Huawei smartphones HUAWEI Y9 2019 and Honor View 20 have a denial of service vulnerability. Due to insufficient input validation of specific value when parsing the messages, an attacker may send specially crafted TD-SCDMA messages from a rogue base station to the affected devices to exploit this vulnerability. Successful exploit may cause an infinite loop and the device to reboot.
https://www.huawei.com/en/psirt/security-advisories/huawei-sa-20190911-01-mobile-en