Two Hidden Instructions Discovered in Intel CPUs Enable Microcode Modification .
Security researchers Mark Ermolov, Dmitry Sklyarov, and Maxim Goryachy discovered two undocumented x86 instructions that can be used to modify the CPU microcode. The instructions can only be executed when the CPU runs in debug mode, which makes them not easily exploitable, though.
Read in full here:
This thread was posted by one of our members via one of our news source trackers.