I am sorry. This email was sent out due to an incorrect operation.
Please ignore it. I am sorry for disturbing you.
Best regards,
Baolu
On 03/25/2016 10:58 AM, Lu Baolu wrote:
> From: Oliver Neukum <oneukum@xxxxxxxx>
>
> Attacks that trick drivers into passing a NULL pointer
> to usb_driver_claim_interface() using forged descriptors are
> known. This thwarts them by sanity checking.
>
> Signed-off-by: Oliver Neukum <ONeukum@xxxxxxxx>
> CC: stable@xxxxxxxxxxxxxxx
> Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
> ---
> drivers/usb/core/driver.c | 6 +++++-
> 1 file changed, 5 insertions(+), 1 deletion(-)
>
> diff --git a/drivers/usb/core/driver.c b/drivers/usb/core/driver.c
> index 56593a9..2057d91 100644
> --- a/drivers/usb/core/driver.c
> +++ b/drivers/usb/core/driver.c
> @@ -502,11 +502,15 @@ static int usb_unbind_interface(struct device *dev)
> int usb_driver_claim_interface(struct usb_driver *driver,
> struct usb_interface *iface, void *priv)
> {
> - struct device *dev = &iface->dev;
> + struct device *dev;
> struct usb_device *udev;
> int retval = 0;
> int lpm_disable_error;
>
> + if (!iface)
> + return -ENODEV;
> +
> + dev = &iface->dev;
> if (dev->driver)
> return -EBUSY;
>
--
To unsubscribe from this list: send the line "unsubscribe stable" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html