From: Krzysztof Struczynski Date: Mon, 27 Apr 2020 10:28:59 +0000 (+0200) Subject: ima: Set again build_ima_appraise variable X-Git-Tag: v5.15~3586^2~6 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=b59fda449cf07f2db3be3a67142e6c000f5e8d79;p=platform%2Fkernel%2Flinux-starfive.git ima: Set again build_ima_appraise variable 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 Signed-off-by: Roberto Sassu Signed-off-by: Krzysztof Struczynski Signed-off-by: Mimi Zohar --- diff --git a/security/integrity/ima/ima_policy.c b/security/integrity/ima/ima_policy.c index ea9b991..ef7f68c 100644 --- a/security/integrity/ima/ima_policy.c +++ b/security/integrity/ima/ima_policy.c @@ -643,8 +643,14 @@ 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); + } } }