Broadcom: Heap overflow in "wl_run_escan" when handling WLC_GET_VALID_CHANNELS ioctl results(CVE-2017-0568)

Broadcom produces Wi-Fi HardMAC SoCs which are used to handle the PHY and MAC layer processing. These chips are present in both mobile devices and Wi-Fi routers, and are capable of handling many Wi-Fi related events without delegating to the host OS. On Android devices, the "bcmdhd" driver is use...