{"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\/news\/intel-i-amd-standartiziruyut-mehanizm-chktag-dlya-zashhity-ot-uyazvimostej-pri-rabote-s-pamyatyu","title":{"rendered":"Intel ja AMD standardiseerivad ChkTag mehhanismi m\u00e4luhaavatavuste kaitsmiseks.","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

Intel ja AMD arendavad koos laialdast ChkTag (x86 m\u00e4lu m\u00e4rgistamine) juhiste komplekti, mis standardiseeritakse \u00fchtse rakenduse jaoks erinevate tootjate x86 protsessorites. Oma v\u00f5imalustelt sarnaneb ChkTag ARM protsessorites juba pakutava MTE (MemTag) laiendusega ning v\u00f5imaldab samuti blokeerida haavatavuste kasutamise, mis tuleneb vabanenud m\u00e4luplokkide, puhvrikeerise v\u00f5i mittealgatatud m\u00e4lu juurde p\u00e4\u00e4semisega. <\/p>\n

ChkTag pakub uusi protsessorijuhiseid, mis v\u00f5imaldavad riistvaraliselt siduda m\u00e4rgid m\u00e4lupiirkondadega ja korraldada n\u00e4idikute korrektse kasutamise kontrolli. Teated on, et nende juhiste kasutamine kompilaatoritega v\u00f5imaldab tagada m\u00e4luga t\u00f6\u00f6tamise ohutuse ilma rakenduste j\u00f5udluse v\u00e4henemiseta. Samuti j\u00e4\u00e4vad ChkTag'i kasutavad rakendused \u00fchilduvaks vanemate protsessoritega, millel ei ole ChkTag'i riistvaralist tuge, mis lihtsustab kaitse rakendamist. <\/p>\n

Rakendatud kaitsemeetod seisneb iga m\u00e4lubloki jaoks m\u00e4rgi loomises, mis toimib sarnaselt v\u00f5tmena sellele m\u00e4lule juurdep\u00e4\u00e4suks (n\u00e4iteks MTE rakendamisel luuakse iga 16 baiti kohta 4-bitine m\u00e4rk). M\u00e4rk genereeritakse rakenduse poolt eraldatud m\u00e4lu piirkonna jaoks spetsiaalsete CPU juhiste abil ning see salvestatakse n\u00e4idiku \u00fclemistesse kasutamata bittidesse ning ka reserveeritud ja rakendustele k\u00e4ttesaamatusse lineaarsesse\/virtuaalsesse m\u00e4llu. M\u00e4lu juurde p\u00e4\u00e4semisel m\u00e4rgistatud n\u00e4idikuga kontrollib protsessor, kas n\u00e4idikuga seotud m\u00e4rk vastab m\u00e4lublokke \u00fchendatud m\u00e4rkidele, ning lubab juurdep\u00e4\u00e4su ainult siis, kui m\u00e4rgid kattuvad. <\/p>\n

ChkTag tehnoloogia on v\u00e4lja t\u00f6\u00f6tatud Intel ja AMD koost\u00f6\u00f6s EAG (x86 Ecosystem Advisory Group) r\u00fchmas, mis loodi aasta tagasi x86 platvormide \u00fchilduvuse tagamiseks, Intel ja AMD toodete liideste standardiseerimiseks, x86 s\u00fcsteemide tarkvara arendamise lihtsustamiseks ja arendajate vajaduste tuvastamiseks arhitektuuri laiendamiseks. Lisaks Intelile ja AMD-le kuuluvad r\u00fchma liikmed Linus Torvalds, Linuxi kerneli looja, Tim Sweeney, Epic Games'i asutaja ja \u00fcks m\u00e4ngu mootori Unreal Engine v\u00f5tme 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 standardinud ning \u00fchtlustanud FRED (Flexible Return and Event Delivery) katkemismudeli, AVX10 vektorite k\u00e4su 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-news"],"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\u00e4luprobleemide haavatavuste kaitseks | ProHoster","description":"Intel ja AMD arendavad koos laiendatud ChkTag k\u00e4skude komplekti 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