In preloader, 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. Patch ID: ALPS07734004 / ALPS07874358 (For MT6880, MT6890, MT6980, MT6990 only); Issue ID: ALPS07734004 / ALPS07874358 (For MT6880, MT6890, MT6980, MT6990 only).
https://corp.mediatek.com/product-security-bulletin/June-2023