Warsaw Huawei Smart phones with software of versions earlier than Warsaw-AL00C00B180, versions earlier than Warsaw-TL10C01B180 have a permission control vulnerability. Due to improper authorization on specific processes, an attacker with the root privilege of a mobile Android system can exploit this vulnerability to obtain some information of the user.
http://www.securityfocus.com/bid/102190
http://www.huawei.com/en/psirt/security-advisories/2017/huawei-sa-20170614-01-smartphone-en