{"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\/pl\/blog\/news\/intel-i-amd-standartiziruyut-mehanizm-chktag-dlya-zashhity-ot-uyazvimostej-pri-rabote-s-pamyatyu","title":{"rendered":"Intel i AMD standaryzuj\u0105 mechanizm ChkTag w celu ochrony przed lukami bezpiecze\u0144stwa zwi\u0105zanymi z pami\u0119ci\u0105.","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

Firmy Intel i AMD wsp\u00f3lnie rozwijaj\u0105 rozszerzony zestaw instrukcji ChkTag (x86 Memory Tagging), kt\u00f3ry zostanie ustandaryzowany dla zunifikowanej implementacji w procesorach x86 r\u00f3\u017cnych producent\u00f3w. ChkTag przypomina pod wzgl\u0119dem mo\u017cliwo\u015bci rozszerzenie MTE (MemTag), ju\u017c dostarczane w procesorach ARM, i tak\u017ce pozwala na blokowanie wykorzystywania luk bezpiecze\u0144stwa, spowodowanych dost\u0119pem do ju\u017c zwolnionych blok\u00f3w pami\u0119ci, przepe\u0142nieniem bufora lub dost\u0119pem do pami\u0119ci przed jej inicjalizacj\u0105. <\/p>\n

ChkTag oferuje nowe instrukcje procesora, kt\u00f3re umo\u017cliwiaj\u0105 na poziomie sprz\u0119towym przypisanie tag\u00f3w do obszar\u00f3w w pami\u0119ci oraz zorganizowanie weryfikacji poprawno\u015bci u\u017cycia wska\u017anik\u00f3w. Zg\u0142oszono, \u017ce zastosowanie tych instrukcji przez kompilatory pozwoli zapewni\u0107 bezpieczn\u0105 prac\u0119 z pami\u0119ci\u0105 bez obni\u017cania wydajno\u015bci aplikacji. Przy tym aplikacje korzystaj\u0105ce z ChkTag pozostan\u0105 zgodne ze starszymi procesorami, kt\u00f3re nie maj\u0105 sprz\u0119towej obs\u0142ugi ChkTag, co upro\u015bci wdro\u017cenie zabezpiecze\u0144. <\/p>\n

Zrealizowana metoda zabezpieczenia polega na tworzeniu dla ka\u017cdego bloku pami\u0119ci tagu, kt\u00f3ry dzia\u0142a jak klucz dost\u0119pu do tej pami\u0119ci (na przyk\u0142ad w implementacji MTE dla ka\u017cdego 16 bajt\u00f3w tworzy si\u0119 4-bitowy tag). Tag jest generowany przez aplikacj\u0119 dla wydzielonego obszaru pami\u0119ci przy pomocy specjalnych instrukcji CPU, a nast\u0119pnie przechowywany w g\u00f3rnych nieu\u017cywanych bitach wska\u017anika oraz w zarezerwowanym i niedost\u0119pnym dla aplikacji obszarze pami\u0119ci liniowej\/wirtualnej. Podczas dost\u0119pu do pami\u0119ci przy u\u017cyciu tagowanego wska\u017anika procesor sprawdza zgodno\u015b\u0107 tagu przypisanego do wska\u017anika z tagami przypisanymi do blok\u00f3w pami\u0119ci i zezwala na dost\u0119p tylko w przypadku zgodno\u015bci tag\u00f3w. <\/p>\n

Technologia ChkTag zosta\u0142a opracowana w ramach wsp\u00f3\u0142pracy Intela i AMD w grupie EAG (x86 Ecosystem Advisory Group), utworzonej rok temu w celu wsp\u00f3\u0142pracy nad zapewnieniem zgodno\u015bci mi\u0119dzy platformami x86, standaryzacji interfejs\u00f3w produkt\u00f3w Intela i AMD, uproszczenia rozwoju oprogramowania dla system\u00f3w x86 oraz zidentyfikowania potrzeb programist\u00f3w w zakresie rozszerzenia architektury. Opr\u00f3cz Intela i AMD w sk\u0142ad grupy wchodz\u0105 Linus Torvalds, tw\u00f3rca j\u0105dra Linux, Tim Sweeney, za\u0142o\u017cyciel Epic Games i jeden z kluczowych deweloper\u00f3w silnika gier Unreal Engine, a tak\u017ce przedstawiciele firm Broadcom, Dell, Google, Hewlett Packard, Lenovo, Meta, Microsoft, Oracle i Red Hat. <\/p>\n

Opr\u00f3cz ChkTag firmy Intel i AMD r\u00f3wnie\u017c standaryzowa\u0142y oraz zunifikowa\u0142y realizacje modelu przetwarzania przerwa\u0144 FRED (Flexible Return and Event Delivery), zbioru wektorowych instrukcji AVX10 oraz rozszerze\u0144 do mno\u017cenia macierzy ACE (Advanced Matrix Extensions).
\n
\u0179r\u00f3d\u0142o: 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 i AMD standaryzuj\u0105 mechanizm ChkTag w celu ochrony przed podatno\u015bciami podczas pracy z pami\u0119ci\u0105 | ProHoster","description":"Firmy Intel i AMD wsp\u00f3lnie rozwijaj\u0105 rozszerzony zestaw instrukcji ChkTag (x86 Memory Tagging), kt\u00f3ry zostanie sparametryzowany dla zunifikowanej realizacji w procesorach x86 r\u00f3\u017cnych producent\u00f3w.","canonical_url":"https:\/\/prohoster.info\/pl\/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":"pl_PL","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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