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From: Roberto Sassu <roberto.sassu@huawei.com>
To: <zohar@linux.ibm.com>, <mjg59@google.com>
Cc: <linux-integrity@vger.kernel.org>,
	<linux-security-module@vger.kernel.org>,
	<linux-kernel@vger.kernel.org>, <silviu.vlasceanu@huawei.com>,
	Roberto Sassu <roberto.sassu@huawei.com>
Subject: [PATCH v2 12/12] ima: Don't remove security.ima if file must not be appraised
Date: Fri, 4 Sep 2020 11:26:43 +0200	[thread overview]
Message-ID: <20200904092643.20013-8-roberto.sassu@huawei.com> (raw)
In-Reply-To: <20200904092339.19598-1-roberto.sassu@huawei.com>

Files might come from a remote source and might have xattrs, including
security.ima. It should not be IMA task to decide whether security.ima
should be kept or not. This patch removes the removexattr() system
call in ima_inode_post_setattr().

Signed-off-by: Roberto Sassu <roberto.sassu@huawei.com>
Reviewed-by: Mimi Zohar <zohar@linux.ibm.com>
---
 security/integrity/ima/ima_appraise.c | 2 --
 1 file changed, 2 deletions(-)

diff --git a/security/integrity/ima/ima_appraise.c b/security/integrity/ima/ima_appraise.c
index 95c7a1fc0d01..2dbf0417f9e6 100644
--- a/security/integrity/ima/ima_appraise.c
+++ b/security/integrity/ima/ima_appraise.c
@@ -513,8 +513,6 @@ void ima_inode_post_setattr(struct dentry *dentry)
 		return;
 
 	action = ima_must_appraise(inode, MAY_ACCESS, POST_SETATTR);
-	if (!action)
-		__vfs_removexattr(dentry, XATTR_NAME_IMA);
 	iint = integrity_iint_find(inode);
 	if (iint) {
 		set_bit(IMA_CHANGE_ATTR, &iint->atomic_flags);
-- 
2.27.GIT


  parent reply	other threads:[~2020-09-04  9:31 UTC|newest]

Thread overview: 26+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-09-04  9:23 [PATCH v2 00/12] IMA/EVM fixes Roberto Sassu
2020-09-04  9:23 ` [PATCH v2 01/12] ima: Don't ignore errors from crypto_shash_update() Roberto Sassu
2020-09-07 15:03   ` Sasha Levin
2020-09-04  9:23 ` [PATCH v2 02/12] ima: Remove semicolon at the end of ima_get_binary_runtime_size() Roberto Sassu
2020-09-04  9:23 ` [PATCH v2 03/12] evm: Check size of security.evm before using it Roberto Sassu
2020-09-04  9:23 ` [PATCH v2 04/12] evm: Execute evm_inode_init_security() only when the HMAC key is loaded Roberto Sassu
2020-09-07 15:03   ` Sasha Levin
2020-09-16 16:15   ` Mimi Zohar
2020-09-04  9:26 ` [PATCH v2 05/12] evm: Load EVM key in ima_load_x509() to avoid appraisal Roberto Sassu
2020-09-04  9:26 ` [PATCH v2 06/12] evm: Refuse EVM_ALLOW_METADATA_WRITES only if the HMAC key is loaded Roberto Sassu
2020-09-04  9:26 ` [PATCH v2 07/12] evm: Introduce EVM_RESET_STATUS atomic flag Roberto Sassu
2020-09-17 12:01   ` Mimi Zohar
2020-09-17 17:36     ` Roberto Sassu
2020-09-17 17:47       ` Mimi Zohar
2020-09-04  9:26 ` [PATCH v2 08/12] evm: Allow xattr/attr operations for portable signatures if check fails Roberto Sassu
2020-09-17 12:32   ` Mimi Zohar
2020-09-04  9:26 ` [PATCH v2 09/12] evm: Allow setxattr() and setattr() if metadata digest won't change Roberto Sassu
2020-09-17 13:15   ` Mimi Zohar
2020-09-04  9:26 ` [PATCH v2 10/12] ima: Allow imasig requirement to be satisfied by EVM portable signatures Roberto Sassu
2020-09-04  9:26 ` [PATCH v2 11/12] ima: Introduce template field evmsig and write to field sig as fallback Roberto Sassu
2020-09-17 14:25   ` Mimi Zohar
2020-09-17 15:05     ` Roberto Sassu
2020-09-17 15:55       ` Mimi Zohar
2020-09-04  9:26 ` Roberto Sassu [this message]
2020-09-16 16:14 ` [PATCH v2 00/12] IMA/EVM fixes Mimi Zohar
2020-09-17 14:33   ` Mimi Zohar

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