2017å¹´ãã¤ã³ãã«ãARMã®CPUã«æ å ±çªåã®èå¼±æ§ãåå¨ãããã¨ãæããã«ãªã£ããé常ãCPUã®ããã»ã¹ã¯ã»ãã®ããã»ã¹ã®å¦çãã¦ãããã¼ã¿ãèªã¿åããã¨ã¯ã§ããªãä»çµã¿ã«ãªã£ã¦ããããããæ©è½ãæªç¨ãããã¨ã§å®è¡ä¸ã®ããã»ã¹ããæ¬æ¥ã¯å ¥æã§ãã¦ã¯ãããªããã¼ã¿ãçªåã§ãããã¨ãæããã«ãªã£ãããã®ä»çµã¿ãæªç¨ãã¦è¤æ°ã®æ»æææ³ãéçºããããããSpectre-v2 (ã¾ãã¯BTI: Branch Target Injectio)ãã¨å¼ã°ããææ³ãæãå±éºãªæ»ææ¹æ³ã¨èªèããã¦ããã ãããèå¼±æ§ã«å¯¾ãã¦ããªãã¬ã¼ãã£ã³ã°ã·ã¹ãã å´ã対çãå°å ¥ããã»ããCPUã¡ã¼ã«ã¼ããã¼ãã¦ã§ã¢ç·©åçï¼eIBRSãCSV2ãªã©ï¼ãå°å ¥ããããã®ç·©åçã¯æå³ããéãã«æ©è½ããããã©ãããç 究è ã¯ãã®æ»æææ³ã復活ããããã¨ã«æåããããã ã ç 究è ãã¯ãBranch History Injection
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