From patchwork Tue Sep 7 16:01:05 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Eric Snowberg X-Patchwork-Id: 12479045 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-18.8 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER, INCLUDES_PATCH,MAILING_LIST_MULTI,MSGID_FROM_MTA_HEADER,SPF_HELO_NONE, SPF_PASS,USER_AGENT_GIT autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 2DBFFC4321E for ; Tue, 7 Sep 2021 16:02:21 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 110AB60F01 for ; Tue, 7 Sep 2021 16:02:21 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S235635AbhIGQDX (ORCPT ); Tue, 7 Sep 2021 12:03:23 -0400 Received: from mx0b-00069f02.pphosted.com ([205.220.177.32]:40720 "EHLO mx0b-00069f02.pphosted.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S234102AbhIGQDV (ORCPT ); Tue, 7 Sep 2021 12:03:21 -0400 Received: from pps.filterd (m0246631.ppops.net [127.0.0.1]) by mx0b-00069f02.pphosted.com (8.16.1.2/8.16.1.2) with SMTP id 187EfWEt026869; Tue, 7 Sep 2021 16:01:52 GMT DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=oracle.com; h=from : to : cc : subject : date : message-id : in-reply-to : references : content-type : mime-version; s=corp-2021-07-09; bh=bIS+ZsQcDbm18vUWg6MnbErxHbzJu23cwjgvnTlJmNs=; b=kQZko1HSqjVgpRIEI971jp9kIa0Hz6AXulfBj1k34g68WjgQIAnY4DFufWXl/nKkeoGt RADl+s90ifxSzyZ2caG5Y9iQc2u07xJGCE7jgcVAFv7ofBARYeddZaUaGNRxKlSxFRhd 16RNX0jPhIY0I1txo0r0dJYfekNohrQL+730Zu8EVwQv/h9VMa0E2LqhSF5Pkqtm3h9c 2ltEZfadJckjTftCoGG0snS+UDXxPeDdNyg/uWUbb6nJIUrcI2mEMz1jp4vUDj/rEHZ5 F8wKCWaFjtbdLK60hspuB/905gUb9gtI0IYP7Lrwjv/prEp7HIxpApNa55G2YDAbWJlt cw== DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=oracle.com; h=from : to : cc : subject : date : message-id : in-reply-to : references : content-type : mime-version; s=corp-2020-01-29; bh=bIS+ZsQcDbm18vUWg6MnbErxHbzJu23cwjgvnTlJmNs=; b=q9aXjfpLizwvOodplSfcsgdzYiOBfg90i/KxJ/YEEjpR7iuFGJg27ai/mv2qULzIeMab HafcEB00HBE9zD5GF4gcYnNxZ3/YxqjuOWVedD0wnx/qRiiAApcV7FsuBunqQJQgiCn+ 8n1qmQGHjG+1Ih8VyYceuSpnP40oLwwXb/S+8Icj9uX18QaBL4BpVw2BbtpB5F6cd1n0 yLtIAgQfKXu70IuEqIvpGwRv+NbPZhodQGWYdd6Nilk9B8XOv/kuXNEv8J266VdQr2b7 MEldU5FDVAxzaUwoqg306sgBkNp5G2wjB3drPOqQR/XIIPYxtvs2CCbyiKfUHMo8OzSe aQ== Received: from aserp3020.oracle.com (aserp3020.oracle.com [141.146.126.70]) by mx0b-00069f02.pphosted.com with ESMTP id 3awq29jg7x-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Tue, 07 Sep 2021 16:01:51 +0000 Received: from pps.filterd (aserp3020.oracle.com [127.0.0.1]) by aserp3020.oracle.com (8.16.0.42/8.16.0.42) with SMTP id 187G03S9185879; Tue, 7 Sep 2021 16:01:44 GMT Received: from nam11-dm6-obe.outbound.protection.outlook.com (mail-dm6nam11lp2176.outbound.protection.outlook.com [104.47.57.176]) by aserp3020.oracle.com with ESMTP id 3av0m4t4vv-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Tue, 07 Sep 2021 16:01:44 +0000 ARC-Seal: i=1; a=rsa-sha256; s=arcselector9901; d=microsoft.com; cv=none; b=fy7cd5aV6Z8P7yqKnJbm1so+CEJsFN1bcBzxizj8fifrQPx4NlaRoYGhOxm6jZmRGAK3xTvn3MDrLgofEB9sDwKiGtPL95+yLStfUyJLgDTf+3RNsEDD//yYlDKE17vo4K/bFv8I29b03GnqaN4F4Uq5HVklZTDK2j4l6MOBBC32w/ncrTbFhl/PaGLEd3pvx3R4EKHSg+KVVNllbSXciqTdMRerTDZyy+AXNY3J6OXhrC9HPNXvBkU23mZb00Zc3aoD7GDoJIRsgCQSKaS0sqlkf6WO5WEdSju0oqFlp9ICjA1tzFQfnPWu+Rveehu5VbsQSFIAUH7nOZRCjGegGw== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=microsoft.com; s=arcselector9901; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version; bh=bIS+ZsQcDbm18vUWg6MnbErxHbzJu23cwjgvnTlJmNs=; b=EKT0//IgNsKMTnrVYe9hOQcE8rF2kQZt3Z55auvGLURtGBCk0v622Z2ypejbqSCr18oQBU5PaCvyZkPZOW29LlgtxiiYBW7yUiCBr/u1cO4KK751YmmpRPrpowwFWe/H//Zl6yl1yywohfSnTfHF+6zTOK+zAIG5PfM90cahlLXIV3nndyQoXdG7bQN1w1o/EVdL5j3UOb14qClGNt7UAehqW/ZD/HNFaNtJQUD/ILy+L9f27tbS6Ah9f20DKnU7kWfc3AN5foC7MB5k4TR+GcljDxRmI1SdIoC7gVvrRWuNEbMYQbggF2R0EG86idBZyrujrRvS8lcq6rVqmX07FA== ARC-Authentication-Results: i=1; mx.microsoft.com 1; spf=pass smtp.mailfrom=oracle.com; dmarc=pass action=none header.from=oracle.com; dkim=pass header.d=oracle.com; arc=none DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=oracle.onmicrosoft.com; s=selector2-oracle-onmicrosoft-com; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-SenderADCheck; bh=bIS+ZsQcDbm18vUWg6MnbErxHbzJu23cwjgvnTlJmNs=; b=tSBkagkwvtLrAA+KTsK5n7P0dOp4J1irQce+azD8HuCfH8VchODtVqa3F8ai1YIpgAv6d6OwK5FQki/6IV5D/d295+ySj1mPOtBuk9hRtMfuzw7vlAeyyO1OVR3TOhnqFFUxC/cA7lNFbAKjqTJ/ynfcDBOF7lYI5MF8DbDL+ik= Authentication-Results: vger.kernel.org; dkim=none (message not signed) header.d=none;vger.kernel.org; dmarc=none action=none header.from=oracle.com; Received: from CH2PR10MB4150.namprd10.prod.outlook.com (2603:10b6:610:ac::13) by CH0PR10MB5004.namprd10.prod.outlook.com (2603:10b6:610:de::12) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.4500.14; Tue, 7 Sep 2021 16:01:41 +0000 Received: from CH2PR10MB4150.namprd10.prod.outlook.com ([fe80::340c:c4d9:1efa:5bc7]) by CH2PR10MB4150.namprd10.prod.outlook.com ([fe80::340c:c4d9:1efa:5bc7%8]) with mapi id 15.20.4478.025; Tue, 7 Sep 2021 16:01:41 +0000 From: Eric Snowberg To: keyrings@vger.kernel.org, linux-integrity@vger.kernel.org, zohar@linux.ibm.com, dhowells@redhat.com, dwmw2@infradead.org, herbert@gondor.apana.org.au, davem@davemloft.net, jarkko@kernel.org, jmorris@namei.org, serge@hallyn.com Cc: eric.snowberg@oracle.com, keescook@chromium.org, gregkh@linuxfoundation.org, torvalds@linux-foundation.org, scott.branden@broadcom.com, weiyongjun1@huawei.com, nayna@linux.ibm.com, ebiggers@google.com, ardb@kernel.org, nramas@linux.microsoft.com, lszubowi@redhat.com, linux-kernel@vger.kernel.org, linux-crypto@vger.kernel.org, linux-security-module@vger.kernel.org, James.Bottomley@HansenPartnership.com, pjones@redhat.com, konrad.wilk@oracle.com Subject: [PATCH v5 07/12] KEYS: Introduce link restriction to include builtin, secondary and machine keys Date: Tue, 7 Sep 2021 12:01:05 -0400 Message-Id: <20210907160110.2699645-8-eric.snowberg@oracle.com> X-Mailer: git-send-email 2.18.4 In-Reply-To: <20210907160110.2699645-1-eric.snowberg@oracle.com> References: <20210907160110.2699645-1-eric.snowberg@oracle.com> X-ClientProxiedBy: BY3PR05CA0023.namprd05.prod.outlook.com (2603:10b6:a03:254::28) To CH2PR10MB4150.namprd10.prod.outlook.com (2603:10b6:610:ac::13) MIME-Version: 1.0 Received: from localhost.us.oracle.com (148.87.23.13) by BY3PR05CA0023.namprd05.prod.outlook.com (2603:10b6:a03:254::28) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.4500.4 via Frontend Transport; Tue, 7 Sep 2021 16:01:39 +0000 X-MS-PublicTrafficType: Email X-MS-Office365-Filtering-Correlation-Id: 366f831a-4162-4cc7-78d3-08d97218c856 X-MS-TrafficTypeDiagnostic: CH0PR10MB5004: X-MS-Exchange-Transport-Forked: True X-Microsoft-Antispam-PRVS: X-MS-Oob-TLC-OOBClassifiers: OLM:7691; X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0; X-Microsoft-Antispam-Message-Info: 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 X-Forefront-Antispam-Report: CIP:255.255.255.255;CTRY:;LANG:en;SCL:1;SRV:;IPV:NLI;SFV:NSPM;H:CH2PR10MB4150.namprd10.prod.outlook.com;PTR:;CAT:NONE;SFS:(366004)(6486002)(1076003)(66556008)(66946007)(508600001)(66476007)(8676002)(921005)(8936002)(44832011)(5660300002)(186003)(26005)(52116002)(4326008)(7416002)(107886003)(7696005)(36756003)(86362001)(316002)(2906002)(956004)(2616005)(6666004)(38350700002)(38100700002);DIR:OUT;SFP:1101; X-MS-Exchange-AntiSpam-MessageData-ChunkCount: 1 X-MS-Exchange-AntiSpam-MessageData-0: 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 X-OriginatorOrg: oracle.com X-MS-Exchange-CrossTenant-Network-Message-Id: 366f831a-4162-4cc7-78d3-08d97218c856 X-MS-Exchange-CrossTenant-AuthSource: CH2PR10MB4150.namprd10.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-OriginalArrivalTime: 07 Sep 2021 16:01:41.7976 (UTC) X-MS-Exchange-CrossTenant-FromEntityHeader: Hosted X-MS-Exchange-CrossTenant-Id: 4e2c6054-71cb-48f1-bd6c-3a9705aca71b X-MS-Exchange-CrossTenant-MailboxType: HOSTED X-MS-Exchange-CrossTenant-UserPrincipalName: c0vlJApVJOFoZlpwsOJpA6+ZDFLq2QKonjhtz8Ik2++oXd0i3h6kjTWklLX3zSzaA/e/oOvMLCnO0f/f/mESX94d4AxeA0TsnFfGtT823wI= X-MS-Exchange-Transport-CrossTenantHeadersStamped: CH0PR10MB5004 X-Proofpoint-Virus-Version: vendor=nai engine=6300 definitions=10099 signatures=668682 X-Proofpoint-Spam-Details: rule=notspam policy=default score=0 mlxlogscore=999 adultscore=0 phishscore=0 bulkscore=0 suspectscore=0 spamscore=0 mlxscore=0 malwarescore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2108310000 definitions=main-2109070105 X-Proofpoint-ORIG-GUID: h3uXkCcX8QQwPnEIfzmS5MhNfQ2xguj0 X-Proofpoint-GUID: h3uXkCcX8QQwPnEIfzmS5MhNfQ2xguj0 Precedence: bulk List-ID: Introduce a new link restriction that includes the trusted builtin, secondary and machine keys. The restriction is based on the key to be added being vouched for by a key in any of these three keyrings. Suggested-by: Mimi Zohar Signed-off-by: Eric Snowberg --- v3: Initial version v4: moved code under CONFIG_INTEGRITY_MOK_KEYRING v5: Rename to machine keyring --- certs/system_keyring.c | 23 +++++++++++++++++++++++ include/keys/system_keyring.h | 6 ++++++ 2 files changed, 29 insertions(+) diff --git a/certs/system_keyring.c b/certs/system_keyring.c index 08ea542c8096..955bd57815f4 100644 --- a/certs/system_keyring.c +++ b/certs/system_keyring.c @@ -99,6 +99,29 @@ void __init set_machine_trusted_keys(struct key *keyring) { machine_trusted_keys = keyring; } + +/** + * restrict_link_by_builtin_secondary_and_ca_trusted + * + * Restrict the addition of keys into a keyring based on the key-to-be-added + * being vouched for by a key in either the built-in, the secondary, or + * the machine keyrings. + */ +int restrict_link_by_builtin_secondary_and_ca_trusted( + struct key *dest_keyring, + const struct key_type *type, + const union key_payload *payload, + struct key *restrict_key) +{ + if (machine_trusted_keys && type == &key_type_keyring && + dest_keyring == secondary_trusted_keys && + payload == &machine_trusted_keys->payload) + /* Allow the machine keyring to be added to the secondary */ + return 0; + + return restrict_link_by_builtin_and_secondary_trusted(dest_keyring, type, + payload, restrict_key); +} #endif /* diff --git a/include/keys/system_keyring.h b/include/keys/system_keyring.h index 98c9b10cdc17..fe4be10e66ef 100644 --- a/include/keys/system_keyring.h +++ b/include/keys/system_keyring.h @@ -39,8 +39,14 @@ extern int restrict_link_by_builtin_and_secondary_trusted( #endif #ifdef CONFIG_INTEGRITY_MACHINE_KEYRING +extern int restrict_link_by_builtin_secondary_and_ca_trusted( + struct key *dest_keyring, + const struct key_type *type, + const union key_payload *payload, + struct key *restrict_key); extern void __init set_machine_trusted_keys(struct key *keyring); #else +#define restrict_link_by_builtin_secondary_and_ca_trusted restrict_link_by_builtin_trusted static inline void __init set_machine_trusted_keys(struct key *keyring) { }