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 A9F9BC3A5A1 for ; Thu, 22 Aug 2019 17:47:30 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 7700323400 for ; Thu, 22 Aug 2019 17:47:30 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1566496050; bh=9wy+n8dSBS6TzbMdKj/1fdDR1OssBlS0d1bS0Qh32tg=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=SLG7mLtTSaQ5wLR1cB9Ny1A6+e2/ULAcgogmcWzN5uUVp8Z6UtAlAAb/abdAVaWAT ABxiZkWG7urHyWkjq0XT0hfGEeF2KfIcObHU3p2YMcxGNAfNhXTeXOCJCzitETpd7K hI32AvoC0332vFPBkBVTI+lHIbM7fW1Ls3tC6Nr0= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2393197AbfHVRr3 (ORCPT ); Thu, 22 Aug 2019 13:47:29 -0400 Received: from mail.kernel.org ([198.145.29.99]:41022 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2391388AbfHVRWg (ORCPT ); Thu, 22 Aug 2019 13:22:36 -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 6E4F2233FD; Thu, 22 Aug 2019 17:22:35 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1566494555; bh=9wy+n8dSBS6TzbMdKj/1fdDR1OssBlS0d1bS0Qh32tg=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=kMvhU1+HbAAscoGzf1pOqOEP+Pjdvf6XVS9hXiEffVDRKSc8yfR1p7LB4hfWTiO76 V//bNDfZ38zEqR0f6dE+VqaxWWM43UeeXfXtmz19ixJTSt1eH05qq/2cfgOXRo5UHa vmPbhkoSx4Qtl4ocJ6/FcjQH8ME1FoNeBXuiVaqc= 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 4.4 41/78] Input: kbtab - sanity check for endpoint type Date: Thu, 22 Aug 2019 10:18:45 -0700 Message-Id: <20190822171833.231567998@linuxfoundation.org> X-Mailer: git-send-email 2.23.0 In-Reply-To: <20190822171832.012773482@linuxfoundation.org> References: <20190822171832.012773482@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 @@ -125,6 +125,10 @@ 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) @@ -164,8 +168,6 @@ 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,