The Bastet driver of Honor 9 Huawei smart phones with software of versions earlier than Stanford-AL10C00B175 has integer overflow vulnerability due to the lack of parameter validation. An attacker tricks a user into installing a malicious APP which has the root privilege; the APP can send a specific parameter to the driver of the smart phone, causing arbitrary code execution.
http://www.securityfocus.com/bid/101963
http://www.huawei.com/en/psirt/security-advisories/huawei-sa-20170914-02-smartphone-en