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: Michal Suchanek X-Patchwork-Id: 1577929 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Authentication-Results: bilbo.ozlabs.org; dkim=fail reason="signature verification failed" (1024-bit key; unprotected) header.d=suse.de header.i=@suse.de header.a=rsa-sha256 header.s=susede2_rsa header.b=Cxi4DKWB; dkim=fail reason="signature verification failed" header.d=suse.de header.i=@suse.de header.a=ed25519-sha256 header.s=susede2_ed25519 header.b=M5mR11XF; dkim-atps=neutral Authentication-Results: ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=lists.ozlabs.org (client-ip=112.213.38.117; helo=lists.ozlabs.org; envelope-from=linuxppc-dev-bounces+incoming=patchwork.ozlabs.org@lists.ozlabs.org; receiver=) Received: from lists.ozlabs.org (lists.ozlabs.org [112.213.38.117]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits)) (No client certificate requested) by bilbo.ozlabs.org (Postfix) with ESMTPS id 4JXZw206s3z9s1l for ; Tue, 11 Jan 2022 00:50:25 +1100 (AEDT) Received: from boromir.ozlabs.org (localhost [IPv6:::1]) by lists.ozlabs.org (Postfix) with ESMTP id 4JXZw05CrRz30M9 for ; Tue, 11 Jan 2022 00:50:24 +1100 (AEDT) Authentication-Results: lists.ozlabs.org; dkim=fail reason="signature verification failed" (1024-bit key; unprotected) header.d=suse.de header.i=@suse.de header.a=rsa-sha256 header.s=susede2_rsa header.b=Cxi4DKWB; dkim=fail reason="signature verification failed" header.d=suse.de header.i=@suse.de header.a=ed25519-sha256 header.s=susede2_ed25519 header.b=M5mR11XF; dkim-atps=neutral X-Original-To: linuxppc-dev@lists.ozlabs.org Delivered-To: linuxppc-dev@lists.ozlabs.org Authentication-Results: lists.ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=suse.de (client-ip=195.135.220.29; helo=smtp-out2.suse.de; envelope-from=msuchanek@suse.de; receiver=) Authentication-Results: lists.ozlabs.org; dkim=pass (1024-bit key; unprotected) header.d=suse.de header.i=@suse.de header.a=rsa-sha256 header.s=susede2_rsa header.b=Cxi4DKWB; dkim=pass header.d=suse.de header.i=@suse.de header.a=ed25519-sha256 header.s=susede2_ed25519 header.b=M5mR11XF; dkim-atps=neutral Received: from smtp-out2.suse.de (smtp-out2.suse.de [195.135.220.29]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits) server-digest SHA256) (No client certificate requested) by lists.ozlabs.org (Postfix) with ESMTPS id 4JXZvk0GZrz2yNr for ; Tue, 11 Jan 2022 00:50:09 +1100 (AEDT) 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 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 X-BeenThere: linuxppc-dev@lists.ozlabs.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Nayna , Mimi Zohar , David Howells , Paul Mackerras , Alexander Gordeev , Rob Herring , Herbert Xu , Baoquan He , Christian Borntraeger , James Morris , Lakshmi Ramasubramanian , Michal Suchanek , "Serge E. Hallyn" , Vasily Gorbik , linux-s390@vger.kernel.org, Heiko Carstens , Dmitry Kasatkin , Hari Bathini , Daniel Axtens , Christian Borntraeger , Philipp Rudo , Frank van der Linden , kexec@lists.infradead.org, linux-kernel@vger.kernel.org, Luis Chamberlain , Sven Schnelle , linux-security-module@vger.kernel.org, Jessica Yu , linuxppc-dev@lists.ozlabs.org, "David S. Miller" , Thiago Jung Bauermann , buendgen@de.ibm.com Errors-To: linuxppc-dev-bounces+incoming=patchwork.ozlabs.org@lists.ozlabs.org Sender: "Linuxppc-dev" 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(-)