Re: linux-stable-5.10-y CVE-2022-1508 of io_uring module

[Pavel Begunkov]

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

--
Pavel Begunkov