{"id":30014,"date":"2019-10-31T21:33:12","date_gmt":"2019-10-31T18:33:12","guid":{"rendered":"https:\/\/prohoster.info\/blog\/amd-podtverdila-chto-eyo-protsessory-ne-podverzheny-uyazvimosti-spoiler\/"},"modified":"2019-10-31T21:33:12","modified_gmt":"2019-10-31T18:33:12","slug":"amd-podtverdila-chto-eyo-protsessory-ne-podverzheny-uyazvimosti-spoiler","status":"publish","type":"post","link":"https:\/\/prohoster.info\/pt\/blog\/amd-podtverdila-chto-eyo-protsessory-ne-podverzheny-uyazvimosti-spoiler","title":{"rendered":"A AMD confirmou que seus processadores n\u00e3o est\u00e3o sujeitos \u00e0 vulnerabilidade Spoiler","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

No in\u00edcio deste m\u00eas, foi anunciada a descoberta de uma nova vulnerabilidade cr\u00edtica nos processadores Intel, chamada de \"Spoiler\". Os especialistas que identificaram o problema relataram que os processadores AMD e ARM n\u00e3o s\u00e3o afetados. Agora, a AMD confirmou que, devido \u00e0s caracter\u00edsticas arquitet\u00f4nicas, o Spoiler n\u00e3o representa uma amea\u00e7a para seus processadores.<\/p>\n

\"A<\/p>\n

Assim como nas vulnerabilidades Spectre e Meltdown, o novo problema reside na implementa\u00e7\u00e3o dos mecanismos de execu\u00e7\u00e3o especulativa de comandos nos processadores Intel. Nos chips da AMD, esse mecanismo \u00e9 implementado de forma diferente, uma vez que utiliza uma abordagem distinta para gerenciar opera\u00e7\u00f5es na mem\u00f3ria RAM e no cache. Para ser mais preciso, o Spoiler pode acessar informa\u00e7\u00f5es parciais sobre o endere\u00e7o (acima dos 11 bits do endere\u00e7o) durante opera\u00e7\u00f5es de carregamento. Os processadores AMD, por sua vez, n\u00e3o utilizam coincid\u00eancias parciais de endere\u00e7os acima dos 11 bits ao resolver conflitos de carregamento.<\/p>\n

\"A<\/p>\n

\u00c9 importante ressaltar que, embora o Spoiler, assim como o Spectre, se baseie no mecanismo de execu\u00e7\u00e3o especulativa de comandos, n\u00e3o ser\u00e1 poss\u00edvel fechar a nova vulnerabilidade com as \"corre\u00e7\u00f5es\" existentes para exploits anteriores. Ou seja, os processadores Intel atuais precisar\u00e3o de novos patches, que poder\u00e3o afetar novamente o desempenho dos chips. No futuro, a Intel, sem d\u00favida, precisar\u00e1 realizar corre\u00e7\u00f5es a n\u00edvel arquitet\u00f4nico. A AMD, por sua vez, n\u00e3o precisar\u00e1 tomar tais medidas.<\/p>\n

\"A<\/p>\n

Por fim, destacamos que o Spoiler afeta todos os processadores Intel, desde os chips Core da primeira gera\u00e7\u00e3o at\u00e9 os atuais Coffee Lake Refresh, al\u00e9m dos ainda n\u00e3o lan\u00e7ados Cascade Lake e Ice Lake. Apesar de a Intel ter sido informada sobre o problema no in\u00edcio de dezembro do ano passado e j\u00e1 terem se passado mais de dez dias desde a divulga\u00e7\u00e3o p\u00fablica do Spoiler, a empresa ainda n\u00e3o apresentou poss\u00edveis solu\u00e7\u00f5es para o problema e n\u00e3o emitiu declara\u00e7\u00e3o oficial a respeito.<\/p>\n

<\/p>\n

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Fonte: 3dnews.ru<\/a><\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"

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\u0432\u043e\u0441\u043f\u0440\u0438\u0438\u043c\u0447\u0438\u0432\u044b \u043a \u043d\u0435\u0439. \u0422\u0435\u043f\u0435\u0440\u044c \u0436\u0435 \u043a\u043e\u043c\u043f\u0430\u043d\u0438\u044f AMD \u043f\u043e\u0434\u0442\u0432\u0435\u0440\u0434\u0438\u043b\u0430, \u0447\u0442\u043e \u0431\u043b\u0430\u0433\u043e\u0434\u0430\u0440\u044f \u0430\u0440\u0445\u0438\u0442\u0435\u043a\u0442\u0443\u0440\u043d\u044b\u043c \u043e\u0441\u043e\u0431\u0435\u043d\u043d\u043e\u0441\u0442\u044f\u043c Spoiler \u043d\u0435 \u043f\u0440\u0435\u0434\u0441\u0442\u0430\u0432\u043b\u044f\u0435\u0442 \u0443\u0433\u0440\u043e\u0437\u044b \u0434\u043b\u044f \u0435\u0451 \u043f\u0440\u043e\u0446\u0435\u0441\u0441\u043e\u0440\u043e\u0432. \u041a\u0430\u043a \u0438 \u0432 \u0441\u043b\u0443\u0447\u0430\u0435 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0435\u0439 Spectre \u0438 Meltdown, […]<\/p>\n","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[],"tags":[],"class_list":["post-30014","post","type-post","status-publish","format-standard","hentry"],"aioseo_notices":[],"aioseo_head":"\n\t\t\n\t\n\t\n\t\n\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\n","aioseo_head_json":{"title":"\ud83e\udd47A AMD confirmou que seus processadores n\u00e3o est\u00e3o vulner\u00e1veis ao Spoiler | ProHoster","description":"No in\u00edcio deste m\u00eas, foi anunciada a descoberta de uma nova vulnerabilidade cr\u00edtica nos processadores Intel, chamada de 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