Meltdown Spectre

This is a community article written by Kelvin Chan, kernel researcher from the VXRL Community. Originally posted in Windows kernel and software security.

引言

現今操作系統(OS)設計一般分為應用層 (Ring 3) 與 內核層(Ring 0) ,應用層屬於普通應用程式級別,而內核層屬於OS的代碼,Intel CPU Spectre漏洞產生後,有大量的非技術性文章,但Google Project Zero的文章講得比較艱深,因此筆者在這做一個比較簡單的解釋與定義。