{"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\/et\/blog\/novosti-interneta\/intel-i-amd-standartiziruyut-mehanizm-chktag-dlya-zashhity-ot-uyazvimostej-pri-rabote-s-pamyatyu","title":{"rendered":"Intel ja AMD standardiseerivad ChkTag mehhanismi m\u00e4luahelate haavatavuste kaitsmiseks.","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

Intel ja AMD t\u00f6\u00f6tavad koos v\u00e4lja laia ChkTag (x86 Memory Tagging) k\u00e4su komplekti, mis standardiseeritakse \u00fchtse rakenduse jaoks erinevate tootjate x86 protsessorites. ChkTag'i v\u00f5imalused sarnanevad MTE (MemTag) laiendusega, mis on juba saadaval ARM protsessorites, ja see v\u00f5imaldab samuti blokeerida haavatavuste kasutamist, mis tuleneb juba vabastatud m\u00e4luplokkide, puhver\u00fclekande v\u00f5i m\u00e4lu juurde p\u00e4\u00e4semisega enne initsialiseerimist. <\/p>\n

ChkTag pakub uusi protsessori k\u00e4ske, mis v\u00f5imaldavad riistvara tasemel siduda sildid m\u00e4lualadega ja korraldada pointer'ite \u00f5igsuse kontrollimist. Teatatakse, et nende k\u00e4skude rakendamine kompilaatorites v\u00f5imaldab tagada m\u00e4lu turvalist kasutamist ilma rakenduste j\u00f5udluse langetamiseta. Samuti j\u00e4\u00e4vad ChkTag'i kasutavad rakendused \u00fchilduvaks vanade protsessoritega, mis ei toeta riistvaraliselt ChkTag'i, mis lihtsustab kaitse rakendamist. <\/p>\n

Teostatud kaitsemeetod seisneb sellel, et iga m\u00e4luploki jaoks luuakse silt, mis toimib sarnaselt v\u00f5tmena selle m\u00e4lu juurde p\u00e4\u00e4semiseks (n\u00e4iteks MTE rakendamisel genereeritakse iga 16 baiti kohta 4-bitine silt). Sildi genereerib rakendus m\u00e4\u00e4ratud m\u00e4lu piirkonna jaoks spetsiaalsete CPU k\u00e4sklustega ning see salvestatakse nii kasutamata \u00fclemiste bitide osadest viidatud aadressis kui ka eraldatud ja rakendustele k\u00e4ttesaamatuks j\u00e4\u00e4vas lineaarses\/virtuaalses m\u00e4lus. M\u00e4lu juurde p\u00e4\u00e4semisel sildiga viidatud aadress ise kontrollib protsessor, kas viitega seotud silt vastab m\u00e4lublokkide etikettidele ja lubab juurde p\u00e4\u00e4su ainult siis, kui etiketid \u00fchtivad. <\/p>\n

ChkTag tehnoloogia on v\u00e4lja t\u00f6\u00f6tatud koost\u00f6\u00f6s Inteli ja AMD vahel EAG (x86 Ecosystem Advisory Group) grupi raames, mis loodi aasta tagasi, et tagada x86 platvormide \u00fchilduvus, standardiseerida Inteli ja AMD tooteid, lihtsustada x86 s\u00fcsteemide tarkvara arendust ning selgitada v\u00e4lja arendajate vajadused arhitektuuri laiendamiseks. Lisaks Inteli ja AMD-le kuuluvad grupi liikmetesse ka Linus Torvalds, Linuxi tuuma looja, Tim Sweeney, Epic Games'i asutaja ja \u00fcks m\u00e4ngumootori Unreal Engine'i peamistest arendajatest, samuti esindajad ettev\u00f5tetest Broadcom, Dell, Google, Hewlett Packard, Lenovo, Meta, Microsoft, Oracle ja Red Hat. <\/p>\n

Lisaks ChkTagile on Intel ja AMD standardiseerinud ja \u00fchtlustanud ka FRED (Flexible Return and Event Delivery) katkestuste t\u00f6\u00f6tlemise mudeli, AVX10 vektorinstruktsioonide komplekti ja ACE (Advanced Matrix Extensions) maatriksite korrutamise laiendused.
\n
Allikas: 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, \u043f\u0435\u0440\u0435\u043f\u043e\u043b\u043d\u0435\u043d\u0438\u0435\u043c \u0431\u0443\u0444\u0435\u0440\u0430 \u0438\u043b\u0438 \u043e\u0431\u0440\u0430\u0449\u0435\u043d\u0438\u0435\u043c \u043a \u043f\u0430\u043c\u044f\u0442\u0438 […]<\/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":[702],"tags":[],"class_list":["post-145975","post","type-post","status-publish","format-standard","hentry","category-novosti-interneta"],"aioseo_notices":[],"aioseo_head":"\n\t\t\n\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\n","aioseo_head_json":{"title":"\ud83e\udd47Intel ja AMD standardiseerivad ChkTag mehhanismi m\u00e4luhaavatavuste kaitsmiseks | ProHoster","description":"Intel ja AMD arendavad koos v\u00e4lja laiendatud ChkTag (x86 Memory Tagging) k\u00e4sutuste komplekti, mis standardiseeritakse \u00fchtse rakenduse jaoks erinevate tootjate x86-protsessorites. ChkTag v\u00f5imalused sarnanevad ARM-protsessorites juba saadaval olevale MTE (MemTag) laiendusele, pakkudes ka kaitset haavatavuste, mis on p\u00f5hjustatud vabastatud m\u00e4lublokkide, puhvrivigade v\u00f5i m\u00e4lu juurde p\u00e4\u00e4semise t\u00f5ttu, \u00e4ra kasutamise eest.","canonical_url":"https:\/\/prohoster.info\/et\/blog\/novosti-interneta\/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":"et_EE","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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\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 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