linux-kernel - Re: KASAN: use-after-free Read in io_iopoll

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Message-ID: <a1cb7271-def9-0387-96fc-93e55f85cd1c@kernel.dk>
Date:   Sun, 17 Jul 2022 16:58:48 -0600
From:   Jens Axboe <axboe@...nel.dk>
To:     mail.dipanjan.das@...il.com, viro@...iv.linux.org.uk,
        io-uring@...r.kernel.org, linux-fsdevel@...r.kernel.org,
        linux-kernel@...r.kernel.org
Cc:     syzkaller@...glegroups.com
Subject: Re: KASAN: use-after-free Read in io_iopoll_getevents

On 7/17/22 4:55 PM, Dipanjan Das wrote:
> Hi,
> 
> We would like to report the following bug which has been found by our
> modified version of syzkaller.
> 
> ======================================================
> description: KASAN: use-after-free Read in io_iopoll_getevents
> affected file: fs/io_uring.c
> kernel version: 5.7

Unless you can trigger this in a stable release, there's nothing we can do
about it as 5.7 has been dead for a long time. No more releases of that
branch will be happening.

-- 
Jens Axboe