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| author | Krzysztof Struczynski <krzysztof.struczynski@huawei.com> | 2020-04-27 12:28:59 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2020-06-22 09:31:17 +0200 |
| commit | e131e70e2144b36ad0dd0d6b2f2c3ff866ce5604 (patch) | |
| tree | 7da91591d555ce526223700a464649e558522138 /security | |
| parent | 2600136eaee989e8a3c8dfcee2581ae238f98964 (diff) | |
| download | linux-stable-e131e70e2144b36ad0dd0d6b2f2c3ff866ce5604.tar.gz linux-stable-e131e70e2144b36ad0dd0d6b2f2c3ff866ce5604.tar.bz2 linux-stable-e131e70e2144b36ad0dd0d6b2f2c3ff866ce5604.zip | |
ima: Set again build_ima_appraise variable
[ Upstream commit b59fda449cf07f2db3be3a67142e6c000f5e8d79 ]
After adding the new add_rule() function in commit c52657d93b05
("ima: refactor ima_init_policy()"), all appraisal flags are added to the
temp_ima_appraise variable. Revert to the previous behavior instead of
removing build_ima_appraise, to benefit from the protection offered by
__ro_after_init.
The mentioned commit introduced a bug, as it makes all the flags
modifiable, while build_ima_appraise flags can be protected with
__ro_after_init.
Cc: stable@vger.kernel.org # 5.0.x
Fixes: c52657d93b05 ("ima: refactor ima_init_policy()")
Co-developed-by: Roberto Sassu <roberto.sassu@huawei.com>
Signed-off-by: Roberto Sassu <roberto.sassu@huawei.com>
Signed-off-by: Krzysztof Struczynski <krzysztof.struczynski@huawei.com>
Signed-off-by: Mimi Zohar <zohar@linux.ibm.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'security')
| -rw-r--r-- | security/integrity/ima/ima_policy.c | 10 |
1 files changed, 8 insertions, 2 deletions
diff --git a/security/integrity/ima/ima_policy.c b/security/integrity/ima/ima_policy.c index 86624b1331ef..558a7607bf93 100644 --- a/security/integrity/ima/ima_policy.c +++ b/security/integrity/ima/ima_policy.c @@ -590,8 +590,14 @@ static void add_rules(struct ima_rule_entry *entries, int count, list_add_tail(&entry->list, &ima_policy_rules); } - if (entries[i].action == APPRAISE) - temp_ima_appraise |= ima_appraise_flag(entries[i].func); + if (entries[i].action == APPRAISE) { + if (entries != build_appraise_rules) + temp_ima_appraise |= + ima_appraise_flag(entries[i].func); + else + build_ima_appraise |= + ima_appraise_flag(entries[i].func); + } } } |