From mboxrd@z Thu Jan 1 00:00:00 1970 Return-path: Received: from mx0a-001b2d01.pphosted.com ([148.163.156.1]) by merlin.infradead.org with esmtps (Exim 4.90_1 #2 (Red Hat Linux)) id 1gkIe6-0007YO-KO for kexec@lists.infradead.org; Fri, 18 Jan 2019 01:08:34 +0000 Received: from pps.filterd (m0098396.ppops.net [127.0.0.1]) by mx0a-001b2d01.pphosted.com (8.16.0.22/8.16.0.22) with SMTP id x0I188Xw128997 for ; Thu, 17 Jan 2019 20:08:26 -0500 Received: from e06smtp01.uk.ibm.com (e06smtp01.uk.ibm.com [195.75.94.97]) by mx0a-001b2d01.pphosted.com with ESMTP id 2q33yk9h5n-1 (version=TLSv1.2 cipher=AES256-GCM-SHA384 bits=256 verify=NOT) for ; Thu, 17 Jan 2019 20:08:26 -0500 Received: from localhost by e06smtp01.uk.ibm.com with IBM ESMTP SMTP Gateway: Authorized Use Only! Violators will be prosecuted for from ; Fri, 18 Jan 2019 01:08:23 -0000 Subject: Re: [PATCH v3 0/2] let kexec_file_load use platform keyring to verify the kernel image From: Mimi Zohar Date: Thu, 17 Jan 2019 20:08:04 -0500 In-Reply-To: <20190116101654.7288-1-kasong@redhat.com> References: <20190116101654.7288-1-kasong@redhat.com> Mime-Version: 1.0 Message-Id: <1547773684.4026.10.camel@linux.ibm.com> List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Sender: "kexec" Errors-To: kexec-bounces+dwmw2=infradead.org@lists.infradead.org To: Kairui Song , linux-kernel@vger.kernel.org, Dave Young Cc: jwboyer@fedoraproject.org, ebiggers@google.com, dyoung@redhat.com, nayna@linux.ibm.com, kexec@lists.infradead.org, jmorris@namei.org, dhowells@redhat.com, keyrings@vger.kernel.org, linux-integrity@vger.kernel.org, dwmw2@infradead.org, bauerman@linux.ibm.com, serge@hallyn.com T24gV2VkLCAyMDE5LTAxLTE2IGF0IDE4OjE2ICswODAwLCBLYWlydWkgU29uZyB3cm90ZToKPiBU aGlzIHBhdGNoIHNlcmllcyBhZGRzIGEgLnBsYXRmb3JtX3RydXN0ZWRfa2V5cyBpbiBzeXN0ZW1f a2V5cmluZyBhcyB0aGUKPiByZWZlcmVuY2UgdG8gLnBsYXRmb3JtIGtleXJpbmcgaW4gaW50ZWdy aXR5IHN1YnN5c3RlbSwgd2hlbiBwbGF0Zm9ybQo+IGtleXJpbmcgaXMgYmVpbmcgaW5pdGlhbGl6 ZWQgaXQgd2lsbCBiZSB1cGRhdGVkLiBTbyBvdGhlciBjb21wb25lbnQgY291bGQKPiB1c2UgdGhp cyBrZXlyaW5nIGFzIHdlbGwuCgpSZW1vdmUgIm90aGVyIGNvbXBvbmVudCBjb3VsZCB1c2UgLi4u Ii4KPiAKPiBUaGlzIHBhdGNoIHNlcmllcyBhbHNvIGxldCBrZXhlY19maWxlX2xvYWQgdXNlIHBs YXRmb3JtIGtleXJpbmcgYXMgZmFsbAo+IGJhY2sgaWYgaXQgZmFpbGVkIHRvIHZlcmlmeSB0aGUg aW1hZ2UgYWdhaW5zdCBzZWNvbmRhcnkga2V5cmluZywgbWFrZSBpdAo+IHBvc3NpYmxlIHRvIGxv YWQga2VybmVsIHNpZ25lZCBieSB0aGlyZCBwYXJ0IGtleSBpZiB0aGlyZCBwYXJ0eSBrZXkgaXMK PiBpbXBvcnRlZCBpbiB0aGUgZmlybXdhcmUuCgpUaGlzIGlzIHRoZSBvbmx5IHJlYXNvbiBmb3Ig dGhlc2UgcGF0Y2hlcy4gwqBQbGVhc2UgcmVtb3ZlICJhbHNvIi4KCj4gCj4gQWZ0ZXIgdGhpcyBw YXRjaCBrZXhlY19maWxlX2xvYWQgd2lsbCBiZSBhYmxlIHRvIHZlcmlmeSBhIHNpZ25lZCBQRQo+ IGJ6SW1hZ2UgdXNpbmcga2V5cyBpbiBwbGF0Zm9ybSBrZXlyaW5nLgo+IAo+IFRlc3RlZCBpbiBh IFZNIHdpdGggbG9jYWxseSBzaWduZWQga2VybmVsIHdpdGggcGVzaWduIGFuZCBpbXBvcnRlZCB0 aGUKPiBjZXJ0IHRvIEVGSSdzIE1va0xpc3QgdmFyaWFibGUuCgpJdCdzIHRha2VuIHNvIGxvbmcg Zm9yIG1lIHRvIHJldmlldy90ZXN0IHRoaXMgcGF0Y2ggc2V0IGR1ZSB0byBhCnJlZ3Jlc3Npb24g aW4gc2FuaXR5X2NoZWNrX3NlZ21lbnRfbGlzdCgpLCBpbnRyb2R1Y2VkIHNvbWV3aGVyZQpiZXR3 ZWVuIDQuMjAgYW5kIDUuMC4wLXJjMS4gwqBUaGUgc2dlbWVudCBvdmVybGFwIHRlc3QgLSAiaWYg KChtZW5kID4KcHN0YXJ0KSAmJiAobXN0YXJ0IDwgcGVuZCkpIiAtIGZhaWxzLCByZXR1cm5pbmcg YSAtRUlOVkFMLgoKSXMgYW55b25lIGVsc2Ugc2VlaW5nIHRoaXM/CgpNaW1pCgoKPiAKPiBLYWly dWkgU29uZyAoMik6Cj4gICBpbnRlZ3JpdHksIEtFWVM6IGFkZCBhIHJlZmVyZW5jZSB0byBwbGF0 Zm9ybSBrZXlyaW5nCj4gICBrZXhlYywgS0VZUzogTWFrZSB1c2Ugb2YgcGxhdGZvcm0ga2V5cmlu ZyBmb3Igc2lnbmF0dXJlIHZlcmlmeQo+IAo+IFVwZGF0ZSBmcm9tIFYyOgo+ICAgLSBVc2UgSVNf RU5BQkxFRCBpbiBrZXhlY19maWxlX2xvYWQgdG8ganVkZ2UgaWYgcGxhdGZvcm1fdHJ1c3RlZF9r ZXlzCj4gICAgIHNob3VsZCBiZSB1c2VkIGZvciB2ZXJpZnlpbmcgaW1hZ2UgYXMgc3VnZ2VzdGVk IGJ5IE1pbWkgWm9oYXIKPiAKPiBVcGRhdGUgZnJvbSBWMToKPiAgIC0gTWFrZSBwbGF0Zm9ybV90 cnVzdGVkX2tleXMgc3RhdGljLCBhbmQgdXBkYXRlIGNvbW1pdCBtZXNzYWdlIGFzIHN1Z2dlc3Rl ZAo+ICAgICBieSBNaW1pIFpvaGFyCj4gICAtIEFsd2F5cyBjaGVjayBpZiBwbGF0Zm9ybSBrZXly aW5nIGlzIGluaXRpYWxpemVkIGJlZm9yZSB1c2UgaXQKPiAKPiBLYWlydWkgU29uZyAoMik6Cj4g ICBpbnRlZ3JpdHksIEtFWVM6IGFkZCBhIHJlZmVyZW5jZSB0byBwbGF0Zm9ybSBrZXlyaW5nCj4g ICBrZXhlYywgS0VZUzogTWFrZSB1c2Ugb2YgcGxhdGZvcm0ga2V5cmluZyBmb3Igc2lnbmF0dXJl IHZlcmlmeQo+IAo+ICBhcmNoL3g4Ni9rZXJuZWwva2V4ZWMtYnppbWFnZTY0LmMgfCAxMyArKysr KysrKysrLS0tCj4gIGNlcnRzL3N5c3RlbV9rZXlyaW5nLmMgICAgICAgICAgICB8IDIyICsrKysr KysrKysrKysrKysrKysrKy0KPiAgaW5jbHVkZS9rZXlzL3N5c3RlbV9rZXlyaW5nLmggICAgIHwg IDUgKysrKysKPiAgaW5jbHVkZS9saW51eC92ZXJpZmljYXRpb24uaCAgICAgIHwgIDEgKwo+ICBz ZWN1cml0eS9pbnRlZ3JpdHkvZGlnc2lnLmMgICAgICAgfCAgNiArKysrKysKPiAgNSBmaWxlcyBj aGFuZ2VkLCA0MyBpbnNlcnRpb25zKCspLCA0IGRlbGV0aW9ucygtKQo+IAoKCl9fX19fX19fX19f X19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fCmtleGVjIG1haWxpbmcgbGlzdApr ZXhlY0BsaXN0cy5pbmZyYWRlYWQub3JnCmh0dHA6Ly9saXN0cy5pbmZyYWRlYWQub3JnL21haWxt YW4vbGlzdGluZm8va2V4ZWMK From mboxrd@z Thu Jan 1 00:00:00 1970 From: Mimi Zohar Date: Fri, 18 Jan 2019 01:08:04 +0000 Subject: Re: [PATCH v3 0/2] let kexec_file_load use platform keyring to verify the kernel image Message-Id: <1547773684.4026.10.camel@linux.ibm.com> MIME-Version: 1.0 Content-Type: text/plain; charset="ibm852" Content-Transfer-Encoding: base64 List-Id: References: <20190116101654.7288-1-kasong@redhat.com> In-Reply-To: <20190116101654.7288-1-kasong@redhat.com> To: Kairui Song , linux-kernel@vger.kernel.org, Dave Young Cc: dhowells@redhat.com, dwmw2@infradead.org, jwboyer@fedoraproject.org, keyrings@vger.kernel.org, jmorris@namei.org, serge@hallyn.com, bauerman@linux.ibm.com, ebiggers@google.com, nayna@linux.ibm.com, linux-integrity@vger.kernel.org, kexec@lists.infradead.org T24gV2VkLCAyMDE5LTAxLTE2IGF0IDE4OjE2ICswODAwLCBLYWlydWkgU29uZyB3cm90ZToKPiBU aGlzIHBhdGNoIHNlcmllcyBhZGRzIGEgLnBsYXRmb3JtX3RydXN0ZWRfa2V5cyBpbiBzeXN0ZW1f a2V5cmluZyBhcyB0aGUKPiByZWZlcmVuY2UgdG8gLnBsYXRmb3JtIGtleXJpbmcgaW4gaW50ZWdy aXR5IHN1YnN5c3RlbSwgd2hlbiBwbGF0Zm9ybQo+IGtleXJpbmcgaXMgYmVpbmcgaW5pdGlhbGl6 ZWQgaXQgd2lsbCBiZSB1cGRhdGVkLiBTbyBvdGhlciBjb21wb25lbnQgY291bGQKPiB1c2UgdGhp cyBrZXlyaW5nIGFzIHdlbGwuCgpSZW1vdmUgIm90aGVyIGNvbXBvbmVudCBjb3VsZCB1c2UgLi4u Ii4KPiAKPiBUaGlzIHBhdGNoIHNlcmllcyBhbHNvIGxldCBrZXhlY19maWxlX2xvYWQgdXNlIHBs YXRmb3JtIGtleXJpbmcgYXMgZmFsbAo+IGJhY2sgaWYgaXQgZmFpbGVkIHRvIHZlcmlmeSB0aGUg aW1hZ2UgYWdhaW5zdCBzZWNvbmRhcnkga2V5cmluZywgbWFrZSBpdAo+IHBvc3NpYmxlIHRvIGxv YWQga2VybmVsIHNpZ25lZCBieSB0aGlyZCBwYXJ0IGtleSBpZiB0aGlyZCBwYXJ0eSBrZXkgaXMK PiBpbXBvcnRlZCBpbiB0aGUgZmlybXdhcmUuCgpUaGlzIGlzIHRoZSBvbmx5IHJlYXNvbiBmb3Ig dGhlc2UgcGF0Y2hlcy4gwqBQbGVhc2UgcmVtb3ZlICJhbHNvIi4KCj4gCj4gQWZ0ZXIgdGhpcyBw YXRjaCBrZXhlY19maWxlX2xvYWQgd2lsbCBiZSBhYmxlIHRvIHZlcmlmeSBhIHNpZ25lZCBQRQo+ IGJ6SW1hZ2UgdXNpbmcga2V5cyBpbiBwbGF0Zm9ybSBrZXlyaW5nLgo+IAo+IFRlc3RlZCBpbiBh IFZNIHdpdGggbG9jYWxseSBzaWduZWQga2VybmVsIHdpdGggcGVzaWduIGFuZCBpbXBvcnRlZCB0 aGUKPiBjZXJ0IHRvIEVGSSdzIE1va0xpc3QgdmFyaWFibGUuCgpJdCdzIHRha2VuIHNvIGxvbmcg Zm9yIG1lIHRvIHJldmlldy90ZXN0IHRoaXMgcGF0Y2ggc2V0IGR1ZSB0byBhCnJlZ3Jlc3Npb24g aW4gc2FuaXR5X2NoZWNrX3NlZ21lbnRfbGlzdCgpLCBpbnRyb2R1Y2VkIHNvbWV3aGVyZQpiZXR3 ZWVuIDQuMjAgYW5kIDUuMC4wLXJjMS4gwqBUaGUgc2dlbWVudCBvdmVybGFwIHRlc3QgLSAiaWYg KChtZW5kID4KcHN0YXJ0KSAmJiAobXN0YXJ0IDwgcGVuZCkpIiAtIGZhaWxzLCByZXR1cm5pbmcg YSAtRUlOVkFMLgoKSXMgYW55b25lIGVsc2Ugc2VlaW5nIHRoaXM/CgpNaW1pCgoKPiAKPiBLYWly dWkgU29uZyAoMik6Cj4gICBpbnRlZ3JpdHksIEtFWVM6IGFkZCBhIHJlZmVyZW5jZSB0byBwbGF0 Zm9ybSBrZXlyaW5nCj4gICBrZXhlYywgS0VZUzogTWFrZSB1c2Ugb2YgcGxhdGZvcm0ga2V5cmlu ZyBmb3Igc2lnbmF0dXJlIHZlcmlmeQo+IAo+IFVwZGF0ZSBmcm9tIFYyOgo+ICAgLSBVc2UgSVNf RU5BQkxFRCBpbiBrZXhlY19maWxlX2xvYWQgdG8ganVkZ2UgaWYgcGxhdGZvcm1fdHJ1c3RlZF9r ZXlzCj4gICAgIHNob3VsZCBiZSB1c2VkIGZvciB2ZXJpZnlpbmcgaW1hZ2UgYXMgc3VnZ2VzdGVk IGJ5IE1pbWkgWm9oYXIKPiAKPiBVcGRhdGUgZnJvbSBWMToKPiAgIC0gTWFrZSBwbGF0Zm9ybV90 cnVzdGVkX2tleXMgc3RhdGljLCBhbmQgdXBkYXRlIGNvbW1pdCBtZXNzYWdlIGFzIHN1Z2dlc3Rl ZAo+ICAgICBieSBNaW1pIFpvaGFyCj4gICAtIEFsd2F5cyBjaGVjayBpZiBwbGF0Zm9ybSBrZXly aW5nIGlzIGluaXRpYWxpemVkIGJlZm9yZSB1c2UgaXQKPiAKPiBLYWlydWkgU29uZyAoMik6Cj4g ICBpbnRlZ3JpdHksIEtFWVM6IGFkZCBhIHJlZmVyZW5jZSB0byBwbGF0Zm9ybSBrZXlyaW5nCj4g ICBrZXhlYywgS0VZUzogTWFrZSB1c2Ugb2YgcGxhdGZvcm0ga2V5cmluZyBmb3Igc2lnbmF0dXJl IHZlcmlmeQo+IAo+ICBhcmNoL3g4Ni9rZXJuZWwva2V4ZWMtYnppbWFnZTY0LmMgfCAxMyArKysr KysrKysrLS0tCj4gIGNlcnRzL3N5c3RlbV9rZXlyaW5nLmMgICAgICAgICAgICB8IDIyICsrKysr KysrKysrKysrKysrKysrKy0KPiAgaW5jbHVkZS9rZXlzL3N5c3RlbV9rZXlyaW5nLmggICAgIHwg IDUgKysrKysKPiAgaW5jbHVkZS9saW51eC92ZXJpZmljYXRpb24uaCAgICAgIHwgIDEgKwo+ICBz ZWN1cml0eS9pbnRlZ3JpdHkvZGlnc2lnLmMgICAgICAgfCAgNiArKysrKysKPiAgNSBmaWxlcyBj aGFuZ2VkLCA0MyBpbnNlcnRpb25zKCspLCA0IGRlbGV0aW9ucygtKQo+IAo= 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 X-Spam-Level: X-Spam-Status: No, score=-1.0 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_PASS autolearn=ham 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 52866C43387 for ; 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Violators will be prosecuted; (version=TLSv1/SSLv3 cipher=AES256-GCM-SHA384 bits=256/256) Fri, 18 Jan 2019 01:08:18 -0000 Received: from d06av23.portsmouth.uk.ibm.com (d06av23.portsmouth.uk.ibm.com [9.149.105.59]) by b06cxnps4075.portsmouth.uk.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id x0I18HQb2621796 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=FAIL); Fri, 18 Jan 2019 01:08:17 GMT Received: from d06av23.portsmouth.uk.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 22D23A405E; Fri, 18 Jan 2019 01:08:17 +0000 (GMT) Received: from d06av23.portsmouth.uk.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 2C8FAA4040; Fri, 18 Jan 2019 01:08:15 +0000 (GMT) Received: from localhost.localdomain (unknown [9.80.91.118]) by d06av23.portsmouth.uk.ibm.com (Postfix) with ESMTP; Fri, 18 Jan 2019 01:08:15 +0000 (GMT) Subject: Re: [PATCH v3 0/2] let kexec_file_load use platform keyring to verify the kernel image From: Mimi Zohar To: Kairui Song , linux-kernel@vger.kernel.org, Dave Young Cc: dhowells@redhat.com, dwmw2@infradead.org, jwboyer@fedoraproject.org, keyrings@vger.kernel.org, jmorris@namei.org, serge@hallyn.com, bauerman@linux.ibm.com, ebiggers@google.com, nayna@linux.ibm.com, dyoung@redhat.com, linux-integrity@vger.kernel.org, kexec@lists.infradead.org Date: Thu, 17 Jan 2019 20:08:04 -0500 In-Reply-To: <20190116101654.7288-1-kasong@redhat.com> References: <20190116101654.7288-1-kasong@redhat.com> Content-Type: text/plain; charset="UTF-8" X-Mailer: Evolution 3.20.5 (3.20.5-1.fc24) Mime-Version: 1.0 Content-Transfer-Encoding: 8bit X-TM-AS-GCONF: 00 x-cbid: 19011801-4275-0000-0000-00000300B4F5 X-IBM-AV-DETECTION: SAVI=unused REMOTE=unused XFE=unused x-cbparentid: 19011801-4276-0000-0000-0000380EDB78 Message-Id: <1547773684.4026.10.camel@linux.ibm.com> X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:,, definitions=2019-01-18_01:,, signatures=0 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 priorityscore=1501 malwarescore=0 suspectscore=0 phishscore=0 bulkscore=0 spamscore=0 clxscore=1015 lowpriorityscore=0 mlxscore=0 impostorscore=0 mlxlogscore=999 adultscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.0.1-1810050000 definitions=main-1901180007 Sender: linux-integrity-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-integrity@vger.kernel.org On Wed, 2019-01-16 at 18:16 +0800, Kairui Song wrote: > This patch series adds a .platform_trusted_keys in system_keyring as the > reference to .platform keyring in integrity subsystem, when platform > keyring is being initialized it will be updated. So other component could > use this keyring as well. Remove "other component could use ...". > > This patch series also let kexec_file_load use platform keyring as fall > back if it failed to verify the image against secondary keyring, make it > possible to load kernel signed by third part key if third party key is > imported in the firmware. This is the only reason for these patches.  Please remove "also". > > After this patch kexec_file_load will be able to verify a signed PE > bzImage using keys in platform keyring. > > Tested in a VM with locally signed kernel with pesign and imported the > cert to EFI's MokList variable. It's taken so long for me to review/test this patch set due to a regression in sanity_check_segment_list(), introduced somewhere between 4.20 and 5.0.0-rc1.  The sgement overlap test - "if ((mend > pstart) && (mstart < pend))" - fails, returning a -EINVAL. Is anyone else seeing this? Mimi > > Kairui Song (2): > integrity, KEYS: add a reference to platform keyring > kexec, KEYS: Make use of platform keyring for signature verify > > Update from V2: > - Use IS_ENABLED in kexec_file_load to judge if platform_trusted_keys > should be used for verifying image as suggested by Mimi Zohar > > Update from V1: > - Make platform_trusted_keys static, and update commit message as suggested > by Mimi Zohar > - Always check if platform keyring is initialized before use it > > Kairui Song (2): > integrity, KEYS: add a reference to platform keyring > kexec, KEYS: Make use of platform keyring for signature verify > > arch/x86/kernel/kexec-bzimage64.c | 13 ++++++++++--- > certs/system_keyring.c | 22 +++++++++++++++++++++- > include/keys/system_keyring.h | 5 +++++ > include/linux/verification.h | 1 + > security/integrity/digsig.c | 6 ++++++ > 5 files changed, 43 insertions(+), 4 deletions(-) >