AuxXxilium/linux_dsm_epyc7002
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linux_dsm_epyc7002/security/integrity
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Dan Carpenter 8433856947 evm: Fix a small race in init_desc() 
The IS_ERR_OR_NULL() function has two conditions and if we got really
unlucky we could hit a race where "ptr" started as an error pointer and
then was set to NULL.  Both conditions would be false even though the
pointer at the end was NULL.

This patch fixes the problem by ensuring that "*tfm" can only be NULL
or valid.  I have introduced a "tmp_tfm" variable to make that work.  I
also reversed a condition and pulled the code in one tab.

Reported-by: Roberto Sassu <roberto.sassu@huawei.com>
Fixes: 53de3b080d ("evm: Check also if *tfm is an error pointer in init_desc()")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Acked-by: Roberto Sassu <roberto.sassu@huawei.com>
Acked-by: Krzysztof Struczynski <krzysztof.struczynski@huawei.com>
Signed-off-by: Mimi Zohar <zohar@linux.ibm.com>
2020-05-14 19:55:54 -04:00
..
evm evm: Fix a small race in init_desc() 2020-05-14 19:55:54 -04:00
ima ima: Fix return value of ima_write_policy() 2020-05-07 21:36:31 -04:00
platform_certs EFI updates for v5.7: 2020-02-26 15:21:22 +01:00
digsig_asymmetric.c integrity: Remove duplicate pr_fmt definitions 2020-02-28 14:32:58 -05:00
digsig.c integrity: Remove duplicate pr_fmt definitions 2020-02-28 14:32:58 -05:00
iint.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 441 2019-06-05 17:37:17 +02:00
integrity_audit.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 441 2019-06-05 17:37:17 +02:00
integrity.h integrity: Remove duplicate pr_fmt definitions 2020-02-28 14:32:58 -05:00
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