Microsoft Windows - 'win32k.sys' TTF Processing win32k!sbit_Embolden / win32k!ttfdCloseFontContext Use-After-Free (MS16-120)

Source: https://bugs.chromium.org/p/project-zero/issues/detail?id=868 We have encountered Windows kernel crashes in the win32k!sbitEmbolden and win32k!ttfdCloseFontContext functions while processing corrupted TTF font files. Excerpts of them are shown below: --- KERNELMODEEXCEPTIONNOTHANDLED 8e...