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 Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 25CD4C433EF for ; Fri, 6 May 2022 16:15:23 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1443676AbiEFQSs (ORCPT ); Fri, 6 May 2022 12:18:48 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:54972 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1443671AbiEFQSq (ORCPT ); Fri, 6 May 2022 12:18:46 -0400 Received: from mail-pj1-x102d.google.com (mail-pj1-x102d.google.com [IPv6:2607:f8b0:4864:20::102d]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 7DED313F2D for ; Fri, 6 May 2022 09:15:03 -0700 (PDT) Received: by mail-pj1-x102d.google.com with SMTP id iq2-20020a17090afb4200b001d93cf33ae9so11205269pjb.5 for ; Fri, 06 May 2022 09:15:03 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel-dk.20210112.gappssmtp.com; s=20210112; h=message-id:date:mime-version:user-agent:subject:content-language:to :cc:references:from:in-reply-to:content-transfer-encoding; bh=w7Q6FHT5P7kuoH3lLIOpulNCMvZrKfSc9d1fbtcgZsM=; b=g0T98pkT0/A1yfrSdlv8Wdwab/TGcvY+QTB/bMbAaj13vbp6qOdkZnbYaMpuKRTQih uuclSGU5flfxHZMT3fPBhyg+nTeYyW816JYwNyfK64pDuBCNtg2FNEALJKMUTy6Xp156 oKqraAV/A4Tws0wva8qLJGbJWhVqJvobkRAZUvCUEDqLU7EwAtAPUJOuok2394XWj7Vi Gli1rqJKL95m6Ewf1Y5ZKXo5EnnZiCIEElEl1/0TE892AnYkXVuzfwHmolBdH2rxitGR ZIQz1X5lQUPs6fWmSoQNeI1Mi3qgilYl/Pdg9GznDnY6mSMpSZNGrNROn8g4blOuggte pLAQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:message-id:date:mime-version:user-agent:subject :content-language:to:cc:references:from:in-reply-to :content-transfer-encoding; bh=w7Q6FHT5P7kuoH3lLIOpulNCMvZrKfSc9d1fbtcgZsM=; b=7Y/bA0xSocrdSP6DEfUVUBPlWIbi7xZnO/tZt5nQZxqLu1xS4feI76GMCSL6uTNymp iJTVt/epPuBiZ1z3pAouNsj5055deCRRyDzlfBJd3L+sSU8UJo9orKV19CQ054Uh0qh3 mfymPJWSazYhOoVMeKLY0NOOyiLFU+kO/GaFLlqJFsiRhpBj8eX08nZx2qQ3JKvIzcFB FfwAUKF7+2z1BSS5iXgcfJIqxhAMlTVondvubedQ8y/ak/bZ4XoPGXMSGlt0rG6TULJJ Wji6pCUQ4PGnN9+Pv1e6zC6Hn8h8q9BBFYThljGuT6lPIOwTSz9xtAlcotho9Z4VgB07 8h9w== X-Gm-Message-State: AOAM531ndn862YqBnkEiIi424yq5s6muXfeiO+Z0WihhShlmfGlIViZ3 XxfpFCQXAlwo/e4SEl1D1sdoPA== X-Google-Smtp-Source: ABdhPJwPCvubHbHQnMQNJdaL6+neV5ypGRrKA9WYKHYQz09LFlORufQb/PW30SNBJ06GCJNJKJjFJg== X-Received: by 2002:a17:903:32c6:b0:15e:c1cc:2405 with SMTP id i6-20020a17090332c600b0015ec1cc2405mr4515091plr.117.1651853702959; Fri, 06 May 2022 09:15:02 -0700 (PDT) Received: from [192.168.4.166] (cpe-72-132-29-68.dc.res.rr.com. [72.132.29.68]) by smtp.gmail.com with ESMTPSA id lk17-20020a17090b33d100b001cd4989ff5esm3819354pjb.37.2022.05.06.09.15.01 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Fri, 06 May 2022 09:15:02 -0700 (PDT) Message-ID: <6c417ba7-d677-5076-5ce3-d3e174eb8899@kernel.dk> Date: Fri, 6 May 2022 10:15:01 -0600 MIME-Version: 1.0 User-Agent: Mozilla/5.0 (X11; Linux aarch64; rv:91.0) Gecko/20100101 Thunderbird/91.8.1 Subject: Re: linux-stable-5.10-y CVE-2022-1508 of io_uring module Content-Language: en-US To: Pavel Begunkov , Guo Xuenan Cc: lee.jones@linaro.org, linux-kernel@vger.kernel.org, io-uring@vger.kernel.org, yi.zhang@huawei.com, houtao1@huawei.com References: <20220505141159.3182874-1-guoxuenan@huawei.com> <7d54523e-372b-759b-1ebb-e0dbc181f18d@kernel.dk> <31ae3426-b835-3a3f-f6d1-aecad24066e8@gmail.com> From: Jens Axboe In-Reply-To: <31ae3426-b835-3a3f-f6d1-aecad24066e8@gmail.com> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit Precedence: bulk List-ID: X-Mailing-List: io-uring@vger.kernel.org On 5/6/22 9:57 AM, Pavel Begunkov wrote: > On 5/6/22 03:16, Jens Axboe wrote: >> On 5/5/22 8:11 AM, Guo Xuenan wrote: >>> Hi, Pavel & Jens >>> >>> CVE-2022-1508[1] contains an patch[2] of io_uring. As Jones reported, >>> it is not enough only apply [2] to stable-5.10. >>> Io_uring is very valuable and active module of linux kernel. >>> I've tried to apply these two patches[3] [4] to my local 5.10 code, I >>> found my understanding of io_uring is not enough to resolve all conflicts. >>> >>> Since 5.10 is an important stable branch of linux, we would appreciate >>> your help in solving this problem. >> >> Yes, this really needs to get buttoned up for 5.10. I seem to recall >> there was a reproducer for this that was somewhat saner than the >> syzbot one (which doesn't do anything for me). Pavel, do you have one? > > No, it was the only repro and was triggering the problem > just fine back then I modified it a bit and I can now trigger it. -- Jens Axboe