From patchwork Wed Nov 24 20:47:13 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Nayna Jain X-Patchwork-Id: 12637803 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 2C314C43219 for ; Wed, 24 Nov 2021 20:47:44 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S239344AbhKXUux (ORCPT ); Wed, 24 Nov 2021 15:50:53 -0500 Received: from mx0b-001b2d01.pphosted.com ([148.163.158.5]:2722 "EHLO mx0a-001b2d01.pphosted.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S239215AbhKXUuw (ORCPT ); Wed, 24 Nov 2021 15:50:52 -0500 Received: from pps.filterd (m0098416.ppops.net [127.0.0.1]) by mx0b-001b2d01.pphosted.com (8.16.1.2/8.16.1.2) with SMTP id 1AOKOq3K022508; Wed, 24 Nov 2021 20:47:37 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=DyPUEQ2W6j3UH2RHqYhsH+3pCq2hLr8IE4aho73FG3Q=; b=pG//T25re/aLEdeg5RQxXiDsv2ZmRz1A3EHZNP3un76LHAHhE0uWQZFKnHkYZKN4xa4y ONJdXFdY2mrqlh283EOWwSh11kahLg7GPVizbfG6KiIbR/8zl4gH0TBT77peOz+ZqIoe 9tVo9hxsLw9uG+1QWuT971PXjgucmVUe+vKIjdn9R6GdpWi7PqTwREKlb9KniW8CPHGv 5c9uYVog3wDX3ABPGEThGjXkJmpAbTgcwDMp3ajAM6I2/IEzw7u0SIrz4ImKIUQbpUPf fiCo83xzOgxsFLdYobaY7G57f94u7ZTXKwwPCrs1uQunAS4C9t2JujV99m6w66SjHvPu jw== Received: from pps.reinject (localhost [127.0.0.1]) by mx0b-001b2d01.pphosted.com with ESMTP id 3cht3fbbdt-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Wed, 24 Nov 2021 20:47:36 +0000 Received: from m0098416.ppops.net (m0098416.ppops.net [127.0.0.1]) by pps.reinject (8.16.0.43/8.16.0.43) with SMTP id 1AOKeSJu028722; Wed, 24 Nov 2021 20:47:36 GMT Received: from ppma04fra.de.ibm.com (6a.4a.5195.ip4.static.sl-reverse.com [149.81.74.106]) by mx0b-001b2d01.pphosted.com with ESMTP id 3cht3fbbdg-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Wed, 24 Nov 2021 20:47:36 +0000 Received: from pps.filterd (ppma04fra.de.ibm.com [127.0.0.1]) by ppma04fra.de.ibm.com (8.16.1.2/8.16.1.2) with SMTP id 1AOKd5C3005976; Wed, 24 Nov 2021 20:47:34 GMT Received: from b06cxnps4076.portsmouth.uk.ibm.com (d06relay13.portsmouth.uk.ibm.com [9.149.109.198]) by ppma04fra.de.ibm.com with ESMTP id 3cernbkprj-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Wed, 24 Nov 2021 20:47:33 +0000 Received: from d06av21.portsmouth.uk.ibm.com (d06av21.portsmouth.uk.ibm.com [9.149.105.232]) by b06cxnps4076.portsmouth.uk.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id 1AOKlUJR787014 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Wed, 24 Nov 2021 20:47:30 GMT Received: from d06av21.portsmouth.uk.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id BE41A52051; Wed, 24 Nov 2021 20:47:30 +0000 (GMT) Received: from li-4b5937cc-25c4-11b2-a85c-cea3a66903e4.ibm.com.com (unknown [9.211.59.116]) by d06av21.portsmouth.uk.ibm.com (Postfix) with ESMTP id BD39F52050; Wed, 24 Nov 2021 20:47:27 +0000 (GMT) From: Nayna Jain To: linux-integrity@vger.kernel.org, keyrings@vger.kernel.org Cc: dhowells@redhat.com, zohar@linux.ibm.com, jarkko@kernel.org, linux-security-module@vger.kernel.org, linux-kernel@vger.kernel.org, Dimitri John Ledkov , Seth Forshee , Nayna Jain , kernel test robot Subject: [PATCH v5 1/2] certs: export load_certificate_list() to be used outside certs/ Date: Wed, 24 Nov 2021 15:47:13 -0500 Message-Id: <20211124204714.82514-2-nayna@linux.ibm.com> X-Mailer: git-send-email 2.27.0 In-Reply-To: <20211124204714.82514-1-nayna@linux.ibm.com> References: <20211124204714.82514-1-nayna@linux.ibm.com> MIME-Version: 1.0 X-TM-AS-GCONF: 00 X-Proofpoint-GUID: C2V-9WS_k3wWvpSfdHcdLWCd1pDAk-g8 X-Proofpoint-ORIG-GUID: Byi4kMd4yvPIfFDLKsYK4SyyeBRlPzxC X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.205,Aquarius:18.0.790,Hydra:6.0.425,FMLib:17.0.607.475 definitions=2021-11-24_06,2021-11-24_01,2020-04-07_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 spamscore=0 lowpriorityscore=0 suspectscore=0 clxscore=1015 mlxlogscore=999 impostorscore=0 mlxscore=0 adultscore=0 phishscore=0 priorityscore=1501 malwarescore=0 bulkscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2110150000 definitions=main-2111240103 Precedence: bulk List-ID: X-Mailing-List: linux-integrity@vger.kernel.org load_certificate_list() parses certificates embedded in the kernel image to load them onto the keyring. Commit "2565ca7f5ec1 (certs: Move load_system_certificate_list to a common function)" made load_certificate_list() a common function in the certs/ directory. Now, export load_certificate_list() outside certs/ to be used by other functions. Reported-by: kernel test robot (auto build test ERROR) Signed-off-by: Nayna Jain Reviewed-by: Mimi Zohar --- certs/Makefile | 5 +++-- certs/blacklist.c | 1 - certs/common.c | 2 +- certs/common.h | 9 --------- certs/system_keyring.c | 1 - include/keys/system_keyring.h | 6 ++++++ 6 files changed, 10 insertions(+), 14 deletions(-) delete mode 100644 certs/common.h diff --git a/certs/Makefile b/certs/Makefile index 279433783b10..6f26c93ff56b 100644 --- a/certs/Makefile +++ b/certs/Makefile @@ -3,8 +3,9 @@ # Makefile for the linux kernel signature checking certificates. # -obj-$(CONFIG_SYSTEM_TRUSTED_KEYRING) += system_keyring.o system_certificates.o common.o -obj-$(CONFIG_SYSTEM_BLACKLIST_KEYRING) += blacklist.o common.o +obj-$(CONFIG_KEYS) += common.o +obj-$(CONFIG_SYSTEM_TRUSTED_KEYRING) += system_keyring.o system_certificates.o +obj-$(CONFIG_SYSTEM_BLACKLIST_KEYRING) += blacklist.o obj-$(CONFIG_SYSTEM_REVOCATION_LIST) += revocation_certificates.o ifneq ($(CONFIG_SYSTEM_BLACKLIST_HASH_LIST),"") obj-$(CONFIG_SYSTEM_BLACKLIST_KEYRING) += blacklist_hashes.o diff --git a/certs/blacklist.c b/certs/blacklist.c index c9a435b15af4..b95e9b19c42f 100644 --- a/certs/blacklist.c +++ b/certs/blacklist.c @@ -17,7 +17,6 @@ #include #include #include "blacklist.h" -#include "common.h" static struct key *blacklist_keyring; diff --git a/certs/common.c b/certs/common.c index 16a220887a53..41f763415a00 100644 --- a/certs/common.c +++ b/certs/common.c @@ -2,7 +2,7 @@ #include #include -#include "common.h" +#include int load_certificate_list(const u8 cert_list[], const unsigned long list_size, diff --git a/certs/common.h b/certs/common.h deleted file mode 100644 index abdb5795936b..000000000000 --- a/certs/common.h +++ /dev/null @@ -1,9 +0,0 @@ -/* SPDX-License-Identifier: GPL-2.0-or-later */ - -#ifndef _CERT_COMMON_H -#define _CERT_COMMON_H - -int load_certificate_list(const u8 cert_list[], const unsigned long list_size, - const struct key *keyring); - -#endif diff --git a/certs/system_keyring.c b/certs/system_keyring.c index 692365dee2bd..d130d5a96e09 100644 --- a/certs/system_keyring.c +++ b/certs/system_keyring.c @@ -16,7 +16,6 @@ #include #include #include -#include "common.h" static struct key *builtin_trusted_keys; #ifdef CONFIG_SECONDARY_TRUSTED_KEYRING diff --git a/include/keys/system_keyring.h b/include/keys/system_keyring.h index 6acd3cf13a18..d3f914d9a632 100644 --- a/include/keys/system_keyring.h +++ b/include/keys/system_keyring.h @@ -10,6 +10,12 @@ #include +#ifdef CONFIG_KEYS +int load_certificate_list(const u8 cert_list[], + const unsigned long list_size, + const struct key *keyring); +#endif + #ifdef CONFIG_SYSTEM_TRUSTED_KEYRING extern int restrict_link_by_builtin_trusted(struct key *keyring, From patchwork Wed Nov 24 20:47:14 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Nayna Jain X-Patchwork-Id: 12637805 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 95A68C433FE for ; Wed, 24 Nov 2021 20:47:53 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S239756AbhKXUvC (ORCPT ); Wed, 24 Nov 2021 15:51:02 -0500 Received: from mx0b-001b2d01.pphosted.com ([148.163.158.5]:4840 "EHLO mx0a-001b2d01.pphosted.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S239935AbhKXUu6 (ORCPT ); Wed, 24 Nov 2021 15:50:58 -0500 Received: from pps.filterd (m0098414.ppops.net [127.0.0.1]) by mx0b-001b2d01.pphosted.com (8.16.1.2/8.16.1.2) with SMTP id 1AOKOfSY028373; 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Wed, 24 Nov 2021 20:47:36 +0000 (GMT) From: Nayna Jain To: linux-integrity@vger.kernel.org, keyrings@vger.kernel.org Cc: dhowells@redhat.com, zohar@linux.ibm.com, jarkko@kernel.org, linux-security-module@vger.kernel.org, linux-kernel@vger.kernel.org, Dimitri John Ledkov , Seth Forshee , Nayna Jain Subject: [PATCH v5 2/2] integrity: support including firmware ".platform" keys at build time Date: Wed, 24 Nov 2021 15:47:14 -0500 Message-Id: <20211124204714.82514-3-nayna@linux.ibm.com> X-Mailer: git-send-email 2.27.0 In-Reply-To: <20211124204714.82514-1-nayna@linux.ibm.com> References: <20211124204714.82514-1-nayna@linux.ibm.com> MIME-Version: 1.0 X-TM-AS-GCONF: 00 X-Proofpoint-GUID: EOB5NYZ5A9i_vVxxgAtM61pEq8C6DgW0 X-Proofpoint-ORIG-GUID: RRY8SFIAj8LOTltzaae7Gu8q46xJVv7C X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.205,Aquarius:18.0.790,Hydra:6.0.425,FMLib:17.0.607.475 definitions=2021-11-24_06,2021-11-24_01,2020-04-07_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 lowpriorityscore=0 clxscore=1015 adultscore=0 mlxscore=0 spamscore=0 bulkscore=0 mlxlogscore=999 impostorscore=0 priorityscore=1501 suspectscore=0 malwarescore=0 phishscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2110150000 definitions=main-2111240103 Precedence: bulk List-ID: X-Mailing-List: linux-integrity@vger.kernel.org A new function load_builtin_platform_cert() is defined to load compiled in certificates onto the ".platform" keyring. Signed-off-by: Nayna Jain Reviewed-by: Mimi Zohar --- security/integrity/Kconfig | 10 +++++++ security/integrity/Makefile | 17 +++++++++++- security/integrity/digsig.c | 2 +- security/integrity/integrity.h | 6 +++++ .../integrity/platform_certs/platform_cert.S | 23 ++++++++++++++++ .../platform_certs/platform_keyring.c | 26 +++++++++++++++++++ 6 files changed, 82 insertions(+), 2 deletions(-) create mode 100644 security/integrity/platform_certs/platform_cert.S diff --git a/security/integrity/Kconfig b/security/integrity/Kconfig index 71f0177e8716..9fccf1368b8a 100644 --- a/security/integrity/Kconfig +++ b/security/integrity/Kconfig @@ -62,6 +62,16 @@ config INTEGRITY_PLATFORM_KEYRING provided by the platform for verifying the kexec'ed kerned image and, possibly, the initramfs signature. +config INTEGRITY_PLATFORM_KEYS + string "Builtin X.509 keys for .platform keyring" + depends on KEYS + depends on ASYMMETRIC_KEY_TYPE + depends on INTEGRITY_PLATFORM_KEYRING + help + If set, this option should be the filename of a PEM-formatted file + containing X.509 certificates to be loaded onto the ".platform" + keyring. + config LOAD_UEFI_KEYS depends on INTEGRITY_PLATFORM_KEYRING depends on EFI diff --git a/security/integrity/Makefile b/security/integrity/Makefile index 7ee39d66cf16..46629f5ef4f6 100644 --- a/security/integrity/Makefile +++ b/security/integrity/Makefile @@ -3,13 +3,18 @@ # Makefile for caching inode integrity data (iint) # +quiet_cmd_extract_certs = EXTRACT_CERTS $(patsubst "%",%,$(2)) + cmd_extract_certs = scripts/extract-cert $(2) $@ +$(eval $(call config_filename,INTEGRITY_PLATFORM_KEYS)) + obj-$(CONFIG_INTEGRITY) += integrity.o integrity-y := iint.o integrity-$(CONFIG_INTEGRITY_AUDIT) += integrity_audit.o integrity-$(CONFIG_INTEGRITY_SIGNATURE) += digsig.o integrity-$(CONFIG_INTEGRITY_ASYMMETRIC_KEYS) += digsig_asymmetric.o -integrity-$(CONFIG_INTEGRITY_PLATFORM_KEYRING) += platform_certs/platform_keyring.o +integrity-$(CONFIG_INTEGRITY_PLATFORM_KEYRING) += platform_certs/platform_keyring.o \ + platform_certs/platform_cert.o integrity-$(CONFIG_LOAD_UEFI_KEYS) += platform_certs/efi_parser.o \ platform_certs/load_uefi.o \ platform_certs/keyring_handler.o @@ -19,3 +24,13 @@ integrity-$(CONFIG_LOAD_PPC_KEYS) += platform_certs/efi_parser.o \ platform_certs/keyring_handler.o obj-$(CONFIG_IMA) += ima/ obj-$(CONFIG_EVM) += evm/ + + +$(obj)/platform_certs/platform_cert.o: $(obj)/platform_certs/platform_certificate_list + +targets += platform_certificate_list + +$(obj)/platform_certs/platform_certificate_list: scripts/extract-cert $(INTEGRITY_PLATFORM_KEYS_FILENAME) FORCE + $(call if_changed,extract_certs,$(CONFIG_INTEGRITY_PLATFORM_KEYS)) + +clean-files := platform_certs/platform_certificate_list diff --git a/security/integrity/digsig.c b/security/integrity/digsig.c index 3b06a01bd0fd..0ea40ed8dfcb 100644 --- a/security/integrity/digsig.c +++ b/security/integrity/digsig.c @@ -38,7 +38,7 @@ static const char * const keyring_name[INTEGRITY_KEYRING_MAX] = { #define restrict_link_to_ima restrict_link_by_builtin_trusted #endif -static struct key *integrity_keyring_from_id(const unsigned int id) +struct key *integrity_keyring_from_id(const unsigned int id) { if (id >= INTEGRITY_KEYRING_MAX) return ERR_PTR(-EINVAL); diff --git a/security/integrity/integrity.h b/security/integrity/integrity.h index 547425c20e11..feb84e1b1105 100644 --- a/security/integrity/integrity.h +++ b/security/integrity/integrity.h @@ -167,6 +167,7 @@ int __init integrity_init_keyring(const unsigned int id); int __init integrity_load_x509(const unsigned int id, const char *path); int __init integrity_load_cert(const unsigned int id, const char *source, const void *data, size_t len, key_perm_t perm); +struct key *integrity_keyring_from_id(const unsigned int id); #else static inline int integrity_digsig_verify(const unsigned int id, @@ -194,6 +195,11 @@ static inline int __init integrity_load_cert(const unsigned int id, { return 0; } + +static inline struct key *integrity_keyring_from_id(const unsigned int id) +{ + return ERR_PTR(-EOPNOTSUPP); +} #endif /* CONFIG_INTEGRITY_SIGNATURE */ #ifdef CONFIG_INTEGRITY_ASYMMETRIC_KEYS diff --git a/security/integrity/platform_certs/platform_cert.S b/security/integrity/platform_certs/platform_cert.S new file mode 100644 index 000000000000..20bccce5dc5a --- /dev/null +++ b/security/integrity/platform_certs/platform_cert.S @@ -0,0 +1,23 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +#include +#include + + __INITRODATA + + .align 8 +#ifdef CONFIG_INTEGRITY_PLATFORM_KEYRING + .globl platform_certificate_list +platform_certificate_list: +__cert_list_start: + .incbin "security/integrity/platform_certs/platform_certificate_list" +__cert_list_end: +#endif + + .align 8 + .globl platform_certificate_list_size +platform_certificate_list_size: +#ifdef CONFIG_64BIT + .quad __cert_list_end - __cert_list_start +#else + .long __cert_list_end - __cert_list_start +#endif diff --git a/security/integrity/platform_certs/platform_keyring.c b/security/integrity/platform_certs/platform_keyring.c index bcafd7387729..b45de142c5f5 100644 --- a/security/integrity/platform_certs/platform_keyring.c +++ b/security/integrity/platform_certs/platform_keyring.c @@ -12,8 +12,12 @@ #include #include #include +#include #include "../integrity.h" +extern __initconst const u8 platform_certificate_list[]; +extern __initconst const unsigned long platform_certificate_list_size; + /** * add_to_platform_keyring - Add to platform keyring without validation. * @source: Source of key @@ -37,6 +41,28 @@ void __init add_to_platform_keyring(const char *source, const void *data, pr_info("Error adding keys to platform keyring %s\n", source); } +static __init int load_platform_certificate_list(void) +{ + const u8 *p; + unsigned long size; + int rc; + struct key *keyring; + + p = platform_certificate_list; + size = platform_certificate_list_size; + + keyring = integrity_keyring_from_id(INTEGRITY_KEYRING_PLATFORM); + if (IS_ERR(keyring)) + return PTR_ERR(keyring); + + rc = load_certificate_list(p, size, keyring); + if (rc) + pr_info("Error adding keys to platform keyring %d\n", rc); + + return rc; +} +late_initcall(load_platform_certificate_list); + /* * Create the trusted keyrings. */