On Tue, Jan 14, 2020 at 12:01:46PM +0100, Johan Hovold wrote:
> Make sure to stop any submitted write URBs on close(). This specifically
> avoids a NULL-pointer dereference or use-after-free in case of a late
> completion event after driver unbind.
>
> Fixes: 648d4e16567e ("USB: serial: opticon: add write support")
> Cc: stable <stable@xxxxxxxxxxxxxxx> # 2.6.30: xxx: USB: serial: opticon: add chars_in_buffer() implementation
> Signed-off-by: Johan Hovold <johan@xxxxxxxxxx>
Reviewed-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
