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=-6.8 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT 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 92FBCC3A5A1 for ; Thu, 22 Aug 2019 17:33:14 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 60A572064A for ; Thu, 22 Aug 2019 17:33:14 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1566495194; bh=H9PxVcmkwzH7ZZsM5nkJr9QnieR3VHq7pO6yyAPZ9XM=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=e6kRUxYDqMxZX9TCqQuype0e8dtLw0Ge5TCOOckwg+jOzeD94M0vcUfxSlIn6a1fz 7chMV8OS4o3mb4bVIZUgadPR+9CY2l54eBBbucp7slRgEEgV43iGTcJ+Xrk6IqA0qh A9MoYGhw9SCcGWJl2DAogd1Sc2Sy8G8a5u8hP2PU= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2404018AbfHVRdN (ORCPT ); Thu, 22 Aug 2019 13:33:13 -0400 Received: from mail.kernel.org ([198.145.29.99]:49230 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2391842AbfHVRZc (ORCPT ); Thu, 22 Aug 2019 13:25:32 -0400 Received: from localhost (wsip-184-188-36-2.sd.sd.cox.net [184.188.36.2]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id C9F3C2341E; Thu, 22 Aug 2019 17:25:30 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1566494730; bh=H9PxVcmkwzH7ZZsM5nkJr9QnieR3VHq7pO6yyAPZ9XM=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=aCi7tSu0+LWSh7WZQjPGGU/Iw8ce6snzAnQMvvBeW2LMsYHoyTP+T2p9xT3EShLol V4vp/L83LPpFKSkGkeMs4Sm0PA0szWJ9WHOBwEqFuNgtqsFoqrb9cr0+/8qYN5reB8 bCarBRCWp9WTPexOiWioqbxKTqhlRogma9coIHbk= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, syzbot+c7df50363aaff50aa363@syzkaller.appspotmail.com, Oliver Neukum , Dmitry Torokhov Subject: [PATCH 4.19 21/85] Input: kbtab - sanity check for endpoint type Date: Thu, 22 Aug 2019 10:18:54 -0700 Message-Id: <20190822171732.079738646@linuxfoundation.org> X-Mailer: git-send-email 2.23.0 In-Reply-To: <20190822171731.012687054@linuxfoundation.org> References: <20190822171731.012687054@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Oliver Neukum commit c88090dfc84254fa149174eb3e6a8458de1912c4 upstream. The driver should check whether the endpoint it uses has the correct type. Reported-by: syzbot+c7df50363aaff50aa363@syzkaller.appspotmail.com Signed-off-by: Oliver Neukum Signed-off-by: Dmitry Torokhov Signed-off-by: Greg Kroah-Hartman --- drivers/input/tablet/kbtab.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) --- a/drivers/input/tablet/kbtab.c +++ b/drivers/input/tablet/kbtab.c @@ -116,6 +116,10 @@ static int kbtab_probe(struct usb_interf if (intf->cur_altsetting->desc.bNumEndpoints < 1) return -ENODEV; + endpoint = &intf->cur_altsetting->endpoint[0].desc; + if (!usb_endpoint_is_int_in(endpoint)) + return -ENODEV; + kbtab = kzalloc(sizeof(struct kbtab), GFP_KERNEL); input_dev = input_allocate_device(); if (!kbtab || !input_dev) @@ -154,8 +158,6 @@ static int kbtab_probe(struct usb_interf input_set_abs_params(input_dev, ABS_Y, 0, 0x1750, 4, 0); input_set_abs_params(input_dev, ABS_PRESSURE, 0, 0xff, 0, 0); - endpoint = &intf->cur_altsetting->endpoint[0].desc; - usb_fill_int_urb(kbtab->irq, dev, usb_rcvintpipe(dev, endpoint->bEndpointAddress), kbtab->data, 8,