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

[Greg KH]

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.

thanks,

greg k-h