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Fri, 11 Jun 2021 12:30:33 +0000 From: Sebastian Urban To: linux-bluetooth@vger.kernel.org Cc: Sebastian Urban Subject: [PATCH BlueZ] gatt-client: Check length of notify multiple op Date: Fri, 11 Jun 2021 14:30:21 +0200 Message-Id: <20210611123021.21211-1-surban@surban.net> X-Mailer: git-send-email 2.25.1 Content-Transfer-Encoding: 8bit Content-Type: text/plain X-Originating-IP: [24.134.128.129] X-ClientProxiedBy: ZR0P278CA0116.CHEP278.PROD.OUTLOOK.COM (2603:10a6:910:20::13) To AM9P189MB1730.EURP189.PROD.OUTLOOK.COM (2603:10a6:20b:30c::17) MIME-Version: 1.0 X-MS-Exchange-MessageSentRepresentingType: 1 Received: from dino.localdomain (24.134.128.129) by ZR0P278CA0116.CHEP278.PROD.OUTLOOK.COM (2603:10a6:910:20::13) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.4219.20 via Frontend Transport; Fri, 11 Jun 2021 12:30:32 +0000 X-MS-PublicTrafficType: Email X-MS-Office365-Filtering-Correlation-Id: ca12ece0-f167-446c-8be9-08d92cd4b4df X-MS-TrafficTypeDiagnostic: AM9P189MB1714: X-MS-Exchange-Transport-Forked: True X-Microsoft-Antispam-PRVS: X-MS-Oob-TLC-OOBClassifiers: OLM:6790; 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Otherwise data may be read from beyond the end of the buffer. --- src/shared/gatt-client.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/src/shared/gatt-client.c b/src/shared/gatt-client.c index 9511ea8ca..094922486 100644 --- a/src/shared/gatt-client.c +++ b/src/shared/gatt-client.c @@ -2173,6 +2173,9 @@ static void notify_cb(struct bt_att_chan *chan, uint8_t opcode, length -= 2; pdu += 2; + if (data.len > length) + data.len = length; + data.data = pdu; queue_foreach(client->notify_list, notify_handler, -- 2.25.1