{"id":145975,"date":"2025-10-21T11:12:11","date_gmt":"2025-10-21T09:12:11","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/intel-i-amd-standartiziruyut-mehanizm-chktag-dlya-zashhity-ot-uyazvimostej-pri-rabote-s-pamyatyu"},"modified":"2025-10-21T11:12:11","modified_gmt":"2025-10-21T09:12:11","slug":"intel-i-amd-standartiziruyut-mehanizm-chktag-dlya-zashhity-ot-uyazvimostej-pri-rabote-s-pamyatyu","status":"publish","type":"post","link":"https:\/\/prohoster.info\/sk\/blog\/news\/intel-i-amd-standartiziruyut-mehanizm-chktag-dlya-zashhity-ot-uyazvimostej-pri-rabote-s-pamyatyu","title":{"rendered":"Intel a AMD \u0161tandardizuj\u00fa mechanizmus ChkTag na ochranu pred zranite\u013enos\u0165ami pri pr\u00e1ci s pam\u00e4\u0165ou.","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

Spolo\u010dnosti Intel a AMD spolo\u010dne vyv\u00edjaj\u00fa roz\u0161\u00edren\u00fa sadu in\u0161trukci\u00ed ChkTag (x86 Memory Tagging), ktor\u00e1 bude \u0161tandardizovan\u00e1 pre jednotn\u00fa implement\u00e1ciu v x86 procesoroch r\u00f4znych v\u00fdrobcov. Z h\u013eadiska svojich mo\u017enost\u00ed ChkTag pripom\u00edna roz\u0161\u00edrenie MTE (MemTag), ktor\u00e9 sa u\u017e dod\u00e1va v procesoroch ARM, a tie\u017e umo\u017e\u0148uje blokova\u0165 zneu\u017e\u00edvanie zranite\u013enost\u00ed sp\u00f4soben\u00fdch pr\u00edstupom k u\u017e uvo\u013enen\u00fdm blokom pam\u00e4te, prete\u010den\u00edm z\u00e1sobn\u00edka alebo pr\u00edstupom k pam\u00e4ti pred inicializ\u00e1ciou. <\/p>\n

ChkTag pon\u00faka nov\u00e9 procesorov\u00e9 in\u0161trukcie, ktor\u00e9 umo\u017e\u0148uj\u00fa na hardv\u00e9rovej \u00farovni priradi\u0165 zna\u010dky k oblastiam v pam\u00e4ti a organizova\u0165 kontrolu spr\u00e1vnosti pou\u017e\u00edvania ukazovate\u013eov. Tvrd\u00ed sa, \u017ee aplik\u00e1cia t\u00fdchto in\u0161trukci\u00ed kompil\u00e1tormi umo\u017en\u00ed bezpe\u010dn\u00fa pr\u00e1cu s pam\u00e4\u0165ou bez zn\u00ed\u017eenia v\u00fdkonu aplik\u00e1ci\u00ed. Pri tom aplik\u00e1cie vyu\u017e\u00edvaj\u00face ChkTag zostan\u00fa kompatibiln\u00e9 so star\u00fdmi procesormi, ktor\u00e9 nemaj\u00fa hardv\u00e9rov\u00fa podporu ChkTag, \u010do u\u013eah\u010d\u00ed zavedenie ochrany. <\/p>\n

Implementovan\u00e1 met\u00f3da ochrany spo\u010d\u00edva v vytvoren\u00ed zna\u010dky pre ka\u017ed\u00fd blok pam\u00e4te, ktor\u00e1 sl\u00fa\u017ei ako k\u013e\u00fa\u010d na pr\u00edstup k tejto pam\u00e4ti (napr\u00edklad v implement\u00e1cii MTE sa pre ka\u017ed\u00fdch 16 bajtov vytv\u00e1ra 4-bitov\u00e1 zna\u010dka). Zna\u010dka sa generuje aplik\u00e1ciou pre pridelen\u00fa oblas\u0165 pam\u00e4te pomocou \u0161peci\u00e1lnych in\u0161trukci\u00ed CPU a n\u00e1sledne sa ukl\u00e1d\u00e1 v horn\u00fdch nepou\u017e\u00edvan\u00fdch bitoch ukazovate\u013ea, ako aj v rezervovanej a pre aplik\u00e1cie nepr\u00edstupnej oblasti line\u00e1rnej\/virtu\u00e1lnej pam\u00e4te. Pri pr\u00edstupe k pam\u00e4ti pomocou tagovan\u00e9ho ukazovate\u013ea procesor kontroluje zhodu zna\u010dky priradenej k ukazovate\u013eu so zna\u010dkami priraden\u00fdmi k blokom pam\u00e4te a povo\u013euje pr\u00edstup iba v pr\u00edpade, ak sa zna\u010dky zhoduj\u00fa. <\/p>\n

Technol\u00f3gia ChkTag bola vyvinut\u00e1 v r\u00e1mci spolupr\u00e1ce spolo\u010dnost\u00ed Intel a AMD v skupine EAG (x86 Ecosystem Advisory Group), ktor\u00e1 bola zalo\u017een\u00e1 pred rokom za \u00fa\u010delom zlep\u0161enia kompatibility medzi platformami x86, \u0161tandardiz\u00e1cie rozhran\u00ed produktov Intel a AMD, zjednodu\u0161enia v\u00fdvoja softv\u00e9ru pre syst\u00e9my x86 a zistenia potrieb v\u00fdvoj\u00e1rov pri roz\u0161\u00edren\u00ed architekt\u00fary. Okrem spolo\u010dnost\u00ed Intel a AMD s\u00fa \u010dlenmi skupiny aj Linus Torvalds, zakladate\u013e Linuxov\u00e9ho jadra, Tim Sweeney, zakladate\u013e spolo\u010dnosti Epic Games a jeden z k\u013e\u00fa\u010dov\u00fdch v\u00fdvoj\u00e1rov hern\u00e9ho enginu Unreal Engine, ako aj z\u00e1stupcovia spolo\u010dnost\u00ed Broadcom, Dell, Google, Hewlett Packard, Lenovo, Meta, Microsoft, Oracle a Red Hat. <\/p>\n

Okrem ChkTag spolo\u010dnosti Intel a AMD tie\u017e \u0161tandardizovali a unifikovali implement\u00e1ciu modelu spracovania preru\u0161enia FRED (Flexible Return and Event Delivery), mno\u017einy vektorov\u00fdch in\u0161trukci\u00ed AVX10 a roz\u0161\u00edren\u00ed pre n\u00e1sobenie mat\u00edc ACE (Advanced Matrix Extensions).
\n
Zdroj: opennet.ru<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"

\u041a\u043e\u043c\u043f\u0430\u043d\u0438\u0438 Intel \u0438 AMD \u0441\u043e\u0432\u043c\u0435\u0441\u0442\u043d\u043e \u0440\u0430\u0437\u0432\u0438\u0432\u0430\u044e\u0442 \u0440\u0430\u0441\u0448\u0438\u0440\u0435\u043d\u043d\u044b\u0439 \u043d\u0430\u0431\u043e\u0440 \u0438\u043d\u0441\u0442\u0440\u0443\u043a\u0446\u0438\u0439 ChkTag (x86 Memory Tagging), \u043a\u043e\u0442\u043e\u0440\u044b\u0439 \u0431\u0443\u0434\u0435\u0442 \u0441\u0442\u0430\u043d\u0434\u0430\u0440\u0442\u0438\u0437\u0438\u0440\u043e\u0432\u0430\u043d \u0434\u043b\u044f \u0443\u043d\u0438\u0444\u0438\u0446\u0438\u0440\u043e\u0432\u0430\u043d\u043d\u043e\u0439 \u0440\u0435\u0430\u043b\u0438\u0437\u0430\u0446\u0438\u0438 \u0432 x86-\u043f\u0440\u043e\u0446\u0435\u0441\u0441\u043e\u0440\u0430\u0445 \u0440\u0430\u0437\u043b\u0438\u0447\u043d\u044b\u0445 \u043f\u0440\u043e\u0438\u0437\u0432\u043e\u0434\u0438\u0442\u0435\u043b\u0435\u0439. \u041f\u043e \u0441\u0432\u043e\u0438\u043c \u0432\u043e\u0437\u043c\u043e\u0436\u043d\u043e\u0441\u0442\u044f\u043c ChkTag \u043d\u0430\u043f\u043e\u043c\u0438\u043d\u0430\u0435\u0442 \u0440\u0430\u0441\u0448\u0438\u0440\u0435\u043d\u0438\u0435 MTE (MemTag), \u0443\u0436\u0435 \u043f\u043e\u0441\u0442\u0430\u0432\u043b\u044f\u0435\u043c\u043e\u0435 \u0432 \u043f\u0440\u043e\u0446\u0435\u0441\u0441\u043e\u0440\u0430\u0445 ARM, \u0438 \u0442\u0430\u043a\u0436\u0435 \u043f\u043e\u0437\u0432\u043e\u043b\u044f\u0435\u0442 \u0431\u043b\u043e\u043a\u0438\u0440\u043e\u0432\u0430\u0442\u044c \u044d\u043a\u0441\u043f\u043b\u0443\u0430\u0442\u0430\u0446\u0438\u044e \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0435\u0439, \u0432\u044b\u0437\u0432\u0430\u043d\u043d\u044b\u0445 \u043e\u0431\u0440\u0430\u0449\u0435\u043d\u0438\u0435\u043c \u043a \u0443\u0436\u0435 \u043e\u0441\u0432\u043e\u0431\u043e\u0436\u0434\u0451\u043d\u043d\u044b\u043c \u0431\u043b\u043e\u043a\u0430\u043c \u043f\u0430\u043c\u044f\u0442\u0438, 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AMD spolo\u010dne rozv\u00edjaj\u00fa roz\u0161\u00edren\u00fa mno\u017einu in\u0161trukci\u00ed ChkTag (x86 Memory Tagging), ktor\u00e1 bude \u0161tandardizovan\u00e1 pre unifikovan\u00fa implement\u00e1ciu v x86 procesoroch r\u00f4znych v\u00fdrobcov.","canonical_url":"https:\/\/prohoster.info\/sk\/blog\/news\/intel-i-amd-standartiziruyut-mehanizm-chktag-dlya-zashhity-ot-uyazvimostej-pri-rabote-s-pamyatyu","robots":"max-image-preview:large","keywords":"","webmasterTools":{"miscellaneous":""},"schema":null,"og:locale":"sk_SK","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\udd47Intel \u0438 AMD 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