CVE-2024-26716 usb: core: Prevent null pointer dereference in update_port_device_state

In the Linux kernel, the following vulnerability has been resolved: usb: core: Prevent null pointer dereference in updateportdevicestate Currently, the function updateportdevicestate gets the usbhub from udev-parent by calling usbhubtostructhub. However, in case the actconfig or the maxchild is 0...