{"id":249014,"date":"2022-08-06T09:00:43","date_gmt":"2022-08-06T01:00:43","guid":{"rendered":"https:\/\/lrxjmw.cn\/?p=249014"},"modified":"2022-07-30T22:26:23","modified_gmt":"2022-07-30T14:26:23","slug":"linux-retbleed-spectre","status":"publish","type":"post","link":"https:\/\/lrxjmw.cn\/linux-retbleed-spectre.html","title":{"rendered":"32\u4f4dLinux\u4e0d\u4f1a\u83b7\u5f97\u6f0f\u6d1e\u8865\u4e01"},"content":{"rendered":"
\u5bfc\u8bfb<\/td>\n | 32\u4f4dLinux\u53d1\u884c\u7248\u7684\u7528\u6237\u6709\u53e6\u4e00\u4e2a\u7406\u7531\u8003\u8651\u5347\u7ea7\uff0c\u56e0\u4e3a\u6709\u6d88\u606f\u79f0\u4ed6\u4eec\u7684\u5185\u6838\u4e0d\u4f1a\u9488\u5bf9\u6700\u65b0\u7684\u6295\u673a\u6267\u884c\u653b\u51fb\uff08\u88ab\u79f0\u4e3aRetbleed\uff09\u6253\u8865\u4e01\u3002\u6839\u636ePhoronix\u7684\u62a5\u9053\uff0c\u8fd9\u79cd\u88ab\u5f52\u7c7b\u4e3aCVE-2022-29900\u548cCVE-2022-29901\u7684\u653b\u51fb\u5df2\u7ecf\u5bfc\u81f4\u4e86\u4e00\u7cfb\u5217\u7684Linux\u8865\u4e01\u3002<\/strong><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n \u4f5c\u4e3aSpectre\u7684\u4e00\u4e2a\u53d8\u79cd\uff0cRetbleed\u5229\u7528\u4e86\u9488\u5bf9\u6b64\u7c7b\u653b\u51fb\u7684\u4e00\u4e2a\u7f13\u89e3\u63aa\u65bd\uff0c\u5e76\u5f71\u54cd\u5230\u7279\u5b9a\u7684x86-64\uff08AMD Zen 1\/1+\/2\u548cIntel Core 6-8 Gen\uff09\u3002\u5b83\u5df2\u7ecf\u5728\u4e00\u4e2a64\u4f4d\u7684Linux\u5185\u6838\u66f4\u65b0\u4e2d\u5f97\u5230\u89e3\u51b3\uff08Windows\u7528\u6237\u5e94\u8be5\u5df2\u7ecf\u6536\u5230\u7f13\u89e3\u63aa\u65bd\uff09\u3002\u4f46\u6240\u6d89\u53ca\u7684\u5de5\u4f5c\u91cf\u610f\u5473\u774032\u4f4dLinux\u5185\u6838\u4e0d\u4f1a\u5f97\u5230\u540c\u6837\u7684\u5904\u7406\u3002<\/p>\n <\/p>\n \u8be5\u653b\u51fb\u5229\u7528\u4e86retpolines\uff0c\u8fd9\u662f2018\u5e74\u63a8\u51fa\u7684\u9488\u5bf9Spectre\u7684\u7f13\u89e3\u63aa\u65bd\uff0c\u662f \"return \"\u548c \"trampoline \"\u7684\u6742\u7cc5\u8bcd\u3002\u6700\u521d\u7684\u653b\u51fb\u5229\u7528\u5904\u7406\u5668\u6295\u673a\u6267\u884c\u7cfb\u7edf\u4e2d\u7684\u95f4\u63a5\u5206\u652f\uff0c\u901a\u8fc7\u5206\u652f\u9519\u8bef\u9884\u6d4b\u6cc4\u9732\u6570\u636e\uff0c\u4ece\u7cfb\u7edf\u5185\u5b58\u4e2d\u7a83\u53d6\u4fe1\u606f\u3002\u4f46retpolines\u7528\u4e00\u4e2a\u8fd4\u56de\u6765\u53d6\u4ee3\u4e86\u8fd9\u4e9b\u5206\u652f\uff0c\u5b83\u4f7f\u7528\u4e00\u4e2a\u4ece\u672a\u6267\u884c\u8fc7\u7684\u65e0\u9650\u5faa\u73af\u6765\u9632\u6b62\u5904\u7406\u5668\u5bf9\u95f4\u63a5\u8df3\u8f6c\u7684\u76ee\u6807\u8fdb\u884c\u63a8\u6d4b\u3002<\/p>\n \u73b0\u5728\uff0c\u65b0\u7684\u6f0f\u6d1e\u53ef\u4ee5\u7ed5\u8fc7\u8fd9\u4e9bretpolines\uff0c\u5bfc\u81f4\u4efb\u610f\u7684\u4fe1\u606f\u4ece\u8ba1\u7b97\u673a\u7684\u5185\u5b58\u4e2d\u6cc4\u6f0f\u3002\u867d\u7136\u81f3\u5c11\u6709\u4e00\u4e2a\u4f7f\u7528Retbleed\u7684\u6982\u5ff5\u8bc1\u660e\u7684\u6f0f\u6d1e\u5df2\u7ecf\u88ab\u7f16\u7801\uff0c\u4f46\u4e0d\u77e5\u9053\u8fd9\u4e2a\u6f0f\u6d1e\u662f\u5426\u5728\u4e92\u8054\u7f51\u4e0a\u5927\u884c\u5176\u9053\u3002<\/p>\n \u82f1\u7279\u5c14\u7684Pawan Gupta\u5728\u56de\u7b54lore.kernel.org\u90ae\u4ef6\u5217\u8868\u7684\u8be2\u95ee\u65f6\u5199\u9053\uff1a\"\u82f1\u7279\u5c14\u4e0d\u77e5\u9053\u5728Skylake-gen CPU\u4e0a\u4f7f\u752832\u4f4d\u6a21\u5f0f\u7684\u751f\u4ea7\u73af\u5883\u3002\u6240\u4ee5\u8fd9\u4e0d\u5e94\u8be5\u662f\u4e00\u4e2a\u95ee\u9898\"\u3002<\/p>\n \u4ed6\u7684\u540c\u4e8bPeter Zijlstra\u8865\u5145\u8bf4\uff1a\"\u662f\u7684\uff0c\u5230\u76ee\u524d\u4e3a\u6b62\uff0c\u6ca1\u6709\u4eba\u5173\u5fc3\u4fee\u590d32\u4f4d\u3002\u5982\u679c\u6709\u4eba*\u771f\u7684\u5173\u5fc3\u5e76\u60f3\u6295\u5165\u7cbe\u529b\uff0c\u6211\u60f3\u6211\u4f1a\u5ba1\u67e5\u8fd9\u4e9b\u8865\u4e01\uff0c\u4f46\u8bf4\u771f\u7684\uff0c\u4f60\u4e0d\u5e94\u8be5\u5728\u57fa\u4e8eSkylake\/Zen\u7684\u7cfb\u7edf\u4e0a\u8fd0\u884c32\u4f4d\u5185\u6838\uff0c\u8fd9\u592a\u50bb\u4e86\u3002\"<\/p>\n \u56e0\u6b64\uff0c\u4fe1\u606f\u5f88\u6e05\u695a\uff1a\u5982\u679c\u4f60\u5728Skylake-vintage CPU\u4e0a\u8fd0\u884c32\u4f4dLinux\u53d1\u884c\u7248\uff0c\u8bf7\u7acb\u5373\u505c\u6b62\u8fd0\u884c\uff0c\u5e76\u5347\u7ea7\u523064\u4f4d\u3002<\/p>\n","protected":false},"excerpt":{"rendered":" \u4f5c\u4e3aSpectre\u7684\u4e00\u4e2a\u53d8\u79cd\uff0cRetbleed\u5229\u7528\u4e86\u9488\u5bf9\u6b64\u7c7b\u653b\u51fb\u7684\u4e00\u4e2a\u7f13\u89e3\u63aa\u65bd\uff0c\u5e76\u5f71\u54cd\u5230\u7279\u5b9a\u7684x86-64\uff08A […]<\/p>\n","protected":false},"author":362,"featured_media":216064,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[21],"tags":[],"class_list":["post-249014","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-news"],"acf":[],"_links":{"self":[{"href":"https:\/\/lrxjmw.cn\/wp-json\/wp\/v2\/posts\/249014","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/lrxjmw.cn\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/lrxjmw.cn\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/lrxjmw.cn\/wp-json\/wp\/v2\/users\/362"}],"replies":[{"embeddable":true,"href":"https:\/\/lrxjmw.cn\/wp-json\/wp\/v2\/comments?post=249014"}],"version-history":[{"count":4,"href":"https:\/\/lrxjmw.cn\/wp-json\/wp\/v2\/posts\/249014\/revisions"}],"predecessor-version":[{"id":249148,"href":"https:\/\/lrxjmw.cn\/wp-json\/wp\/v2\/posts\/249014\/revisions\/249148"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/lrxjmw.cn\/wp-json\/wp\/v2\/media\/216064"}],"wp:attachment":[{"href":"https:\/\/lrxjmw.cn\/wp-json\/wp\/v2\/media?parent=249014"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/lrxjmw.cn\/wp-json\/wp\/v2\/categories?post=249014"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/lrxjmw.cn\/wp-json\/wp\/v2\/tags?post=249014"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}} |