linux-kernel - Re: linux-stable-5.10-y CVE-2022-1508 of io

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Message-ID: <7d54523e-372b-759b-1ebb-e0dbc181f18d@kernel.dk>
Date:   Thu, 5 May 2022 20:16:51 -0600
From:   Jens Axboe <axboe@...nel.dk>
To:     Guo Xuenan <guoxuenan@...wei.com>, asml.silence@...il.com
Cc:     lee.jones@...aro.org, linux-kernel@...r.kernel.org,
        io-uring@...r.kernel.org, yi.zhang@...wei.com, houtao1@...wei.com
Subject: Re: linux-stable-5.10-y CVE-2022-1508 of io_uring module

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?

-- 
Jens Axboe