CVE-2018-9391

In update_gps_sv and output_vzw_debug of
vendor/mediatek/proprietary/hardware/connectivity/gps/gps_hal/src/gpshal_wor
ker.c, there is a possible out of bounds write due to a missing bounds
check. This could lead to local escalation of privilege with System
execution privileges needed. User interaction is not needed for
exploitation.