Re: [PATCH (resend)] Input: MT - limit max slots

Greg Kroah-Hartman
2024-07-29T13:05:16Z

On Mon, Jul 29, 2024 at 09:51:30PM +0900, Tetsuo Handa wrote:
> syzbot is reporting too large allocation at input_mt_init_slots(), for
> num_slots is supplied from userspace using ioctl(UI_DEV_CREATE).
>
> Since nobody knows possible max slots, this patch chose 1024.
>
> Reported-by: syzbot <syzbot+0122fa359a69694395d5@syzkaller.appspotmail.com>
> Closes: https://syzkaller.appspot.com/bug?extid=0122fa359a69694395d5
> Suggested-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
> Signed-off-by: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp>
> ---
> This patch was tested in linux-next between next-20240611 and next-20240729
> via my tree. Who can take this patch? If nobody can, I will send to Linus.

What is wrong with the normal input maintainer and tree? Why not send
it there?

thanks,

greg k-h