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Received-SPF: Pass (protection.outlook.com: domain of amd.com designates 165.204.84.17 as permitted sender) receiver=protection.outlook.com; client-ip=165.204.84.17; helo=SATLEXMB04.amd.com; Received: from SATLEXMB04.amd.com (165.204.84.17) by DM6NAM11FT039.mail.protection.outlook.com (10.13.172.83) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.20.4608.15 via Frontend Transport; Tue, 19 Oct 2021 14:31:51 +0000 Received: from localhost (10.180.168.240) by SATLEXMB04.amd.com (10.181.40.145) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2308.15; Tue, 19 Oct 2021 09:31:50 -0500 From: Michael Roth To: CC: , Gerd Hoffmann , Chen Zhe , Tan Jingguo , =?utf-8?q?Philippe_Mathieu-Daud=C3=A9?= Subject: [PATCH 52/64] uas: add stream number sanity checks. Date: Tue, 19 Oct 2021 09:09:32 -0500 Message-ID: <20211019140944.152419-53-michael.roth@amd.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20211019140944.152419-1-michael.roth@amd.com> References: <20211019140944.152419-1-michael.roth@amd.com> MIME-Version: 1.0 X-Originating-IP: [10.180.168.240] X-ClientProxiedBy: SATLEXMB04.amd.com (10.181.40.145) To SATLEXMB04.amd.com (10.181.40.145) X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-Office365-Filtering-Correlation-Id: 4c161e27-c585-4ab0-028a-08d9930d30fb X-MS-TrafficTypeDiagnostic: BY5PR12MB3923: X-Microsoft-Antispam-PRVS: X-MS-Oob-TLC-OOBClassifiers: OLM:303; X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0; X-Microsoft-Antispam-Message-Info: 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 X-Forefront-Antispam-Report: CIP:165.204.84.17; CTRY:US; LANG:en; SCL:1; SRV:; IPV:CAL; SFV:NSPM; H:SATLEXMB04.amd.com; PTR:InfoDomainNonexistent; CAT:NONE; SFS:(4636009)(36840700001)(46966006)(44832011)(336012)(83380400001)(2616005)(426003)(508600001)(5660300002)(70206006)(6916009)(356005)(1076003)(81166007)(70586007)(8936002)(8676002)(47076005)(54906003)(36860700001)(2906002)(6666004)(36756003)(86362001)(4326008)(16526019)(186003)(26005)(82310400003)(316002)(36900700001); DIR:OUT; SFP:1101; X-OriginatorOrg: amd.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 19 Oct 2021 14:31:51.4430 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: 4c161e27-c585-4ab0-028a-08d9930d30fb X-MS-Exchange-CrossTenant-Id: 3dd8961f-e488-4e60-8e11-a82d994e183d X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=3dd8961f-e488-4e60-8e11-a82d994e183d; Ip=[165.204.84.17]; Helo=[SATLEXMB04.amd.com] X-MS-Exchange-CrossTenant-AuthSource: DM6NAM11FT039.eop-nam11.prod.protection.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: BY5PR12MB3923 Received-SPF: softfail client-ip=40.107.93.71; envelope-from=Michael.Roth@amd.com; helo=NAM10-DM6-obe.outbound.protection.outlook.com X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, RCVD_IN_MSPIKE_H2=-0.001, SPF_HELO_PASS=-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: 2.1.23 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" From: Gerd Hoffmann The device uses the guest-supplied stream number unchecked, which can lead to guest-triggered out-of-band access to the UASDevice->data3 and UASDevice->status3 fields. Add the missing checks. Fixes: CVE-2021-3713 Signed-off-by: Gerd Hoffmann Reported-by: Chen Zhe Reported-by: Tan Jingguo Reviewed-by: Philippe Mathieu-Daudé Message-Id: <20210818120505.1258262-2-kraxel@redhat.com> (cherry picked from commit 13b250b12ad3c59114a6a17d59caf073ce45b33a) Signed-off-by: Michael Roth --- hw/usb/dev-uas.c | 11 +++++++++++ 1 file changed, 11 insertions(+) diff --git a/hw/usb/dev-uas.c b/hw/usb/dev-uas.c index d2bd85d3f6..4866e0add6 100644 --- a/hw/usb/dev-uas.c +++ b/hw/usb/dev-uas.c @@ -840,6 +840,9 @@ static void usb_uas_handle_data(USBDevice *dev, USBPacket *p) } break; case UAS_PIPE_ID_STATUS: + if (p->stream > UAS_MAX_STREAMS) { + goto err_stream; + } if (p->stream) { QTAILQ_FOREACH(st, &uas->results, next) { if (st->stream == p->stream) { @@ -867,6 +870,9 @@ static void usb_uas_handle_data(USBDevice *dev, USBPacket *p) break; case UAS_PIPE_ID_DATA_IN: case UAS_PIPE_ID_DATA_OUT: + if (p->stream > UAS_MAX_STREAMS) { + goto err_stream; + } if (p->stream) { req = usb_uas_find_request(uas, p->stream); } else { @@ -902,6 +908,11 @@ static void usb_uas_handle_data(USBDevice *dev, USBPacket *p) p->status = USB_RET_STALL; break; } + +err_stream: + error_report("%s: invalid stream %d", __func__, p->stream); + p->status = USB_RET_STALL; + return; } static void usb_uas_unrealize(USBDevice *dev)