From patchwork Fri Jul 23 09:14:02 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: =?utf-8?q?Marek_Beh=C3=BAn?= X-Patchwork-Id: 1509053 X-Patchwork-Delegate: sr@denx.de Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Authentication-Results: ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=lists.denx.de (client-ip=2a01:238:438b:c500:173d:9f52:ddab:ee01; helo=phobos.denx.de; envelope-from=u-boot-bounces@lists.denx.de; receiver=) Authentication-Results: ozlabs.org; dkim=pass (1024-bit key; secure) header.d=nic.cz header.i=@nic.cz header.a=rsa-sha256 header.s=default header.b=nmI+UgkR; dkim-atps=neutral Received: from phobos.denx.de (phobos.denx.de [IPv6:2a01:238:438b:c500:173d:9f52:ddab:ee01]) (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 ozlabs.org (Postfix) with ESMTPS id 4GWNwY6VbSz9sRN for ; Fri, 23 Jul 2021 19:16:13 +1000 (AEST) Received: from h2850616.stratoserver.net (localhost [IPv6:::1]) by phobos.denx.de (Postfix) with ESMTP id 8D48782D7E; Fri, 23 Jul 2021 11:15:32 +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="nmI+UgkR"; dkim-atps=neutral Received: by phobos.denx.de (Postfix, from userid 109) id 4B9B982D80; Fri, 23 Jul 2021 11:14:55 +0200 (CEST) X-Spam-Checker-Version: SpamAssassin 3.4.2 (2018-09-13) on phobos.denx.de X-Spam-Level: X-Spam-Status: No, score=-2.0 required=5.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,SPF_HELO_NONE autolearn=ham autolearn_force=no version=3.4.2 Received: from mail.nic.cz (mail.nic.cz [217.31.204.67]) (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 D008482D7C for ; Fri, 23 Jul 2021 11:14:46 +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 61B5A140952; Fri, 23 Jul 2021 11:14:46 +0200 (CEST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=nic.cz; s=default; t=1627031686; bh=rA9mTSn9rCWl2Fo1RLxFPQwyV1pnxS2BZ/Jb81QBNmQ=; h=From:To:Date; b=nmI+UgkRU+swR88HuzYTJUOPUnzBWvKYbhvK7Yog1/5WAtV5O/c9Jj/2yfIW5eeXG ZSaOGLvLBATl1HJbrayKWCxnS7lGYJ83N47O81yj01vi0JXFlF2f8X1EycUnPOKrKT Q2FppxrMDRuCgC+Pu+fa2vfwjbzHCgsuIaQbLCXg= From: =?utf-8?q?Marek_Beh=C3=BAn?= To: u-boot@lists.denx.de, Chris Packham , Stefan Roese , Baruch Siach , Chris Packham Cc: Dennis Gilmore , Mario Six , Jon Nettleton , =?utf-8?q?Pali_Roh=C3=A1r?= , =?utf-8?q?Marek_Beh=C3=BAn?= Subject: [PATCH u-boot-mvebu v3 08/41] tools: kwbimage: Validate extended headers of v1 images Date: Fri, 23 Jul 2021 11:14:02 +0200 Message-Id: <20210723091435.20388-9-marek.behun@nic.cz> X-Mailer: git-send-email 2.31.1 In-Reply-To: <20210723091435.20388-1-marek.behun@nic.cz> References: <20210723091435.20388-1-marek.behun@nic.cz> MIME-Version: 1.0 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 Add basic checks for extended headers of v1 images. Signed-off-by: Pali Rohár Reviewed-by: Marek Behún Reviewed-by: Stefan Roese Reviewed-by: Chris Packham Tested-by: Chris Packham --- tools/kwbimage.c | 29 +++++++++++++++++++++++++++++ 1 file changed, 29 insertions(+) diff --git a/tools/kwbimage.c b/tools/kwbimage.c index 4d9d818538..5d017dd5ac 100644 --- a/tools/kwbimage.c +++ b/tools/kwbimage.c @@ -1670,6 +1670,35 @@ 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; + + if (mhdr->ext & 0x1) { + uint32_t ohdr_size; + struct opt_hdr_v1 *ohdr = (struct opt_hdr_v1 *) + (ptr + sizeof(*mhdr)); + + while (1) { + if ((uint8_t *)ohdr + sizeof(*ohdr) > + (uint8_t *)mhdr + header_size) + return -FDT_ERR_BADSTRUCTURE; + + ohdr_size = (ohdr->headersz_msb << 16) | + le16_to_cpu(ohdr->headersz_lsb); + + if (ohdr_size < 8 || + (uint8_t *)ohdr + ohdr_size > + (uint8_t *)mhdr + header_size) + return -FDT_ERR_BADSTRUCTURE; + + if (!(*((uint8_t *)ohdr + ohdr_size - 4) & 0x1)) + break; + ohdr = (struct opt_hdr_v1 *)((uint8_t *)ohdr + + ohdr_size); + } + } + } + return 0; }