Received: by 2002:a05:6358:d09b:b0:dc:cd0c:909e with SMTP id jc27csp3262358rwb; Sat, 3 Dec 2022 01:49:15 -0800 (PST) X-Google-Smtp-Source: AA0mqf7RjY9D+hobXV8HCWvVIFbyQqopArSkY2fKuHKRlKwYmCFdm2P7ozRZcE0nPAPrDLzY9m+o X-Received: by 2002:aa7:d85a:0:b0:46b:81a8:1ff6 with SMTP id f26-20020aa7d85a000000b0046b81a81ff6mr18319490eds.174.1670060954955; Sat, 03 Dec 2022 01:49:14 -0800 (PST) ARC-Seal: i=1; a=rsa-sha256; t=1670060954; cv=none; d=google.com; s=arc-20160816; b=tl6Hq87dj37e0ewK9BbSuaWnMdANhyurYU20yGWbVzkOPYOOshmLsa9ht1haQdwAk6 +hAIOMiHLBXLvQiBt71aLjf8Q+sS7qnXZSJHYDBdGqeUf+8zonQcGDaI4kcPIb5DZG5s CkwJHTUQ+LB0gRhAP812Udfd58SR05kdb/uQYTGUIx+FfpE1by9X002kRjALzvuAgycw agIYVJEAxOH6+ougmNRD9QXk0cYvGckA18QuQ4Xd+dRYXBV1xOGe3zEp+VJGiyWcJJ0V tao62dgHVbgSfBFa59ucKeQUXL8KyXXzR83x+6kmOgnv07gM3OaMf/cFi9i7pVvyGTrq Ppuw== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:mime-version:message-id:date:subject:cc:to:from; bh=3uKlaeXwBhmRxA3B/tuQA0745VGuYDNooDe4HAyNmGw=; b=T+sHq9yHeOruWz/X5+pLFzf/aiHfJVgYxdcjTgJ5uUsnYYBsnuboUNf02IRqr+KDmQ +3UIeTU79clHCVRrhIcxI8CV1prjxSONUt6LN9dZu+JgEi5mojh1J3n0fKkSoj5/zG3r TCrIONJ9zj+Mk0LGHZ/iE5ypX8vGwidKVV1OSLNdbQXyiIEZdzCHGrfc4SMzzZPYPhUC S7Ou168pGkurJzTiikoOj47kRCTXe/465MYeYAIF3Z/PNewpKm3hVYCtss64THmTruzE NA5ddTc4bN7mriCbO2DN1Kg7N9podsdUSFmooRwiFk6XUBOwarKvPCuqEMEwmIsD3OW8 eyzg== ARC-Authentication-Results: i=1; mx.google.com; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=fail (p=QUARANTINE sp=QUARANTINE dis=NONE) header.from=huawei.com Return-Path: Received: from out1.vger.email (out1.vger.email. [2620:137:e000::1:20]) by mx.google.com with ESMTP id m5-20020a056402430500b0046b0205ab58si2970540edc.580.2022.12.03.01.48.53; Sat, 03 Dec 2022 01:49:14 -0800 (PST) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) client-ip=2620:137:e000::1:20; Authentication-Results: mx.google.com; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=fail (p=QUARANTINE sp=QUARANTINE dis=NONE) header.from=huawei.com Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229468AbiLCJae (ORCPT + 83 others); Sat, 3 Dec 2022 04:30:34 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:44258 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229447AbiLCJac (ORCPT ); Sat, 3 Dec 2022 04:30:32 -0500 Received: from szxga02-in.huawei.com (szxga02-in.huawei.com [45.249.212.188]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 25FCB5B86D; Sat, 3 Dec 2022 01:30:28 -0800 (PST) Received: from canpemm500007.china.huawei.com (unknown [172.30.72.54]) by szxga02-in.huawei.com (SkyGuard) with ESMTP id 4NPPfG13NyzRnvp; Sat, 3 Dec 2022 17:29:42 +0800 (CST) Received: from localhost (10.174.179.215) by canpemm500007.china.huawei.com (7.192.104.62) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2375.31; Sat, 3 Dec 2022 17:30:26 +0800 From: YueHaibing To: , , , , , , , CC: , , , YueHaibing Subject: [PATCH net] ravb: Fix potential use-after-free in ravb_rx_gbeth() Date: Sat, 3 Dec 2022 17:29:41 +0800 Message-ID: <20221203092941.10880-1-yuehaibing@huawei.com> X-Mailer: git-send-email 2.10.2.windows.1 MIME-Version: 1.0 Content-Type: text/plain X-Originating-IP: [10.174.179.215] X-ClientProxiedBy: dggems703-chm.china.huawei.com (10.3.19.180) To canpemm500007.china.huawei.com (7.192.104.62) X-CFilter-Loop: Reflected X-Spam-Status: No, score=-4.2 required=5.0 tests=BAYES_00,RCVD_IN_DNSWL_MED, SPF_HELO_NONE,SPF_PASS autolearn=ham autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org The skb is delivered to napi_gro_receive() which may free it, after calling this, dereferencing skb may trigger use-after-free. Fixes: 1c59eb678cbd ("ravb: Fillup ravb_rx_gbeth() stub") Signed-off-by: YueHaibing --- drivers/net/ethernet/renesas/ravb_main.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/net/ethernet/renesas/ravb_main.c b/drivers/net/ethernet/renesas/ravb_main.c index 6bc923326268..33f723a9f471 100644 --- a/drivers/net/ethernet/renesas/ravb_main.c +++ b/drivers/net/ethernet/renesas/ravb_main.c @@ -841,7 +841,7 @@ static bool ravb_rx_gbeth(struct net_device *ndev, int *quota, int q) napi_gro_receive(&priv->napi[q], priv->rx_1st_skb); stats->rx_packets++; - stats->rx_bytes += priv->rx_1st_skb->len; + stats->rx_bytes += pkt_len; break; } } -- 2.34.1