wed, 2019-10-23 at 22:47 -0500, Nayna Jain wrote:
> This patchset extends the previous version[1] by adding support for
> checking against a blacklist of binary hashes.
>
> The IMA subsystem supports custom, built-in, arch-specific policies to
> define the files to be measured and appraised. These policies are honored
> based on priority, where arch-specific policy is the highest and custom
> is the lowest.
>
> PowerNV system uses a Linux-based bootloader to kexec the OS. The
> bootloader kernel relies on IMA for signature verification of the OS
> kernel before doing the kexec. This patchset adds support for powerpc
> arch-specific IMA policies that are conditionally defined based on a
> system's secure boot and trusted boot states. The OS secure boot and
> trusted boot states are determined via device-tree properties.
>
> The verification needs to be performed only for binaries that are not
> blacklisted. The kernel currently only checks against the blacklist of
> keys. However, doing so results in blacklisting all the binaries that
> are signed by the same key. In order to prevent just one particular
> binary from being loaded, it must be checked against a blacklist of
> binary hashes. This patchset also adds support to IMA for checking
> against a hash blacklist for files. signed by appended signature.
>
> [1] http://patchwork.ozlabs.org/cover/1149262/
Thanks, Nayna.
Please feel free to add my Signed-off-by tag on patches (2, 4, 5, 7 &
8).
thanks,
Mimi
prev parent reply other threads:[~2019-10-28 12:14 UTC|newest]
Thread overview: 29+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-10-24 3:47 [PATCH v9 0/8] powerpc: Enabling IMA arch specific secure boot policies Nayna Jain
2019-10-24 3:47 ` [PATCH v9 1/8] powerpc: detect the secure boot mode of the system Nayna Jain
2019-10-24 17:26 ` Lakshmi Ramasubramanian
2019-10-25 16:49 ` Nayna Jain
2019-10-24 3:47 ` [PATCH v9 2/8] powerpc/ima: add support to initialize ima policy rules Nayna Jain
2019-10-24 17:35 ` Lakshmi Ramasubramanian
2019-10-25 17:02 ` Nayna Jain
2019-10-25 18:03 ` Lakshmi Ramasubramanian
2019-10-28 23:42 ` Michael Ellerman
2019-10-26 23:52 ` Mimi Zohar
2019-10-28 11:54 ` Mimi Zohar
2019-10-24 3:47 ` [PATCH v9 3/8] powerpc: detect the trusted boot state of the system Nayna Jain
2019-10-24 17:38 ` Lakshmi Ramasubramanian
2019-10-25 16:50 ` Nayna Jain
2019-10-24 3:47 ` [PATCH v9 4/8] powerpc/ima: define trusted boot policy Nayna Jain
2019-10-24 17:40 ` Lakshmi Ramasubramanian
2019-10-24 3:47 ` [PATCH v9 5/8] ima: make process_buffer_measurement() generic Nayna Jain
2019-10-24 15:20 ` Lakshmi Ramasubramanian
2019-10-25 17:24 ` Nayna Jain
2019-10-25 17:32 ` Lakshmi Ramasubramanian
2019-10-27 0:13 ` Mimi Zohar
2019-10-30 15:22 ` Lakshmi Ramasubramanian
2019-10-30 16:35 ` Mimi Zohar
2019-10-24 3:47 ` [PATCH v9 6/8] certs: add wrapper function to check blacklisted binary hash Nayna Jain
2019-10-24 3:47 ` [PATCH v9 7/8] ima: check against blacklisted hashes for files with modsig Nayna Jain
2019-10-24 17:48 ` Lakshmi Ramasubramanian
2019-10-25 17:36 ` Nayna Jain
2019-10-24 3:47 ` [PATCH v9 8/8] powerpc/ima: update ima arch policy to check for blacklist Nayna Jain
2019-10-28 12:10 ` Mimi Zohar [this message]
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=1572264643.4532.244.camel@linux.ibm.com \
--to=zohar@linux.ibm.com \
--cc=ard.biesheuvel@linaro.org \
--cc=cclaudio@linux.ibm.com \
--cc=erichte@linux.ibm.com \
--cc=erpalmer@us.ibm.com \
--cc=gcwilson@linux.ibm.com \
--cc=gregkh@linuxfoundation.org \
--cc=jk@ozlabs.org \
--cc=linux-efi@vger.kernel.org \
--cc=linux-integrity@vger.kernel.org \
--cc=linux-kernel@vger.kernel.org \
--cc=linuxppc-dev@ozlabs.org \
--cc=matthew.garret@nebula.com \
--cc=nayna@linux.ibm.com \
--cc=nramas@linux.microsoft.com \
--cc=oohall@gmail.com \
--cc=paulus@samba.org \
--cc=prsriva02@gmail.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).