On Tue, Jan 12, 2016 at 03:10:50PM +0100, Vladis Dronov wrote:
> The visor driver crashes in clie_5_attach() when a specially crafted USB
> device without bulk-out endpoint is detected. This fix adds a check that
> the device has proper configuration expected by the driver.
> 
> Reported-by: Ralf Spenneberg <[email protected]>
> Signed-off-by: Vladis Dronov <[email protected]>
> ---
> Reference: https://bugzilla.redhat.com/show_bug.cgi?id=1296466
> 
>  drivers/usb/serial/visor.c | 6 ++++--
>  1 file changed, 4 insertions(+), 2 deletions(-)
> 
> diff --git a/drivers/usb/serial/visor.c b/drivers/usb/serial/visor.c
> index 60afb39..bbc90c0 100644
> --- a/drivers/usb/serial/visor.c
> +++ b/drivers/usb/serial/visor.c
> @@ -597,8 +597,10 @@ static int clie_5_attach(struct usb_serial *serial)
>        */
>  
>       /* some sanity check */
> -     if (serial->num_ports < 2)
> -             return -1;
> +     if (serial->num_bulk_out < 2) {
> +             dev_err(&serial->interface->dev, "missing bulk out 
> endpoints\n");
> +             return -ENODEV;
> +     }
>  
>       /* port 0 now uses the modified endpoint Address */
>       port = serial->port[0];

Now applied.

Thanks,
Johan
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