{"id":119848,"date":"2024-09-17T21:43:00","date_gmt":"2024-09-17T19:43:00","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/inzhener-iz-amd-predlozhil-uprostit-v-yadre-linux-upravlenie-blokirovkami-uyazvimostej-cpu"},"modified":"2024-09-17T21:43:00","modified_gmt":"2024-09-17T19:43:00","slug":"inzhener-iz-amd-predlozhil-uprostit-v-yadre-linux-upravlenie-blokirovkami-uyazvimostej-cpu","status":"publish","type":"post","link":"https:\/\/prohoster.info\/it\/blog\/novosti-interneta\/inzhener-iz-amd-predlozhil-uprostit-v-yadre-linux-upravlenie-blokirovkami-uyazvimostej-cpu","title":{"rendered":"Un ingegnere di AMD ha proposto di semplificare la gestione dei blocchi delle vulnerabilit\u00e0 della CPU nel kernel di Linux.","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

Poich\u00e9 il numero di modalit\u00e0 supportate nel kernel Linux per contrastare le vulnerabilit\u00e0 della CPU \u00e8 arrivato a 15 e l'elenco di tutte le vulnerabilit\u00e0 nella riga di comando del kernel \u00e8 diventato piuttosto complicato, uno sviluppatore del kernel della AMD ha proposto di passare dalla configurazione di blocco di specifiche vulnerabilit\u00e0 alla selezione del blocco dei vettori di attacco. <\/p>\n

I metodi di blocco dovrebbero essere attivati a seconda del tipo di violazione dell'isolamento: tra utente e kernel (mitigate_user_kernel), tra utente e altro utente (mitigate_user_user), tra sistema guest e ambiente host (mitigate_guest_host), tra diversi sistemi guest (mitigate_guest_guest) e tra diversi thread (mitigate_cross_thread). <\/p>\n

L'approccio proposto consentir\u00e0 di attivare solo la protezione per le classi di vulnerabilit\u00e0 che preoccupano realmente l'utente. Ad esempio, i proprietari di ambienti cloud possono abilitare le modalit\u00e0 mitigate_guest_host e mitigate_guest_guest, a seguito delle quali verranno attivati i metodi di protezione da vulnerabilit\u00e0 come BHI, GD, L1TF, MDS, MMIO, Retbleed, RFDS, Spectre_v2, SRBDS, SRSO e TAA. =============== ============== ============ ============= ============== ============ Vulnerabilit\u00e0 User-to-Kernel User-to-User Guest-to-Host Guest-to-Guest Cross-Thread =============== ============== ============ ============= ============== ============ BHI X X GDS X X X X L1TF X X MDS X X X X X MMIO X X X X X Meltdown X Retbleed X X X RFDS X X X X Spectre_v1 X Spectre_v2 X X Spectre_v2_user X X SRBDS X X X X SRSO X X SSB TAA X X X X X
\n
Fonte: opennet.ru<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"

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I metodi di blocco dovrebbero essere attivati a seconda del tipo di violazione dell'isolamento: tra utente","canonical_url":"https:\/\/prohoster.info\/it\/blog\/novosti-interneta\/inzhener-iz-amd-predlozhil-uprostit-v-yadre-linux-upravlenie-blokirovkami-uyazvimostej-cpu","robots":"max-image-preview:large","keywords":"","webmasterTools":{"miscellaneous":""},"schema":null,"og:locale":"it_IT","og:site_name":"ProHoster | \u041a\u0443\u043f\u0438\u0442\u044c \u043d\u0430\u0434\u0435\u0436\u043d\u044b\u0439 \u0445\u043e\u0441\u0442\u0438\u043d\u0433 \u0434\u043b\u044f \u0441\u0430\u0439\u0442\u043e\u0432 \u0441 \u0437\u0430\u0449\u0438\u0442\u043e\u0439 \u043e\u0442 DDoS, VPS VDS \u0441\u0435\u0440\u0432\u0435\u0440\u044b","og:type":"article","og:title":"\ud83e\udd47\u0418\u043d\u0436\u0435\u043d\u0435\u0440 \u0438\u0437 AMD \u043f\u0440\u0435\u0434\u043b\u043e\u0436\u0438\u043b \u0443\u043f\u0440\u043e\u0441\u0442\u0438\u0442\u044c \u0432 \u044f\u0434\u0440\u0435 Linux 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