From patchwork Wed Sep 6 15:49:37 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Denis V. Lunev" X-Patchwork-Id: 1830457 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@legolas.ozlabs.org Authentication-Results: legolas.ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=nongnu.org (client-ip=209.51.188.17; helo=lists.gnu.org; envelope-from=qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org; receiver=patchwork.ozlabs.org) Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-ECDSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by legolas.ozlabs.org (Postfix) with ESMTPS id 4Rgn076yb3z1yh5 for ; Thu, 7 Sep 2023 01:50:47 +1000 (AEST) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1qdumw-0007CX-0U; Wed, 06 Sep 2023 11:49:54 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1qdums-0007Ag-8B; Wed, 06 Sep 2023 11:49:50 -0400 Received: from relay.virtuozzo.com ([130.117.225.111]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1qdump-0002xv-8m; Wed, 06 Sep 2023 11:49:49 -0400 Received: from ch-vpn.virtuozzo.com ([130.117.225.6] helo=iris.sw.ru) by relay.virtuozzo.com with esmtp (Exim 4.96) (envelope-from ) id 1qduji-007L3X-1Y; Wed, 06 Sep 2023 17:49:33 +0200 From: "Denis V. Lunev" To: qemu-devel@nongnu.org Cc: qemu-block@nongnu.org, stefanha@gmail.com, Alexander Ivanov , "Denis V . Lunev" Subject: [PULL 04/18] parallels: Check if data_end greater than the file size Date: Wed, 6 Sep 2023 17:49:37 +0200 Message-Id: <20230906154942.656537-5-den@openvz.org> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20230906154942.656537-1-den@openvz.org> References: <20230906154942.656537-1-den@openvz.org> MIME-Version: 1.0 Received-SPF: pass client-ip=130.117.225.111; envelope-from=den@openvz.org; helo=relay.virtuozzo.com X-Spam_score_int: -18 X-Spam_score: -1.9 X-Spam_bar: - X-Spam_report: (-1.9 / 5.0 requ) BAYES_00=-1.9, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org From: Alexander Ivanov Initially data_end is set to the data_off image header field and must not be greater than the file size. Signed-off-by: Alexander Ivanov Reviewed-by: Denis V. Lunev Signed-off-by: Denis V. Lunev --- block/parallels.c | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/block/parallels.c b/block/parallels.c index 3c0dca3dbf..6a3d41373a 100644 --- a/block/parallels.c +++ b/block/parallels.c @@ -874,6 +874,11 @@ static int parallels_open(BlockDriverState *bs, QDict *options, int flags, */ s->header_size = size; } + if (s->data_end > file_nb_sectors) { + error_setg(errp, "Invalid image: incorrect data_off field"); + ret = -EINVAL; + goto fail; + } ret = bdrv_pread(bs->file, 0, s->header_size, s->header, 0); if (ret < 0) {