At the time of writing, XDA says that the exploits affect almost every single 64-bit MediaTek processor unless it’s been patched. To that end, several brands that use the brand’s chipsets – this includes Samsung, Vivo, Huawei, HONOR, and OPPO, to name a few – have already patched their devices.   (Source: XDA via Android Central)

A MediaTek Critical Security Bug Has Been Discovered And Exploited - 32