From: Mimi Zohar <zohar@linux.ibm.com>
To: Lakshmi Ramasubramanian <nramas@linux.microsoft.com>,
stephen.smalley.work@gmail.com, casey@schaufler-ca.com
Cc: tyhicks@linux.microsoft.com, tusharsu@linux.microsoft.com,
sashal@kernel.org, jmorris@namei.org,
linux-integrity@vger.kernel.org, selinux@vger.kernel.org,
linux-security-module@vger.kernel.org,
linux-kernel@vger.kernel.org
Subject: Re: [PATCH] IMA: Handle early boot data measurement
Date: Tue, 25 Aug 2020 11:40:26 -0400 [thread overview]
Message-ID: <a7ea2da1f895ee3db4697c00804160acb6db656e.camel@linux.ibm.com> (raw)
In-Reply-To: <20200821231230.20212-1-nramas@linux.microsoft.com>
On Fri, 2020-08-21 at 16:12 -0700, Lakshmi Ramasubramanian wrote:
> The current implementation of early boot measurement in
> the IMA subsystem is very specific to asymmetric keys. It does not
> handle early boot measurement of data from other subsystems such as
> Linux Security Module (LSM), Device-Mapper, etc. As a result data,
> provided by these subsystems during system boot are not measured by IMA.
>
> Update the early boot key measurement to handle any early boot data.
> Refactor the code from ima_queue_keys.c to a new file ima_queue_data.c.
> Rename the kernel configuration CONFIG_IMA_QUEUE_EARLY_BOOT_KEYS to
> CONFIG_IMA_QUEUE_EARLY_BOOT_DATA so it can be used for enabling any
> early boot data measurement. Since measurement of asymmetric keys is
> the first consumer of early boot measurement, this kernel configuration
> is enabled if IMA_MEASURE_ASYMMETRIC_KEYS and SYSTEM_TRUSTED_KEYRING are
> both enabled.
>
> Update the IMA hook ima_measure_critical_data() to utilize early boot
> measurement support.
Please limit the changes in this patch to renaming the functions and/or
files. For example, adding "measure_payload_hash" should be a separate
patch, not hidden here.
Mimi
next prev parent reply other threads:[~2020-08-25 15:40 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-08-21 23:12 [PATCH] IMA: Handle early boot data measurement Lakshmi Ramasubramanian
2020-08-25 15:40 ` Mimi Zohar [this message]
2020-08-25 15:46 ` Lakshmi Ramasubramanian
2020-08-25 17:42 ` Mimi Zohar
2020-08-25 17:55 ` Lakshmi Ramasubramanian
2020-08-25 18:03 ` Mimi Zohar
2020-08-25 19:35 ` Lakshmi Ramasubramanian
2020-08-25 19:43 ` Mimi Zohar
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=a7ea2da1f895ee3db4697c00804160acb6db656e.camel@linux.ibm.com \
--to=zohar@linux.ibm.com \
--cc=casey@schaufler-ca.com \
--cc=jmorris@namei.org \
--cc=linux-integrity@vger.kernel.org \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-security-module@vger.kernel.org \
--cc=nramas@linux.microsoft.com \
--cc=sashal@kernel.org \
--cc=selinux@vger.kernel.org \
--cc=stephen.smalley.work@gmail.com \
--cc=tusharsu@linux.microsoft.com \
--cc=tyhicks@linux.microsoft.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