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Date:   Wed, 10 Feb 2021 22:39:25 +0100
From:   Petr Vorel <pvorel@suse.cz>
To:     Jens Axboe <axboe@kernel.dk>
Cc:     Pavel Begunkov <asml.silence@gmail.com>, io-uring@vger.kernel.org,
        Nicolai Stange <nstange@suse.de>,
        Martin Doucha <mdoucha@suse.cz>,
        Bjorn Andersson <bjorn.andersson@linaro.org>,
        ltp@lists.linux.it
Subject: Re: CVE-2020-29373 reproducer fails on v5.11
Message-ID: <YCRSjQal+HFnzHs6@pevik>
Reply-To: Petr Vorel <pvorel@suse.cz>
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Hi Jens, Pavel,

> On 2/10/21 12:32 PM, Pavel Begunkov wrote:
> > On 10/02/2021 19:08, Petr Vorel wrote:
> >> Hi all,

> >> I found that the reproducer for CVE-2020-29373 from Nicolai Stange (source attached),
> >> which was backported to LTP as io_uring02 by Martin Doucha [1] is failing since
> >> 10cad2c40dcb ("io_uring: don't take fs for recvmsg/sendmsg") from v5.11-rc1.

> > Thanks for letting us know, we need to revert it

> I'll queue up a revert. Would also be nice to turn that into
> a liburing regression test.
Thanks a lot for a quick feedback and fix!

Kind regards,
Petr