linux-kernel - [PATCH 0/7] ima: carry the measurement list across kexec

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Date:	Thu,  4 Aug 2016 08:24:28 -0400
From:	Mimi Zohar <zohar@...ux.vnet.ibm.com>
To:	linux-security-module@...r.kernel.org
Cc:	Mimi Zohar <zohar@...ux.vnet.ibm.com>,
	linux-ima-devel@...ts.sourceforge.net,
	Dave Young <dyoung@...hat.com>, kexec@...ts.infradead.org,
	linuxppc-dev@...ts.ozlabs.org, linux-kernel@...r.kernel.org,
	Thiago Jung Bauermann <bauerman@...ux.vnet.ibm.com>
Subject: [PATCH 0/7] ima: carry the measurement list across kexec 

The TPM PCRs are only reset on a hard reboot.  In order to validate a
TPM's quote after a soft reboot (eg. kexec -e), the IMA measurement list
of the running kernel must be saved and then restored on the subsequent
boot.

The existing securityfs binary_runtime_measurements file conveniently
provides a serialized format of the IMA measurement list. This patch
set serializes the measurement list in this format and restores it.

This patch set pre-req's Thiago Bauermann's "kexec_file: Add buffer
hand-over for the next kernel" patch set* for actually carrying the
serialized measurement list across the kexec.

Mimi

*https://lists.infradead.org/pipermail/kexec/2016-June/016157.html

Mimi Zohar (6):
  ima: on soft reboot, restore the measurement list
  ima: permit duplicate measurement list entries
  ima: maintain memory size needed for serializing the measurement list
  ima: serialize the binary_runtime_measurements
  ima: store the builtin/custom template definitions in a list
  ima: support restoring multiple template formats

Thiago Jung Bauermann (1):
  ima: on soft reboot, save the measurement list

 include/linux/ima.h                   |  15 ++
 kernel/kexec_file.c                   |   3 +
 security/integrity/ima/Kconfig        |  12 ++
 security/integrity/ima/Makefile       |   1 +
 security/integrity/ima/ima.h          |  14 ++
 security/integrity/ima/ima_fs.c       |   2 +-
 security/integrity/ima/ima_init.c     |   2 +
 security/integrity/ima/ima_kexec.c    | 189 ++++++++++++++++++++++++
 security/integrity/ima/ima_main.c     |   1 +
 security/integrity/ima/ima_queue.c    |  72 +++++++++-
 security/integrity/ima/ima_template.c | 262 ++++++++++++++++++++++++++++++++--
 11 files changed, 556 insertions(+), 17 deletions(-)
 create mode 100644 security/integrity/ima/ima_kexec.c

-- 
2.1.0