linux/security/integrity
Roberto Sassu aa2ead71d9 evm: Load EVM key in ima_load_x509() to avoid appraisal
The public builtin keys do not need to be appraised by IMA as the
restriction on the IMA/EVM trusted keyrings ensures that a key can be
loaded only if it is signed with a key on the builtin or secondary
keyrings.

However, when evm_load_x509() is called, appraisal is already enabled and
a valid IMA signature must be added to the EVM key to pass verification.

Since the restriction is applied on both IMA and EVM trusted keyrings, it
is safe to disable appraisal also when the EVM key is loaded. This patch
calls evm_load_x509() inside ima_load_x509() if CONFIG_IMA_LOAD_X509 is
enabled, which crosses the normal IMA and EVM boundary.

Signed-off-by: Roberto Sassu <roberto.sassu@huawei.com>
Signed-off-by: Mimi Zohar <zohar@linux.ibm.com>
2021-05-21 12:47:04 -04:00
..
evm evm: Execute evm_inode_init_security() only when an HMAC key is loaded 2021-05-21 12:46:58 -04:00
ima evm: Load EVM key in ima_load_x509() to avoid appraisal 2021-05-21 12:47:04 -04:00
platform_certs integrity: Load mokx variables into the blacklist keyring 2021-03-11 16:34:48 +00:00
digsig_asymmetric.c ima: Support EC keys for signature verification 2021-03-26 19:41:59 +11:00
digsig.c ima: enable loading of build time generated key on .ima keyring 2021-04-09 10:40:20 -04:00
iint.c evm: Load EVM key in ima_load_x509() to avoid appraisal 2021-05-21 12:47:04 -04:00
integrity_audit.c integrity: Use current_uid() in integrity_audit_message() 2020-08-31 17:46:50 -04:00
integrity.h crypto: sha - split sha.h into sha1.h and sha2.h 2020-11-20 14:45:33 +11:00
Kconfig powerpc: Load firmware trusted keys/hashes into kernel keyring 2019-11-13 00:33:23 +11:00
Makefile powerpc: Load firmware trusted keys/hashes into kernel keyring 2019-11-13 00:33:23 +11:00