Has A relationship where the owned can know about owner

I have two classes Device and DeviceMemory, Device has a field memory of type DeviceMemory so that when Device is destroyed the DeviceMemory gets freed.

class DeviceMemory {
    void func();
}

class Device {
    VkPhysicalDevice phys_dev;
    VkDevice logi_dev;

    DeviceMemory memory;
}

How can I make func be able to access phys_dev and logi_dev from the owning device ?