From patchwork Mon Jan 10 13:49:52 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: =?utf-8?q?Michal_Such=C3=A1nek?= X-Patchwork-Id: 12708837 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 CFEB5C4332F for ; Mon, 10 Jan 2022 13:50:09 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233841AbiAJNuI (ORCPT ); Mon, 10 Jan 2022 08:50:08 -0500 Received: from smtp-out2.suse.de ([195.135.220.29]:33320 "EHLO smtp-out2.suse.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230236AbiAJNuI (ORCPT ); Mon, 10 Jan 2022 08:50:08 -0500 Received: from relay2.suse.de (relay2.suse.de [149.44.160.134]) by smtp-out2.suse.de (Postfix) with ESMTP id 3CFF81F395; Mon, 10 Jan 2022 13:50:06 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=suse.de; s=susede2_rsa; t=1641822606; h=from:from:reply-to:date:date:message-id:message-id:to:to:cc:cc: mime-version:mime-version: content-transfer-encoding:content-transfer-encoding; bh=dsFwmuk0CX7ltVsRVZVwGSb46zqyAdrIjBZaVQwQYsw=; b=Cxi4DKWB9qWnepRS9zf3XEXXuVPiwup7TAHvK+JLUGGtm0BerCUq/suWnWzntdzQYGF3vp 4A7gSVRUNwFiTa0Pn5a/y453sqAHJcRcsarbauzov8BOEh8AuFd4prI5YG3MIQrHAareCG 45Ry/WuimBqKLNFDp47Y0yZLBSubD2M= DKIM-Signature: v=1; a=ed25519-sha256; c=relaxed/relaxed; d=suse.de; s=susede2_ed25519; t=1641822606; h=from:from:reply-to:date:date:message-id:message-id:to:to:cc:cc: mime-version:mime-version: content-transfer-encoding:content-transfer-encoding; bh=dsFwmuk0CX7ltVsRVZVwGSb46zqyAdrIjBZaVQwQYsw=; b=M5mR11XFV1E1tlCtH8DkYBxALX63UOfVbEIwxOyXJ/UNwj3kNqIG/LUHUFY+E3Z4bsllSl CmTHDgKRABSaB6AQ== Received: from kitsune.suse.cz (kitsune.suse.cz [10.100.12.127]) by relay2.suse.de (Postfix) with ESMTP id 28230A3B83; Mon, 10 Jan 2022 13:50:03 +0000 (UTC) From: Michal Suchanek To: keyrings@vger.kernel.org, linux-crypto@vger.kernel.org, linux-integrity@vger.kernel.org Cc: Michal Suchanek , kexec@lists.infradead.org, Philipp Rudo , Mimi Zohar , Nayna , Rob Herring , linux-s390@vger.kernel.org, Vasily Gorbik , Lakshmi Ramasubramanian , Heiko Carstens , Jessica Yu , linux-kernel@vger.kernel.org, David Howells , Christian Borntraeger , Luis Chamberlain , Paul Mackerras , Hari Bathini , Alexander Gordeev , linuxppc-dev@lists.ozlabs.org, Frank van der Linden , Thiago Jung Bauermann , Daniel Axtens , buendgen@de.ibm.com, Michael Ellerman , Benjamin Herrenschmidt , Christian Borntraeger , Herbert Xu , "David S. Miller" , Dmitry Kasatkin , James Morris , "Serge E. Hallyn" , Sven Schnelle , Baoquan He , linux-security-module@vger.kernel.org Subject: [PATCH v4 0/6] KEXEC_SIG with appended signature Date: Mon, 10 Jan 2022 14:49:52 +0100 Message-Id: X-Mailer: git-send-email 2.31.1 MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: keyrings@vger.kernel.org Hello, This is a refresh of the KEXEC_SIG series. This adds KEXEC_SIG support on powerpc and deduplicates the code dealing with appended signatures in the kernel. powerpc supports IMA_KEXEC but that's an exception rather than the norm. On the other hand, KEXEC_SIG is portable across platforms. For distributions to have uniform security features across platforms one option should be used on all platforms. Thanks Michal Previous revision: https://lore.kernel.org/linuxppc-dev/cover.1637862358.git.msuchanek@suse.de/ Patched kernel tree: https://github.com/hramrach/kernel/tree/kexec_sig Michal Suchanek (6): s390/kexec_file: Don't opencode appended signature check. powerpc/kexec_file: Add KEXEC_SIG support. kexec_file: Don't opencode appended signature verification. module: strip the signature marker in the verification function. module: Use key_being_used_for for log messages in verify_appended_signature module: Move duplicate mod_check_sig users code to mod_parse_sig arch/powerpc/Kconfig | 16 +++++++ arch/powerpc/kexec/elf_64.c | 12 +++++ arch/s390/Kconfig | 2 +- arch/s390/kernel/machine_kexec_file.c | 41 +---------------- crypto/asymmetric_keys/asymmetric_type.c | 1 + include/linux/module_signature.h | 1 + include/linux/verification.h | 5 +++ kernel/module-internal.h | 2 - kernel/module.c | 12 +++-- kernel/module_signature.c | 56 +++++++++++++++++++++++- kernel/module_signing.c | 34 +++++++------- security/integrity/ima/ima_modsig.c | 22 ++-------- 12 files changed, 116 insertions(+), 88 deletions(-)