[PATCH 0/7] ima/evm: Small enhancements
roberto.sassu at huawei.com
Fri Apr 9 11:43:06 UTC 2021
This patch set provides some small enhancements for IMA and EVM.
Patch 1 avoids measurement and audit when access to the file will be denied
by IMA itself.
Patch 2 introduces a new policy keyword meta_immutable to protect the label
transition during binary execution.
Patch 3-5 add new hard-coded policies aiming at producing measurement or
enforcing access to files that likely are provided by software vendors.
Patch 6 increases the crypto resistance of EVM by allowing the choice of
the hash algorithm for the HMAC.
Patch 7 adds two new values for the evm= option in the kernel command line
to facilitate the setup of EVM.
Roberto Sassu (7):
ima: Avoid measurement and audit if access to the file will be denied
ima: Add meta_immutable appraisal type
ima: Introduce exec_tcb and tmpfs policies
ima: Introduce appraise_exec_tcb and appraise_tmpfs policies
ima: Introduce appraise_exec_immutable policy
evm: Allow choice of hash algorithm for HMAC
evm: Extend evm= with allow_metadata_writes and complete values
Documentation/ABI/testing/ima_policy | 2 +-
.../admin-guide/kernel-parameters.txt | 36 +++++++-
security/integrity/evm/Kconfig | 34 +++++++
security/integrity/evm/evm.h | 2 +
security/integrity/evm/evm_crypto.c | 55 ++++++++++--
security/integrity/evm/evm_main.c | 29 ++++--
security/integrity/ima/ima_appraise.c | 9 ++
security/integrity/ima/ima_main.c | 20 +++--
security/integrity/ima/ima_policy.c | 90 ++++++++++++++-----
security/integrity/integrity.h | 4 +-
10 files changed, 232 insertions(+), 49 deletions(-)
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