 static int uas_switch_interface(struct usb_device *udev,
 				struct usb_interface *intf)
 {
	struct usb_host_interface *alt;
 
 	alt = uas_find_uas_alt_setting(intf);
	if (!alt)
		return -ENODEV;
 
	return usb_set_interface(udev, alt->desc.bInterfaceNumber,
			alt->desc.bAlternateSetting);
 }

The product reads data past the end, or before the beginning, of the intended buffer.