From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id D6EA3C433EF for ; Wed, 8 Dec 2021 22:19:42 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S240985AbhLHWXM (ORCPT ); Wed, 8 Dec 2021 17:23:12 -0500 Received: from mx0b-001b2d01.pphosted.com ([148.163.158.5]:60132 "EHLO mx0a-001b2d01.pphosted.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S240640AbhLHWWO (ORCPT ); Wed, 8 Dec 2021 17:22:14 -0500 Received: from pps.filterd (m0098419.ppops.net [127.0.0.1]) by mx0b-001b2d01.pphosted.com (8.16.1.2/8.16.1.2) with SMTP id 1B8LSn2p012748; Wed, 8 Dec 2021 22:18:28 GMT DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=ibm.com; h=from : to : cc : subject : date : message-id : in-reply-to : references : mime-version : content-transfer-encoding; s=pp1; bh=Z69muX35ZlpobS3w1nUqcim7JCLDXKuabnrT4KTs25c=; b=F8tl392e5URV0dtY8331aiEi+S82ZopVsnuFU7mGH1WIKvHidcMwPtNpc8VjmJigZmYC rI8UJ9gDrqaU6ykzEP35BrdI/dwdLP8aCF4NMox39tB72g3P02eJui8kfzHyLTr/S+NH Y22H4sVBEMHjjHupEtEVQzz78gYrudjuofSqAApCHfXNW0yD4iBs8mjBf3urzK8FYi9K dTXHBDgjvKCkxBZ87OySGw+lWi9A5IcKyAtSP2k/vbyByrDnvqL434+RmtBfOucQ3VXW lIS/1F2R6GmkVs1HZLOR4YhFbeU0TYHVAMYcPIKTOfGIYqxvPhs0a8hjUAlqlwrgSLPM bw== Received: from pps.reinject (localhost [127.0.0.1]) by mx0b-001b2d01.pphosted.com with ESMTP id 3cu4n8rs76-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Wed, 08 Dec 2021 22:18:27 +0000 Received: from m0098419.ppops.net (m0098419.ppops.net [127.0.0.1]) by pps.reinject (8.16.0.43/8.16.0.43) with SMTP id 1B8MHcF8019153; Wed, 8 Dec 2021 22:18:27 GMT Received: from ppma01wdc.us.ibm.com (fd.55.37a9.ip4.static.sl-reverse.com [169.55.85.253]) by mx0b-001b2d01.pphosted.com with ESMTP id 3cu4n8rs70-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Wed, 08 Dec 2021 22:18:27 +0000 Received: from pps.filterd (ppma01wdc.us.ibm.com [127.0.0.1]) by ppma01wdc.us.ibm.com (8.16.1.2/8.16.1.2) with SMTP id 1B8MCSgD026184; Wed, 8 Dec 2021 22:18:26 GMT Received: from b01cxnp22035.gho.pok.ibm.com (b01cxnp22035.gho.pok.ibm.com [9.57.198.25]) by ppma01wdc.us.ibm.com with ESMTP id 3cqyybbhj2-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Wed, 08 Dec 2021 22:18:26 +0000 Received: from b01ledav001.gho.pok.ibm.com (b01ledav001.gho.pok.ibm.com [9.57.199.106]) by b01cxnp22035.gho.pok.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id 1B8MIOn619268004 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Wed, 8 Dec 2021 22:18:25 GMT Received: from b01ledav001.gho.pok.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id D06572806D; Wed, 8 Dec 2021 22:18:24 +0000 (GMT) Received: from b01ledav001.gho.pok.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id B5F032805C; Wed, 8 Dec 2021 22:18:24 +0000 (GMT) Received: from sbct-3.pok.ibm.com (unknown [9.47.158.153]) by b01ledav001.gho.pok.ibm.com (Postfix) with ESMTP; Wed, 8 Dec 2021 22:18:24 +0000 (GMT) From: Stefan Berger To: linux-integrity@vger.kernel.org Cc: zohar@linux.ibm.com, serge@hallyn.com, christian.brauner@ubuntu.com, containers@lists.linux.dev, dmitry.kasatkin@gmail.com, ebiederm@xmission.com, krzysztof.struczynski@huawei.com, roberto.sassu@huawei.com, mpeters@redhat.com, lhinds@redhat.com, lsturman@redhat.com, puiterwi@redhat.com, jejb@linux.ibm.com, jamjoom@us.ibm.com, linux-kernel@vger.kernel.org, paul@paul-moore.com, rgb@redhat.com, linux-security-module@vger.kernel.org, jmorris@namei.org, Stefan Berger Subject: [PATCH v5 09/16] ima: Only accept AUDIT rules for IMA non-init_ima_ns namespaces for now Date: Wed, 8 Dec 2021 17:18:11 -0500 Message-Id: <20211208221818.1519628-10-stefanb@linux.ibm.com> X-Mailer: git-send-email 2.31.1 In-Reply-To: <20211208221818.1519628-1-stefanb@linux.ibm.com> References: <20211208221818.1519628-1-stefanb@linux.ibm.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-TM-AS-GCONF: 00 X-Proofpoint-ORIG-GUID: kp63ZwRyZxl-pQkUUFDVgvj1liMFxCoU X-Proofpoint-GUID: tF9MeZTyNAwaqOQiYJh0e3xdlHFPLADK X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.205,Aquarius:18.0.790,Hydra:6.0.425,FMLib:17.11.62.513 definitions=2021-12-08_08,2021-12-08_01,2021-12-02_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 clxscore=1015 mlxlogscore=999 impostorscore=0 priorityscore=1501 adultscore=0 bulkscore=0 spamscore=0 mlxscore=0 malwarescore=0 lowpriorityscore=0 phishscore=0 suspectscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2110150000 definitions=main-2112080121 Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Only accept AUDIT rules for non-init_ima_ns namespaces rejecting all rules that require support for measuring, appraisal, and hashing. Signed-off-by: Stefan Berger --- security/integrity/ima/ima_policy.c | 10 ++++++++++ 1 file changed, 10 insertions(+) diff --git a/security/integrity/ima/ima_policy.c b/security/integrity/ima/ima_policy.c index 4d6d3a39f65e..747dca6131d6 100644 --- a/security/integrity/ima/ima_policy.c +++ b/security/integrity/ima/ima_policy.c @@ -1787,6 +1787,16 @@ static int ima_parse_rule(struct ima_namespace *ns, result = -EINVAL; break; } + + /* IMA namespace only accepts AUDIT rules */ + if (ns != &init_ima_ns) { + switch (entry->action) { + case MEASURE: + case APPRAISE: + case HASH: + result = -EINVAL; + } + } } if (!result && !ima_validate_rule(entry)) result = -EINVAL; -- 2.31.1