Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-8.5 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_PASS,USER_AGENT_MUTT autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 5CB41C10F12 for ; Mon, 15 Apr 2019 15:45:46 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 37E4C20880 for ; Mon, 15 Apr 2019 15:45:46 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727050AbfDOPpp (ORCPT ); Mon, 15 Apr 2019 11:45:45 -0400 Received: from gateway23.websitewelcome.com ([192.185.49.124]:34516 "EHLO gateway23.websitewelcome.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726034AbfDOPpo (ORCPT ); Mon, 15 Apr 2019 11:45:44 -0400 X-Greylist: delayed 1500 seconds by postgrey-1.27 at vger.kernel.org; Mon, 15 Apr 2019 11:45:44 EDT Received: from cm14.websitewelcome.com (cm14.websitewelcome.com [100.42.49.7]) by gateway23.websitewelcome.com (Postfix) with ESMTP id B455C13C29 for ; Mon, 15 Apr 2019 09:56:51 -0500 (CDT) Received: from gator4166.hostgator.com ([108.167.133.22]) by cmsmtp with SMTP id G32RhZFVJ2qH7G32RhvLYw; Mon, 15 Apr 2019 09:56:51 -0500 X-Authority-Reason: nr=8 Received: from [189.250.55.242] (port=43596 helo=embeddedor) by gator4166.hostgator.com with esmtpa (Exim 4.91) (envelope-from ) id 1hG32Q-001eJq-Be; Mon, 15 Apr 2019 09:56:51 -0500 Date: Mon, 15 Apr 2019 09:56:46 -0500 From: "Gustavo A. R. Silva" To: Maya Erez , Kalle Valo , "David S. Miller" , Vladimir Kondratiev Cc: linux-wireless@vger.kernel.org, wil6210@qti.qualcomm.com, netdev@vger.kernel.org, linux-kernel@vger.kernel.org, "Gustavo A. R. Silva" Subject: [PATCH] wil6210: fix potential out-of-bounds read Message-ID: <20190415145646.GA16597@embeddedor> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline User-Agent: Mutt/1.9.4 (2018-02-28) X-AntiAbuse: This header was added to track abuse, please include it with any abuse report X-AntiAbuse: Primary Hostname - gator4166.hostgator.com X-AntiAbuse: Original Domain - vger.kernel.org X-AntiAbuse: Originator/Caller UID/GID - [47 12] / [47 12] X-AntiAbuse: Sender Address Domain - embeddedor.com X-BWhitelist: no X-Source-IP: 189.250.55.242 X-Source-L: No X-Exim-ID: 1hG32Q-001eJq-Be X-Source: X-Source-Args: X-Source-Dir: X-Source-Sender: (embeddedor) [189.250.55.242]:43596 X-Source-Auth: gustavo@embeddedor.com X-Email-Count: 5 X-Source-Cap: Z3V6aWRpbmU7Z3V6aWRpbmU7Z2F0b3I0MTY2Lmhvc3RnYXRvci5jb20= X-Local-Domain: yes Sender: linux-wireless-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-wireless@vger.kernel.org Notice that *rc* can evaluate to up to 5, include/linux/netdevice.h: enum gro_result { GRO_MERGED, GRO_MERGED_FREE, GRO_HELD, GRO_NORMAL, GRO_DROP, GRO_CONSUMED, }; typedef enum gro_result gro_result_t; In case *rc* evaluates to 5, we end up having an out-of-bounds read at drivers/net/wireless/ath/wil6210/txrx.c:821: wil_dbg_txrx(wil, "Rx complete %d bytes => %s\n", len, gro_res_str[rc]); Fix this by adding element "GRO_CONSUMED" to array gro_res_str. Addresses-Coverity-ID: 1444666 ("Out-of-bounds read") Fixes: 194b482b5055 ("wil6210: Debug print GRO Rx result") Signed-off-by: Gustavo A. R. Silva --- drivers/net/wireless/ath/wil6210/txrx.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/net/wireless/ath/wil6210/txrx.c b/drivers/net/wireless/ath/wil6210/txrx.c index 4ccfd1404458..d74837cce67f 100644 --- a/drivers/net/wireless/ath/wil6210/txrx.c +++ b/drivers/net/wireless/ath/wil6210/txrx.c @@ -750,6 +750,7 @@ void wil_netif_rx_any(struct sk_buff *skb, struct net_device *ndev) [GRO_HELD] = "GRO_HELD", [GRO_NORMAL] = "GRO_NORMAL", [GRO_DROP] = "GRO_DROP", + [GRO_CONSUMED] = "GRO_CONSUMED", }; wil->txrx_ops.get_netif_rx_params(skb, &cid, &security); -- 2.21.0