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=-0.8 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE, SPF_PASS autolearn=no 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 5FF32C43603 for ; Thu, 12 Dec 2019 10:01:57 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 217E922527 for ; Thu, 12 Dec 2019 10:01:57 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1576144917; bh=yIklkQTYg4cUAYyq+XgrD7VI5BaTtq+Mvzd3yt5WteU=; h=Date:From:To:Cc:Subject:References:In-Reply-To:List-ID:From; b=MYa2beNUz/CLeMGtsT6G7TukLWXkQsCdqWaADXCcDYT8vkxFtfOzVeM0mTDZOoT7f oUHWQ9MkLHtdousfH/Ip9E5RlQ9rRUmEMI1TjIEN7bCZIjSACShaQJAwSXQI9fRYAN Cqz+aru0yXJ6F6VN8hg+3yW9HhJaOIY+DCv/CK44= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728348AbfLLKB4 (ORCPT ); Thu, 12 Dec 2019 05:01:56 -0500 Received: from mail.kernel.org ([198.145.29.99]:52730 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726382AbfLLKB4 (ORCPT ); Thu, 12 Dec 2019 05:01:56 -0500 Received: from localhost (83-86-89-107.cable.dynamic.v4.ziggo.nl [83.86.89.107]) (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 99DBF206DA; Thu, 12 Dec 2019 10:01:55 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1576144916; bh=yIklkQTYg4cUAYyq+XgrD7VI5BaTtq+Mvzd3yt5WteU=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=uRnLenUhqWTu3Qbb0Qk1z6ERib48rzV9kOaMcRz2w21mkJj5mpQ6gYGnQhSA4wIu/ aEuMQfi1KPnBhSPlleW4l1a4RZou/wwhy1GZAokrRuCdQNeVmeIJ9SMG4/uA+bKlgY JCN1w50AJCYK698/6ifDbhoPOhmFN9jaXmBXjuHk= Date: Thu, 12 Dec 2019 11:01:53 +0100 From: Greg KH To: Zhiqiang Liu Cc: tglx@linutronix.de, crope@iki.fi, linux-media@vger.kernel.org, rfontana@redhat.com, erik.andren@gmail.com, hverkuil@xs4all.nl, brijohn@gmail.com, lcostantino@gmail.com, suweifeng1@huawei.com, Mingfangsen , guiyao@huawei.com Subject: Re: [PATCH] media: usb/cpia2: fix start_offset+size Integer Overflow in, cpia2_remap_buffer Message-ID: <20191212100153.GA1468094@kroah.com> References: <83ed0748-634d-4146-d216-53681bc3b553@huawei.com> <20191211075745.GA403571@kroah.com> <20191212074723.GC1368279@kroah.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: Sender: linux-media-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-media@vger.kernel.org On Thu, Dec 12, 2019 at 05:40:54PM +0800, Zhiqiang Liu wrote: > > > On 2019/12/12 15:47, Greg KH wrote: > > On Thu, Dec 12, 2019 at 09:48:44AM +0800, Zhiqiang Liu wrote: > >> Omer Shalev have given a example which can trigger the CVE. > >> Example link: https://deshal3v.github.io/blog/kernel-research/mmap_exploitation > > > > That "example" was run on a kernel without the above mentioned commit to > > fix all of this. > > > > Have you tried this on the latest kernel release and succeeded? > > > > thanks, > > > > greg k-h > > > > Thanks for patiently answering my question. > Actually, I have missed the Omer's commit. As pennance, you can go revoke that CVE so this doesn't come up again in a few months from someone else :) thanks, greg k-h