From mboxrd@z Thu Jan 1 00:00:00 1970 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=-2.8 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=ham 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 9B859C3279B for ; Sat, 30 Jun 2018 06:35:49 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 57D3F27A9E for ; Sat, 30 Jun 2018 06:35:49 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 57D3F27A9E Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=huawei.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754306AbeF3Gfr (ORCPT ); Sat, 30 Jun 2018 02:35:47 -0400 Received: from szxga06-in.huawei.com ([45.249.212.32]:59719 "EHLO huawei.com" rhost-flags-OK-FAIL-OK-FAIL) by vger.kernel.org with ESMTP id S1751861AbeF3Gfo (ORCPT ); Sat, 30 Jun 2018 02:35:44 -0400 Received: from DGGEMS406-HUB.china.huawei.com (unknown [172.30.72.60]) by Forcepoint Email with ESMTP id 9026B1630ED29; Sat, 30 Jun 2018 14:35:39 +0800 (CST) Received: from localhost (10.177.31.96) by DGGEMS406-HUB.china.huawei.com (10.3.19.206) with Microsoft SMTP Server id 14.3.382.0; Sat, 30 Jun 2018 14:35:34 +0800 From: YueHaibing To: , CC: , , , , , YueHaibing Subject: [PATCH v2] atmel: using strlcpy() to avoid possible buffer overflows Date: Sat, 30 Jun 2018 14:33:41 +0800 Message-ID: <20180630063341.9900-1-yuehaibing@huawei.com> X-Mailer: git-send-email 2.10.2.windows.1 MIME-Version: 1.0 Content-Type: text/plain X-Originating-IP: [10.177.31.96] X-CFilter-Loop: Reflected Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org 'firmware' is a module param which may been longer than firmware_id, so using strlcpy() to guard against overflows. Also priv is allocated with zeroed memory,no need to set firmware_id[0] to '\0'. v1 -> v2: remove priv->firmware_id[0] = '\0'; Signed-off-by: YueHaibing --- drivers/net/wireless/atmel/atmel.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) diff --git a/drivers/net/wireless/atmel/atmel.c b/drivers/net/wireless/atmel/atmel.c index b01dc34..cec715b 100644 --- a/drivers/net/wireless/atmel/atmel.c +++ b/drivers/net/wireless/atmel/atmel.c @@ -1516,10 +1516,9 @@ struct net_device *init_atmel_card(unsigned short irq, unsigned long port, priv->present_callback = card_present; priv->card = card; priv->firmware = NULL; - priv->firmware_id[0] = '\0'; priv->firmware_type = fw_type; if (firmware) /* module parameter */ - strcpy(priv->firmware_id, firmware); + strlcpy(priv->firmware_id, firmware, sizeof(priv->firmware_id)); priv->bus_type = card_present ? BUS_TYPE_PCCARD : BUS_TYPE_PCI; priv->station_state = STATION_STATE_DOWN; priv->do_rx_crc = 0; -- 2.7.0