From patchwork Thu Nov 25 18:02:43 2021 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: 1559849 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=rRxGzAhF; dkim=fail reason="signature verification failed" header.d=suse.de header.i=@suse.de header.a=ed25519-sha256 header.s=susede2_ed25519 header.b=i2iW+K4j; dkim-atps=neutral Authentication-Results: ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=lists.ozlabs.org (client-ip=2404:9400:2:0:216:3eff:fee1:b9f1; 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 [IPv6:2404:9400:2:0:216:3eff:fee1:b9f1]) (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 4J0Qlp5BnHz9sRN for ; Fri, 26 Nov 2021 05:05:42 +1100 (AEDT) Received: from boromir.ozlabs.org (localhost [IPv6:::1]) by lists.ozlabs.org (Postfix) with ESMTP id 4J0Qlp41Dbz3cbk for ; Fri, 26 Nov 2021 05:05:42 +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=rRxGzAhF; dkim=fail reason="signature verification failed" header.d=suse.de header.i=@suse.de header.a=ed25519-sha256 header.s=susede2_ed25519 header.b=i2iW+K4j; 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=195.135.220.28; helo=smtp-out1.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=rRxGzAhF; dkim=pass header.d=suse.de header.i=@suse.de header.a=ed25519-sha256 header.s=susede2_ed25519 header.b=i2iW+K4j; dkim-atps=neutral Received: from smtp-out1.suse.de (smtp-out1.suse.de [195.135.220.28]) (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 4J0QjP1s8vz2ypV for ; Fri, 26 Nov 2021 05:03:37 +1100 (AEDT) Received: from relay2.suse.de (relay2.suse.de [149.44.160.134]) by smtp-out1.suse.de (Postfix) with ESMTP id 311FC21B36; Thu, 25 Nov 2021 18:03:34 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=suse.de; s=susede2_rsa; t=1637863414; 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: in-reply-to:in-reply-to:references:references; bh=5nki8oKAYJ8Wy585sdbUvxt9eszYdDH7kQPAAKG0sKs=; b=rRxGzAhFnzlxk8xFlFlrHtykFxHB7IZg2sxGzqji7TZIuTH7r+hfyRFt1lpJsSYqxM0kTY g7AhJ5OkKPnja+GdOxBqUEr2yJQIC/C9EK4WEN4Vk+B+CZDj4TNIu3hzYQD4TRy8VzcOFI PGDMzb2MDelJi2m6LFgsiPf6/SKGHMc= DKIM-Signature: v=1; a=ed25519-sha256; c=relaxed/relaxed; d=suse.de; s=susede2_ed25519; t=1637863414; 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: in-reply-to:in-reply-to:references:references; bh=5nki8oKAYJ8Wy585sdbUvxt9eszYdDH7kQPAAKG0sKs=; b=i2iW+K4j9B6Dc9uaJrADgTRd/0t6IXMDqfWTrzpenfu1PPghZwnc6lYgQCrOb2cUJIAmYt ZPzuOfWLAutE15BQ== Received: from kitsune.suse.cz (kitsune.suse.cz [10.100.12.127]) by relay2.suse.de (Postfix) with ESMTP id D8A9CA3B8C; Thu, 25 Nov 2021 18:03:33 +0000 (UTC) From: Michal Suchanek To: keyrings@vger.kernel.org Subject: [PATCH v2 5/6] module: Use key_being_used_for for log messages in verify_appended_signature Date: Thu, 25 Nov 2021 19:02:43 +0100 Message-Id: X-Mailer: git-send-email 2.31.1 In-Reply-To: References: 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 , linux-crypto@vger.kernel.org, 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 , linux-integrity@vger.kernel.org, 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" Add value for kexec appended signature and pass in key_being_used_for enum rather than a string to verify_appended_signature to produce log messages about the signature. Signed-off-by: Michal Suchanek --- arch/powerpc/kexec/elf_64.c | 2 +- arch/s390/kernel/machine_kexec_file.c | 2 +- crypto/asymmetric_keys/asymmetric_type.c | 1 + include/linux/verification.h | 3 ++- kernel/module.c | 3 ++- kernel/module_signing.c | 11 ++++++----- 6 files changed, 13 insertions(+), 9 deletions(-) diff --git a/arch/powerpc/kexec/elf_64.c b/arch/powerpc/kexec/elf_64.c index 63634c95265d..3aa5269f6e0f 100644 --- a/arch/powerpc/kexec/elf_64.c +++ b/arch/powerpc/kexec/elf_64.c @@ -158,7 +158,7 @@ int elf64_verify_sig(const char *kernel, unsigned long length) size_t kernel_len = length; return verify_appended_signature(kernel, &kernel_len, VERIFY_USE_PLATFORM_KEYRING, - "kexec_file"); + VERIFYING_KEXEC_APPENDED_SIGNATURE); } #endif /* CONFIG_KEXEC_SIG */ diff --git a/arch/s390/kernel/machine_kexec_file.c b/arch/s390/kernel/machine_kexec_file.c index c4632c1a1b59..316d082c9d99 100644 --- a/arch/s390/kernel/machine_kexec_file.c +++ b/arch/s390/kernel/machine_kexec_file.c @@ -33,7 +33,7 @@ int s390_verify_sig(const char *kernel, unsigned long length) return 0; return verify_appended_signature(kernel, &kernel_len, VERIFY_USE_PLATFORM_KEYRING, - "kexec_file"); + VERIFYING_KEXEC_APPENDED_SIGNATURE); } #endif /* CONFIG_KEXEC_SIG */ diff --git a/crypto/asymmetric_keys/asymmetric_type.c b/crypto/asymmetric_keys/asymmetric_type.c index ad8af3d70ac0..6fd20eec3882 100644 --- a/crypto/asymmetric_keys/asymmetric_type.c +++ b/crypto/asymmetric_keys/asymmetric_type.c @@ -25,6 +25,7 @@ const char *const key_being_used_for[NR__KEY_BEING_USED_FOR] = { [VERIFYING_KEXEC_PE_SIGNATURE] = "kexec PE sig", [VERIFYING_KEY_SIGNATURE] = "key sig", [VERIFYING_KEY_SELF_SIGNATURE] = "key self sig", + [VERIFYING_KEXEC_APPENDED_SIGNATURE] = "kexec appended sig", [VERIFYING_UNSPECIFIED_SIGNATURE] = "unspec sig", }; EXPORT_SYMBOL_GPL(key_being_used_for); diff --git a/include/linux/verification.h b/include/linux/verification.h index c1cf0582012a..23748feb9e03 100644 --- a/include/linux/verification.h +++ b/include/linux/verification.h @@ -26,6 +26,7 @@ enum key_being_used_for { VERIFYING_KEXEC_PE_SIGNATURE, VERIFYING_KEY_SIGNATURE, VERIFYING_KEY_SELF_SIGNATURE, + VERIFYING_KEXEC_APPENDED_SIGNATURE, VERIFYING_UNSPECIFIED_SIGNATURE, NR__KEY_BEING_USED_FOR }; @@ -61,7 +62,7 @@ extern int verify_pefile_signature(const void *pebuf, unsigned pelen, #endif int verify_appended_signature(const void *data, size_t *len, struct key *trusted_keys, - const char *what); + enum key_being_used_for purpose); #endif /* CONFIG_SYSTEM_DATA_VERIFICATION */ #endif /* _LINUX_VERIFY_PEFILE_H */ diff --git a/kernel/module.c b/kernel/module.c index d91ca0f93a40..0a359dc6b690 100644 --- a/kernel/module.c +++ b/kernel/module.c @@ -2891,7 +2891,8 @@ static int module_sig_check(struct load_info *info, int flags) */ if (flags == 0) { err = verify_appended_signature(mod, &info->len, - VERIFY_USE_SECONDARY_KEYRING, "module"); + VERIFY_USE_SECONDARY_KEYRING, + VERIFYING_MODULE_SIGNATURE); if (!err) { info->sig_ok = true; return 0; diff --git a/kernel/module_signing.c b/kernel/module_signing.c index 4c28cb55275f..cef72a6f6b5d 100644 --- a/kernel/module_signing.c +++ b/kernel/module_signing.c @@ -19,17 +19,18 @@ * @data: The data to be verified * @len: Size of @data. * @trusted_keys: Keyring to use for verification - * @what: Informational string for log messages + * @purpose: The use to which the key is being put */ int verify_appended_signature(const void *data, size_t *len, - struct key *trusted_keys, const char *what) + struct key *trusted_keys, + enum key_being_used_for purpose) { const unsigned long markerlen = sizeof(MODULE_SIG_STRING) - 1; struct module_signature ms; size_t sig_len, modlen = *len; int ret; - pr_devel("==>%s(,%zu)\n", __func__, modlen); + pr_devel("==>%s %s(,%zu)\n", __func__, key_being_used_for[purpose], modlen); if (markerlen > modlen) return -ENODATA; @@ -44,7 +45,7 @@ int verify_appended_signature(const void *data, size_t *len, memcpy(&ms, data + (modlen - sizeof(ms)), sizeof(ms)); - ret = mod_check_sig(&ms, modlen, what); + ret = mod_check_sig(&ms, modlen, key_being_used_for[purpose]); if (ret) return ret; @@ -54,6 +55,6 @@ int verify_appended_signature(const void *data, size_t *len, return verify_pkcs7_signature(data, modlen, data + modlen, sig_len, trusted_keys, - VERIFYING_MODULE_SIGNATURE, + purpose, NULL, NULL); }