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=-18.8 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER, INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT 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 50EF9C07E9D for ; Mon, 19 Jul 2021 12:22:51 +0000 (UTC) Received: from phobos.denx.de (phobos.denx.de [85.214.62.61]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id C7E526113B for ; Mon, 19 Jul 2021 12:22:50 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org C7E526113B Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=nic.cz Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=u-boot-bounces@lists.denx.de Received: from h2850616.stratoserver.net (localhost [IPv6:::1]) by phobos.denx.de (Postfix) with ESMTP id 4D37C82C68; Mon, 19 Jul 2021 14:22:08 +0200 (CEST) Authentication-Results: phobos.denx.de; dmarc=pass (p=none dis=none) header.from=nic.cz Authentication-Results: phobos.denx.de; spf=pass smtp.mailfrom=u-boot-bounces@lists.denx.de Authentication-Results: phobos.denx.de; dkim=pass (1024-bit key; secure) header.d=nic.cz header.i=@nic.cz header.b="bvu4IHfB"; dkim-atps=neutral Received: by phobos.denx.de (Postfix, from userid 109) id 440BC82C26; Mon, 19 Jul 2021 14:21:50 +0200 (CEST) Received: from mail.nic.cz (mail.nic.cz [IPv6:2001:1488:800:400::400]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by phobos.denx.de (Postfix) with ESMTPS id 632D482C29 for ; Mon, 19 Jul 2021 14:21:42 +0200 (CEST) Authentication-Results: phobos.denx.de; dmarc=pass (p=none dis=none) header.from=nic.cz Authentication-Results: phobos.denx.de; spf=pass smtp.mailfrom=marek.behun@nic.cz Received: from dellmb.labs.office.nic.cz (unknown [IPv6:2001:1488:fffe:6:8747:7254:5571:3010]) by mail.nic.cz (Postfix) with ESMTPSA id F2852140992; Mon, 19 Jul 2021 14:21:41 +0200 (CEST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=nic.cz; s=default; t=1626697302; bh=zqaOwTqnc2OaHmnaW3n8pEDI1VryMnmzIFEiUA3UQUE=; h=From:To:Date; b=bvu4IHfBDYTUF9E6A69k0bA4LEWJGEp7xMzRuBSv8skU34CANx0H0U6qwxDRQmb9W kk0sAJLjowlcuEiinyePQ437FbUjpXhCDh3Wg61nnKPiRXsmWFP0RBKeT5/jRC2WnE I864AQZx0vqpQv1ynRFhDL9ox4BEc6Lu0pZmwffI= From: =?UTF-8?q?Marek=20Beh=C3=BAn?= To: u-boot@lists.denx.de, Chris Packham , Stefan Roese , Baruch Siach , Dirk Eibach , Chris Packham Cc: Dennis Gilmore , Mario Six , Jon Nettleton , =?UTF-8?q?Pali=20Roh=C3=A1r?= , =?UTF-8?q?Marek=20Beh=C3=BAn?= Subject: [PATCH u-boot-mvebu v2 09/41] tools: kwbimage: Validate data checksum of v1 images Date: Mon, 19 Jul 2021 14:20:32 +0200 Message-Id: <20210719122104.29698-10-marek.behun@nic.cz> X-Mailer: git-send-email 2.31.1 In-Reply-To: <20210719122104.29698-1-marek.behun@nic.cz> References: <20210719122104.29698-1-marek.behun@nic.cz> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit X-BeenThere: u-boot@lists.denx.de X-Mailman-Version: 2.1.34 Precedence: list List-Id: U-Boot discussion List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: u-boot-bounces@lists.denx.de Sender: "U-Boot" X-Virus-Scanned: clamav-milter 0.103.2 at phobos.denx.de X-Virus-Status: Clean From: Pali Rohár The data part of v1 images contains 32-bit checksum after the data. Validate whether this checksum is correct. Signed-off-by: Pali Rohár Reviewed-by: Marek Behún Reviewed-by: Stefan Roese Reviewed-by: Chris Packham Tested-by: Chris Packham --- tools/kwbimage.c | 43 +++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 43 insertions(+) diff --git a/tools/kwbimage.c b/tools/kwbimage.c index 5d017dd5ac..edda0ce7aa 100644 --- a/tools/kwbimage.c +++ b/tools/kwbimage.c @@ -1672,6 +1672,8 @@ static int kwbimage_verify_header(unsigned char *ptr, int image_size, if (image_version((void *)ptr) == 1) { struct main_hdr_v1 *mhdr = (struct main_hdr_v1 *)ptr; + uint32_t offset; + uint32_t size; if (mhdr->ext & 0x1) { uint32_t ohdr_size; @@ -1697,6 +1699,47 @@ static int kwbimage_verify_header(unsigned char *ptr, int image_size, ohdr_size); } } + + offset = le32_to_cpu(mhdr->srcaddr); + + /* + * For SATA srcaddr is specified in number of sectors. + * The main header is must be stored at sector number 1. + * This expects that sector size is 512 bytes and recalculates + * data offset to bytes relative to the main header. + */ + if (mhdr->blockid == IBR_HDR_SATA_ID) { + if (offset < 1) + return -FDT_ERR_BADSTRUCTURE; + offset -= 1; + offset *= 512; + } + + /* + * For SDIO srcaddr is specified in number of sectors. + * This expects that sector size is 512 bytes and recalculates + * data offset to bytes. + */ + if (mhdr->blockid == IBR_HDR_SDIO_ID) + offset *= 512; + + /* + * For PCIe srcaddr is always set to 0xFFFFFFFF. + * This expects that data starts after all headers. + */ + if (mhdr->blockid == IBR_HDR_PEX_ID && offset == 0xFFFFFFFF) + offset = header_size; + + if (offset > image_size || offset % 4 != 0) + return -FDT_ERR_BADSTRUCTURE; + + size = le32_to_cpu(mhdr->blocksize); + if (offset + size > image_size || size % 4 != 0) + return -FDT_ERR_BADSTRUCTURE; + + if (image_checksum32(ptr + offset, size - 4) != + *(uint32_t *)(ptr + offset + size - 4)) + return -FDT_ERR_BADSTRUCTURE; } return 0; -- 2.31.1