Re: [PATCH v2] vduse: prevent uninitialized memory accesses

[Maxime Coquelin]

On 8/29/22 09:48, Greg KH wrote:
> On Mon, Aug 29, 2022 at 09:34:24AM +0200, Maxime Coquelin wrote:
> > If the VDUSE application provides a smaller config space
> > than the driver expects, the driver may use uninitialized
> > memory from the stack.
> >
> > This patch prevents it by initializing the buffer passed by
> > the driver to store the config value.
> >
> > This fix addresses CVE-2022-2308.
> >
> > Cc: xieyongji@xxxxxxxxxxxxx
> > Cc: stable@xxxxxxxxxxxxxxx # v5.15+
> > Fixes: c8a6153b6c59 ("vduse: Introduce VDUSE - vDPA Device in Userspace")
> >
> > Acked-by: Jason Wang <jasowang@xxxxxxxxxx>
> > Signed-off-by: Maxime Coquelin <maxime.coquelin@xxxxxxxxxx>
>
> Please no blank line above the Acked-by: line here if possible.

Sure.

Jason, do you prefer I post a new revision with this single change or
you will handle it while applying? Either way is fine to me.

Thanks,
Maxime

> thanks,
>
> greg k-h