On Thu, Mar 17, 2016 at 11:38:42AM +0100, Oliver Neukum wrote:
> An attack using the lack of sanity checking in probe
> is known. This patch checks for the existance of a
> second port.
> CVE-2016-3136
>
> Signed-off-by: Oliver Neukum <ONeukum@xxxxxxxx>
> CC: stable@xxxxxxxxxxxxxxx
> ---
> drivers/usb/serial/mct_u232.c | 4 ++++
> 1 file changed, 4 insertions(+)
>
> diff --git a/drivers/usb/serial/mct_u232.c b/drivers/usb/serial/mct_u232.c
> index fd707d6..d6a36b1 100644
> --- a/drivers/usb/serial/mct_u232.c
> +++ b/drivers/usb/serial/mct_u232.c
> @@ -378,6 +378,10 @@ static int mct_u232_port_probe(struct usb_serial_port *port)
> {
> struct mct_u232_private *priv;
>
> + /* check first to simplify error handling */
> + if (!port->serial->port[1])
> + return -ENODEV;
> +
This looks like you just resent v1 (again, please include the revision
in the mail Subject).
Thanks,
Johan
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