In the Mediatek Preloader, there are out of bounds reads and writes due to an exposed interface that allows arbitrary peripheral memory mapping with insufficient blacklisting/whitelisting. This could lead to local elevation of privilege, given physical access to the device with no additional execution privileges needed. User interaction is needed for exploitation.

References

• https://nvd.nist.gov/vuln/detail/CVE-2018-9371
• https://source.android.com/security/bulletin/2018-06-01