{"blog_url":"https://dot-h2o2.hatenadiary.org/","author_name":"dot_h2o2","html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Fdot-h2o2.hatenadiary.org%2Fentry%2F2022%2F08%2F06%2F114437\" title=\"\u30e1\u30e2\uff1aSpectre Variant 2\uff08CVE-2017-5715\uff09\u3068CPU\u5074\u306e\u5bfe\u7b56(IBRS/eIBRS)\u3068OS\u5074\u306e\u5bfe\u7b56 - .h2o\u306e\u304a\u6c17\u697d\u65e5\u8a18\" class=\"embed-card embed-blogcard\" scrolling=\"no\" frameborder=\"0\" style=\"display: block; width: 100%; height: 190px; max-width: 500px; margin: 10px 0px;\"></iframe>","provider_name":"Hatena Blog","width":"100%","url":"https://dot-h2o2.hatenadiary.org/entry/2022/08/06/114437","published":"2022-08-06 11:44:37","provider_url":"https://hatena.blog","categories":[],"title":"\u30e1\u30e2\uff1aSpectre Variant 2\uff08CVE-2017-5715\uff09\u3068CPU\u5074\u306e\u5bfe\u7b56(IBRS/eIBRS)\u3068OS\u5074\u306e\u5bfe\u7b56","type":"rich","author_url":"https://blog.hatena.ne.jp/dot_h2o2/","image_url":null,"blog_title":".h2o\u306e\u304a\u6c17\u697d\u65e5\u8a18","description":"\u968f\u5206\u524d\u306e\u8a71\u3060\u3051\u3069\u3001\u305f\u307e\u306b\u95a2\u4fc2\u6027\u3067\u6df7\u4e71\u3059\u308b\u306e\u3067\u30e1\u30e2\u3002Spectre Variant 2\u306e\u5bfe\u7b56\u3068\u3057\u3066\u3001\u9593\u63a5\u5206\u5c90\u306e\u6295\u6a5f\u5b9f\u884c\u5236\u9650 (IBRS)\u304cCPU\u5074\u306b\u5b9f\u88c5\u3055\u308c\u305f\u3002CPU\u5074\u306f\u3001\u3042\u304f\u307e\u3067\u5236\u9650\u3092\u304b\u3051\u308b\u624b\u6bb5\u3092\u6e96\u5099\u3057\u305f\u3060\u3051\u306a\u306e\u3067OS\u5074\u306e\u5bfe\u5fdc\u304c\u5fc5\u8981\u3002\u6700\u8fd1\u306eOS\u306fintel\u793e\u306eCPU microcode update\u3092\u5185\u5305\u3057\u3066\u3044\u308b\u30b1\u30fc\u30b9\u304c\u591a\u3044\u306e\u3067\u3001BIOS\u66f4\u65b0\u3092\u3057\u306a\u304f\u3066\u3082OS\u3092\u66f4\u65b0\u3059\u308c\u3070\u7de9\u548c\u5bfe\u7b56\u304c\u307b\u307c\u5b9f\u73fe\u3067\u304d\u308b\u3002 CPU(intel\u793e)\u306e\u5bfe\u7b56 IBRS: CPU microcode\u3067\u5b9f\u88c5,model-specific register (MSR)\u306bIA32_SPEC_CTRL.IBRS\u3092\u8a2d\u3051\u305f\u3002 eIBRS: \u2026","version":"1.0","height":"190"}