{"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\/ro\/blog\/news\/intel-i-amd-standartiziruyut-mehanizm-chktag-dlya-zashhity-ot-uyazvimostej-pri-rabote-s-pamyatyu","title":{"rendered":"Intel \u0219i AMD standardizeaz\u0103 mecanismul ChkTag pentru protec\u021bia \u00eempotriva vulnerabilit\u0103\u021bilor la manipularea memoriei","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

Companiile Intel \u0219i AMD dezvolt\u0103 \u00een comun un set extins de instruc\u021biuni ChkTag (x86 Memory Tagging), care va fi standardizat pentru o implementare unificat\u0103 \u00een procesoarele x86 de la diferi\u021bi produc\u0103tori. Din punct de vedere al capabilit\u0103\u021bilor, ChkTag este similar cu extensia MTE (MemTag), care este deja implementat\u0103 \u00een procesoarele ARM, \u0219i ofer\u0103, de asemenea, posibilitatea de a bloca exploatarea vulnerabilit\u0103\u021bilor cauzate de accesarea blocurilor de memorie deja eliberate, dep\u0103\u0219irea buffer-ului sau accesarea memoriei \u00eenainte de ini\u021bializare. <\/p>\n

ChkTag ofer\u0103 noi instruc\u021biuni de procesor care permit la nivel hardware legarea etichetelor de zone din memorie \u0219i organizarea verific\u0103rii corectitudinii utiliz\u0103rii pointerilor. Se afirm\u0103 c\u0103 aplicarea acestor instruc\u021biuni de c\u0103tre compilatoare va permite o gestionare sigur\u0103 a memoriei f\u0103r\u0103 a reduce performan\u021ba aplica\u021biilor. \u00cen plus, aplica\u021biile care utilizeaz\u0103 ChkTag vor r\u0103m\u00e2ne compatibile cu procesoarele mai vechi, care nu dispun de suport hardware pentru ChkTag, facilit\u00e2nd astfel implementarea protec\u021biei. <\/p>\n

Metoda de protec\u021bie implementat\u0103 se reduce la crearea unei etichete pentru fiecare bloc de memorie, care ac\u021bioneaz\u0103 ca un fel de cheie pentru accesarea acestei memorii (de exemplu, \u00een implementarea MTE, pentru fiecare 16 octe\u021bi se creeaz\u0103 o etichet\u0103 de 4 bi\u021bi). Eticheta este generat\u0103 de aplica\u021bie pentru zona de memorie alocat\u0103 cu ajutorul unor instruc\u021biuni speciale ale CPU, \u0219i apoi este salvat\u0103 \u00een bi\u021bii superioari neutiliza\u021bi ai pointerului, precum \u0219i \u00een zona rezervat\u0103 \u0219i inaccesibil\u0103 aplica\u021biilor din memoria liniar\u0103\/virtual\u0103. Atunci c\u00e2nd se acceseaz\u0103 memoria utiliz\u00e2nd un pointer etichetat, procesorul verific\u0103 conformitatea etichetei legate de pointer cu etichetele legate de blocurile de memorie \u0219i permite accesul doar dac\u0103 etichetele coincid. <\/p>\n

Tehnologia ChkTag a fost dezvoltat\u0103 \u00een cadrul unei colabor\u0103ri \u00eentre Intel \u0219i AMD \u00een grupul EAG (x86 Ecosystem Advisory Group), \u00eenfiin\u021bat acum un an pentru a colabora la asigurarea compatibilit\u0103\u021bii \u00eentre platformele x86, standardizarea interfe\u021belor produselor Intel \u0219i AMD, simplificarea dezvolt\u0103rii software-ului pentru sistemele x86 \u0219i identificarea nevoilor dezvoltatorilor pentru extinderea arhitecturii. Pe l\u00e2ng\u0103 Intel \u0219i AMD, membri ai grupului includ Linus Torvalds, creatorul nucleului Linux, Tim Sweeney, fondatorul Epic Games \u0219i unul dintre dezvoltatorii cheie ai motorului de jocuri Unreal Engine, precum \u0219i reprezentan\u021bi ai companiilor Broadcom, Dell, Google, Hewlett Packard, Lenovo, Meta, Microsoft, Oracle \u0219i Red Hat. <\/p>\n

Pe l\u00e2ng\u0103 ChkTag, Intel \u0219i AMD au standardizat \u0219i unificat implement\u0103rile modelului de procesare a \u00eentreruperilor FRED (Flexible Return and Event Delivery), setului de instruc\u021biuni vectoriale AVX10 \u0219i extensiilor pentru \u00eenmul\u021birea matricelor ACE (Advanced Matrix Extensions).
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Sursa: opennet.ro<\/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 \u0219i AMD standardizeaz\u0103 mecanismul ChkTag pentru protec\u021bia \u00eempotriva vulnerabilit\u0103\u021bilor \u00een manipularea memoriei | ProHoster","description":"Companiile Intel \u0219i AMD dezvolt\u0103 \u00eempreun\u0103 un set extins de instruc\u021biuni ChkTag (x86 Memory Tagging), care va fi standardizat pentru o implementare unificat\u0103 \u00een procesoarele x86 ale diferitelor produc\u0103tori.","canonical_url":"https:\/\/prohoster.info\/ro\/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":"ro_RO","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 \u0441\u0442\u0430\u043d\u0434\u0430\u0440\u0442\u0438\u0437\u0438\u0440\u0443\u044e\u0442 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