linux-kernel - [PATCH 5.1 59/85] ima: fix wrong signed policy requirement when not appraising

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Message-Id: <20190607153856.007058193@linuxfoundation.org>
Date:   Fri,  7 Jun 2019 17:39:44 +0200
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, Petr Vorel <pvorel@...e.cz>,
        Mimi Zohar <zohar@...ux.ibm.com>
Subject: [PATCH 5.1 59/85] ima: fix wrong signed policy requirement when not appraising

From: Petr Vorel <pvorel@...e.cz>

commit f40019475bbbe9b455e7fd4385fcf13896c492ca upstream.

Kernel booted just with ima_policy=tcb (not with
ima_policy=appraise_tcb) shouldn't require signed policy.

Regression found with LTP test ima_policy.sh.

Fixes: c52657d93b05 ("ima: refactor ima_init_policy()")
Cc: stable@...r.kernel.org  (linux-5.0)
Signed-off-by: Petr Vorel <pvorel@...e.cz>
Signed-off-by: Mimi Zohar <zohar@...ux.ibm.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>

---
 security/integrity/ima/ima_policy.c |    7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)

--- a/security/integrity/ima/ima_policy.c
+++ b/security/integrity/ima/ima_policy.c
@@ -498,10 +498,11 @@ static void add_rules(struct ima_rule_en
 
 			list_add_tail(&entry->list, &ima_policy_rules);
 		}
-		if (entries[i].action == APPRAISE)
+		if (entries[i].action == APPRAISE) {
 			temp_ima_appraise |= ima_appraise_flag(entries[i].func);
-		if (entries[i].func == POLICY_CHECK)
-			temp_ima_appraise |= IMA_APPRAISE_POLICY;
+			if (entries[i].func == POLICY_CHECK)
+				temp_ima_appraise |= IMA_APPRAISE_POLICY;
+		}
 	}
 }