From patchwork Sun Jun 30 19:37:00 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Lukas Wunner X-Patchwork-Id: 13717350 Received: from mailout2.hostsharing.net (mailout2.hostsharing.net [83.223.78.233]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 9B0F215AAD5; Sun, 30 Jun 2024 19:59:03 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=83.223.78.233 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1719777546; cv=none; b=BSMjQm6MgT6mUXtu490Jz/V257BAaWWW5e4LdpzbEfZuV/J9m3BNySRZnbx6hVZMoWnUqBQR9Uu8J0s7wqKYmH1BbT/ASEuLEJAWAcFSywDKBxolQ1gZdc1G2v9H0xfe2gcLhCn6+6j6C61J6pezsQJGT55hBNX0/fvJOis3JFk= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1719777546; c=relaxed/simple; bh=uuHdMHzfRPDiWL9QZS0QR0jk0vfUlXLq2nEG6ZFImZ8=; h=Message-ID:In-Reply-To:References:From:Date:Subject:MIME-Version: Content-Type:To:Cc; b=Ts9dKP9SxeywvrvwMNOvTeIfZkhpGvPL2qn+18yUUF8rJHaLLXXXR4eiokiXAHlNYP1Bz44F4M07TZ3X55e/cSqJAVg1nGUze4eK0YjsAUmmRyqwaw3QwUrX2QaXlEvF0qinkRn1N+PBy9yBCZBt+SI9eSVrUucBnIGLNudmEbE= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=wunner.de; spf=pass smtp.mailfrom=wunner.de; arc=none smtp.client-ip=83.223.78.233 Authentication-Results: smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=wunner.de Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=wunner.de Received: from h08.hostsharing.net (h08.hostsharing.net [83.223.95.28]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256 client-signature RSA-PSS (4096 bits) client-digest SHA256) (Client CN "*.hostsharing.net", Issuer "RapidSSL TLS RSA CA G1" (verified OK)) by mailout2.hostsharing.net (Postfix) with ESMTPS id A0B5A10189B98; Sun, 30 Jun 2024 21:48:57 +0200 (CEST) Received: from localhost (unknown [89.246.108.87]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange ECDHE (prime256v1) server-signature RSA-PSS (4096 bits) server-digest SHA256) (No client certificate requested) by h08.hostsharing.net (Postfix) with ESMTPSA id 66FD861DA805; Sun, 30 Jun 2024 21:48:57 +0200 (CEST) X-Mailbox-Line: From b5e8ede319f374bd7be08c9963487e83cee3496b Mon Sep 17 00:00:00 2001 Message-ID: In-Reply-To: References: From: Lukas Wunner Date: Sun, 30 Jun 2024 21:37:00 +0200 Subject: [PATCH v2 02/18] X.509: Parse Subject Alternative Name in certificates Precedence: bulk X-Mailing-List: linux-cxl@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 To: Jonathan Cameron , Bjorn Helgaas , David Howells , Herbert Xu , "David S. Miller" , David Woodhouse , James Bottomley , , , , , Cc: , David Box , Dan Williams , "Li, Ming" , Ilpo Jarvinen , Alistair Francis , Wilfred Mallawa , "Damien Le Moal" , Alexey Kardashevskiy , Dhaval Giani , Gobikrishna Dhanuskodi , Jason Gunthorpe , Peter Gonda , Jerome Glisse , Sean Christopherson , Alexander Graf , Samuel Ortiz , Eric Biggers The upcoming support for PCI device authentication with CMA-SPDM (PCIe r6.1 sec 6.31) requires validating the Subject Alternative Name in X.509 certificates. Store a pointer to the Subject Alternative Name upon parsing for consumption by CMA-SPDM. Signed-off-by: Lukas Wunner Reviewed-by: Wilfred Mallawa Reviewed-by: Ilpo Järvinen Reviewed-by: Jonathan Cameron Acked-by: Dan Williams Reviewed-by: Alistair Francis --- crypto/asymmetric_keys/x509_cert_parser.c | 9 +++++++++ include/keys/x509-parser.h | 2 ++ 2 files changed, 11 insertions(+) diff --git a/crypto/asymmetric_keys/x509_cert_parser.c b/crypto/asymmetric_keys/x509_cert_parser.c index 25cc4273472f..92314e4854f1 100644 --- a/crypto/asymmetric_keys/x509_cert_parser.c +++ b/crypto/asymmetric_keys/x509_cert_parser.c @@ -588,6 +588,15 @@ int x509_process_extension(void *context, size_t hdrlen, return 0; } + if (ctx->last_oid == OID_subjectAltName) { + if (ctx->cert->raw_san) + return -EBADMSG; + + ctx->cert->raw_san = v; + ctx->cert->raw_san_size = vlen; + return 0; + } + if (ctx->last_oid == OID_keyUsage) { /* * Get hold of the keyUsage bit string diff --git a/include/keys/x509-parser.h b/include/keys/x509-parser.h index 37436a5c7526..8e450befe3b9 100644 --- a/include/keys/x509-parser.h +++ b/include/keys/x509-parser.h @@ -36,6 +36,8 @@ struct x509_certificate { unsigned raw_subject_size; unsigned raw_skid_size; const void *raw_skid; /* Raw subjectKeyId in ASN.1 */ + const void *raw_san; /* Raw subjectAltName in ASN.1 */ + unsigned raw_san_size; unsigned index; bool seen; /* Infinite recursion prevention */ bool verified;