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From: Roberto Sassu <roberto.sassu@huawei.com>
To: <zohar@linux.ibm.com>, <dmitry.kasatkin@huawei.com>, <mjg59@google.com>
Cc: <linux-integrity@vger.kernel.org>, <linux-doc@vger.kernel.org>,
	<linux-security-module@vger.kernel.org>,
	<linux-kernel@vger.kernel.org>, <silviu.vlasceanu@huawei.com>,
	Roberto Sassu <roberto.sassu@huawei.com>,
	<stable@vger.kernel.org>
Subject: [PATCH 2/4] evm: reset status in evm_inode_post_setattr()
Date: Thu, 16 May 2019 18:12:55 +0200
Message-ID: <20190516161257.6640-2-roberto.sassu@huawei.com> (raw)
In-Reply-To: <20190516161257.6640-1-roberto.sassu@huawei.com>

This patch adds a call to evm_reset_status() in evm_inode_post_setattr(),
before security.evm is updated. The same is done in the other
evm_inode_post_* functions.

Fixes: 523b74b16bcbb ("evm: reset EVM status when file attributes change")
Signed-off-by: Roberto Sassu <roberto.sassu@huawei.com>
Cc: stable@vger.kernel.org
---
 security/integrity/evm/evm_main.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/security/integrity/evm/evm_main.c b/security/integrity/evm/evm_main.c
index b6d9f14bc234..b41c2d8a8834 100644
--- a/security/integrity/evm/evm_main.c
+++ b/security/integrity/evm/evm_main.c
@@ -512,8 +512,11 @@ void evm_inode_post_setattr(struct dentry *dentry, int ia_valid)
 	if (!evm_key_loaded())
 		return;
 
-	if (ia_valid & (ATTR_MODE | ATTR_UID | ATTR_GID))
+	if (ia_valid & (ATTR_MODE | ATTR_UID | ATTR_GID)) {
+		evm_reset_status(dentry->d_inode);
+
 		evm_update_evmxattr(dentry, NULL, NULL, 0);
+	}
 }
 
 /*
-- 
2.17.1


  reply index

Thread overview: 13+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-05-16 16:12 [PATCH 1/4] evm: check hash algorithm passed to init_desc() Roberto Sassu
2019-05-16 16:12 ` Roberto Sassu [this message]
2019-05-20 21:19   ` [PATCH 2/4] evm: reset status in evm_inode_post_setattr() Mimi Zohar
2019-05-16 16:12 ` [PATCH 3/4] ima: don't ignore INTEGRITY_UNKNOWN EVM status Roberto Sassu
     [not found]   ` <20190517001001.9BEF620848@mail.kernel.org>
2019-05-17  0:30     ` Mimi Zohar
2019-05-17  1:07       ` Sasha Levin
2019-05-20 21:20   ` Mimi Zohar
2019-05-21  7:26     ` Roberto Sassu
2019-05-21 11:48       ` Mimi Zohar
2019-05-16 16:12 ` [PATCH 4/4] ima: only audit failed appraisal verifications Roberto Sassu
2019-05-20 21:20   ` Mimi Zohar
2019-05-21  7:32     ` Roberto Sassu
2019-05-20 21:19 ` [PATCH 1/4] evm: check hash algorithm passed to init_desc() Mimi Zohar

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