From patchwork Thu Dec 3 08:41:13 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Dan Carpenter X-Patchwork-Id: 11948229 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=-17.2 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_CR_TRAILER,INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS, UNPARSEABLE_RELAY 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 EB6BFC63777 for ; Thu, 3 Dec 2020 08:42:41 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 9A25420C56 for ; Thu, 3 Dec 2020 08:42:41 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2388387AbgLCImM (ORCPT ); Thu, 3 Dec 2020 03:42:12 -0500 Received: from aserp2130.oracle.com ([141.146.126.79]:56076 "EHLO aserp2130.oracle.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2388270AbgLCImL (ORCPT ); Thu, 3 Dec 2020 03:42:11 -0500 Received: from pps.filterd (aserp2130.oracle.com [127.0.0.1]) by aserp2130.oracle.com (8.16.0.42/8.16.0.42) with SMTP id 0B38Z8Tt104377; Thu, 3 Dec 2020 08:41:22 GMT DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=oracle.com; h=date : from : to : cc : subject : message-id : mime-version : content-type; s=corp-2020-01-29; bh=z4UsB695l8jGpTz1SJLTMgskpbp4iNCiOUXV4l4A9SE=; b=FTWY2h+qUr3ngB7ULbzVv9y7qm8yynxK17+3Dk6w+RQmcwRHYB/vJ2MGA7A3ly+hcad+ L6EMqKrKFNusGoXejsV7vQZ9ZGWLD8+QLS22uclWIYfVzB61khkiGbRGJh8YDRmqlk6d 3I6GSXwUo40AkU7FUQaoQca7TQfSupMPygp8CPC1RRp13ggBZzKaqfmdX3Tq6d9cgglv c1z1nbDGlQ6siZL9UsBrjjjVDUPNy+qE/5KNlbdR2U9kxbzXZAiduZtGunycr9hm8F5v y5Ob7x3XD05yRJo3JpJHfViQa6HPDbI1BBLh2iF1OcpRe+0ceBpR23nOxrFxgM7pNTCi RQ== Received: from userp3020.oracle.com (userp3020.oracle.com [156.151.31.79]) by aserp2130.oracle.com with ESMTP id 353c2b4nks-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=FAIL); Thu, 03 Dec 2020 08:41:22 +0000 Received: from pps.filterd (userp3020.oracle.com [127.0.0.1]) by userp3020.oracle.com (8.16.0.42/8.16.0.42) with SMTP id 0B38eM4K133029; Thu, 3 Dec 2020 08:41:21 GMT Received: from aserv0121.oracle.com (aserv0121.oracle.com [141.146.126.235]) by userp3020.oracle.com with ESMTP id 3540avpwd6-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Thu, 03 Dec 2020 08:41:21 +0000 Received: from abhmp0001.oracle.com (abhmp0001.oracle.com [141.146.116.7]) by aserv0121.oracle.com (8.14.4/8.13.8) with ESMTP id 0B38fKKk020872; Thu, 3 Dec 2020 08:41:20 GMT Received: from mwanda (/102.36.221.92) by default (Oracle Beehive Gateway v4.0) with ESMTP ; Thu, 03 Dec 2020 00:41:19 -0800 Date: Thu, 3 Dec 2020 11:41:13 +0300 From: Dan Carpenter To: Chunfeng Yun Cc: Greg Kroah-Hartman , linux-usb@vger.kernel.org, linux-mediatek@lists.infradead.org, kernel-janitors@vger.kernel.org Subject: [PATCH 1/2] usb: mtu3: fix memory corruption in mtu3_debugfs_regset() Message-ID: MIME-Version: 1.0 Content-Disposition: inline X-Mailer: git-send-email haha only kidding X-Proofpoint-Virus-Version: vendor=nai engine=6000 definitions=9823 signatures=668682 X-Proofpoint-Spam-Details: rule=notspam policy=default score=0 mlxlogscore=999 bulkscore=0 phishscore=0 mlxscore=0 adultscore=0 malwarescore=0 suspectscore=0 spamscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2009150000 definitions=main-2012030053 X-Proofpoint-Virus-Version: vendor=nai engine=6000 definitions=9823 signatures=668682 X-Proofpoint-Spam-Details: rule=notspam policy=default score=0 suspectscore=0 lowpriorityscore=0 clxscore=1011 bulkscore=0 mlxlogscore=999 phishscore=0 malwarescore=0 spamscore=0 adultscore=0 mlxscore=0 priorityscore=1501 impostorscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2009150000 definitions=main-2012030052 Precedence: bulk List-ID: X-Mailing-List: linux-usb@vger.kernel.org This code is using the wrong sizeof() so it does not allocate enough memory. It allocates 32 bytes but 72 are required. That will lead to memory corruption. Fixes: ae07809255d3 ("usb: mtu3: add debugfs interface files") Signed-off-by: Dan Carpenter --- drivers/usb/mtu3/mtu3_debugfs.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/usb/mtu3/mtu3_debugfs.c b/drivers/usb/mtu3/mtu3_debugfs.c index fdeade6254ae..7537bfd651af 100644 --- a/drivers/usb/mtu3/mtu3_debugfs.c +++ b/drivers/usb/mtu3/mtu3_debugfs.c @@ -127,7 +127,7 @@ static void mtu3_debugfs_regset(struct mtu3 *mtu, void __iomem *base, struct debugfs_regset32 *regset; struct mtu3_regset *mregs; - mregs = devm_kzalloc(mtu->dev, sizeof(*regset), GFP_KERNEL); + mregs = devm_kzalloc(mtu->dev, sizeof(*mregs), GFP_KERNEL); if (!mregs) return;