{"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\/hu\/blog\/news\/intel-i-amd-standartiziruyut-mehanizm-chktag-dlya-zashhity-ot-uyazvimostej-pri-rabote-s-pamyatyu","title":{"rendered":"Az Intel \u00e9s az AMD standardiz\u00e1lja a ChkTag mechanizmust a mem\u00f3ri\u00e1val kapcsolatos sebezhet\u0151s\u00e9gek elleni v\u00e9delem \u00e9rdek\u00e9ben","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

Az Intel \u00e9s az AMD k\u00f6z\u00f6sen fejleszti a ChkTag (x86 Memory Tagging) kiterjesztett utas\u00edt\u00e1sk\u00e9szlet\u00e9t, amelyet standardiz\u00e1lnak az x86 processzorok egys\u00e9ges megval\u00f3s\u00edt\u00e1s\u00e1hoz k\u00fcl\u00f6nb\u00f6z\u0151 gy\u00e1rt\u00f3k sz\u00e1m\u00e1ra. A ChkTag k\u00e9pess\u00e9gei hasonl\u00edtanak az ARM processzorokban m\u00e1r el\u00e9rhet\u0151 MTE (MemTag) kiterjeszt\u00e9shez, \u00e9s lehet\u0151v\u00e9 teszik a m\u00e1r felszabad\u00edtott mem\u00f3ria blokkok, a buffert\u00falt\u00f6lt\u00e9s vagy a mem\u00f3ria inicializ\u00e1l\u00e1sa el\u0151tti hozz\u00e1f\u00e9r\u00e9s miatti sebezhet\u0151s\u00e9gek kihaszn\u00e1l\u00e1s\u00e1nak blokkol\u00e1s\u00e1t. <\/p>\n

A ChkTag \u00faj processzor utas\u00edt\u00e1sokat k\u00edn\u00e1l, amelyek lehet\u0151v\u00e9 teszik a c\u00edmk\u00e9k hardveres szinten t\u00f6rt\u00e9n\u0151 hozz\u00e1rendel\u00e9s\u00e9t a mem\u00f3ri\u00e1n bel\u00fcli ter\u00fcletekhez, valamint a mutat\u00f3k helyes haszn\u00e1lat\u00e1nak ellen\u0151rz\u00e9s\u00e9t. Azt \u00e1ll\u00edtj\u00e1k, hogy ezeknek az utas\u00edt\u00e1soknak a ford\u00edt\u00f3k \u00e1ltali alkalmaz\u00e1sa biztons\u00e1gos mem\u00f3riahaszn\u00e1latot biztos\u00edt an\u00e9lk\u00fcl, hogy cs\u00f6kkenten\u00e9 az alkalmaz\u00e1sok teljes\u00edtm\u00e9ny\u00e9t. Ezen fel\u00fcl a ChkTag-ot haszn\u00e1l\u00f3 alkalmaz\u00e1sok kompatibilisek maradnak a r\u00e9gi processzorokkal, amelyek nem rendelkeznek a ChkTag hardveres t\u00e1mogat\u00e1s\u00e1val, megk\u00f6nny\u00edtve ezzel a v\u00e9delem bevezet\u00e9s\u00e9t. <\/p>\n

A megval\u00f3s\u00edtott v\u00e9delmi m\u00f3dszer l\u00e9nyege, hogy minden mem\u00f3ria blokkhoz egy c\u00edmk\u00e9t rendel\u00fcnk, ami hasonl\u00f3 a hozz\u00e1f\u00e9r\u00e9si kulcshoz e mem\u00f3ria el\u00e9r\u00e9s\u00e9hez (p\u00e9ld\u00e1ul az MTE megval\u00f3s\u00edt\u00e1s\u00e1ban minden 16 b\u00e1jt ut\u00e1n egy 4 bites c\u00edmk\u00e9t hoznak l\u00e9tre). A c\u00edmk\u00e9t az alkalmaz\u00e1s gener\u00e1lja a memoria ter\u00fclet\u00e9nek elk\u00fcl\u00f6n\u00edt\u00e9sekor speci\u00e1lis CPU utas\u00edt\u00e1sok seg\u00edts\u00e9g\u00e9vel, majd elmenti a mutat\u00f3 fels\u0151, fel nem haszn\u00e1lt biteibe, valamint a line\u00e1ris\/virtu\u00e1lis mem\u00f3ria egy fenntartott \u00e9s az alkalmaz\u00e1sok sz\u00e1m\u00e1ra el\u00e9rhetetlen ter\u00fclet\u00e9re. Amikor a mem\u00f3ria c\u00edmk\u00e9zett mutat\u00f3val t\u00f6rt\u00e9nik el\u00e9r\u00e9se, a processzor ellen\u0151rzi a mutat\u00f3hoz rendelt c\u00edmke \u00e9s a mem\u00f3ria blokkokhoz rendelt c\u00edmk\u00e9k megfelel\u00e9s\u00e9t, \u00e9s csak akkor enged\u00e9lyezi a hozz\u00e1f\u00e9r\u00e9st, ha a c\u00edmk\u00e9k egyeznek. <\/p>\n

A ChkTag technol\u00f3gia az Intel \u00e9s az AMD k\u00f6z\u00f6tti egy\u00fcttm\u0171k\u00f6d\u00e9s keret\u00e9ben j\u00f6tt l\u00e9tre az EAG (x86 Ecosystem Advisory Group) csoportban, amely egy \u00e9vvel ezel\u0151tt alakult a x86 platformok k\u00f6z\u00f6tti kompatibilit\u00e1s biztos\u00edt\u00e1sa, az Intel \u00e9s AMD term\u00e9kek interf\u00e9szeinek standardiz\u00e1l\u00e1sa, a x86 rendszerek szoftverfejleszt\u00e9s\u00e9nek egyszer\u0171s\u00edt\u00e9se \u00e9s a fejleszt\u0151k architekt\u00far\u00e1val kapcsolatos ig\u00e9nyeinek felt\u00e1r\u00e1sa \u00e9rdek\u00e9ben. Az Intel \u00e9s AMD mellett a csoport tagjai k\u00f6z\u00f6tt megtal\u00e1lhat\u00f3 Linus Torvalds, a Linux kernel alkot\u00f3ja, Tim Sweeney, az Epic Games alap\u00edt\u00f3ja \u00e9s az Unreal Engine j\u00e1t\u00e9kfejleszt\u0151 motor egyik kulcsfontoss\u00e1g\u00fa fejleszt\u0151je, valamint a Broadcom, Dell, Google, Hewlett Packard, Lenovo, Meta, Microsoft, Oracle \u00e9s Red Hat c\u00e9gek k\u00e9pvisel\u0151i. <\/p>\n

A ChkTag mellett az Intel \u00e9s az AMD a FRED (Flexible Return and Event Delivery) megszak\u00edt\u00e1skezel\u00e9si modell, az AVX10 vektorinstrukci\u00f3k\u00e9szlet \u00e9s az ACE (Advanced Matrix Extensions) m\u00e1trixszorz\u00e1si kiterjeszt\u00e9sek megval\u00f3s\u00edt\u00e1sait is standardiz\u00e1lt\u00e1k \u00e9s egys\u00e9ges\u00edtett\u00e9k.
\n
Forr\u00e1s: 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\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\udd47Az Intel \u00e9s az AMD a ChkTag mechanizmust standardiz\u00e1lja a mem\u00f3ria m\u0171k\u00f6d\u00e9s\u00e9vel kapcsolatos sebezhet\u0151s\u00e9gek elleni v\u00e9delme 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\u0441\u0442\u0430\u043d\u0434\u0430\u0440\u0442\u0438\u0437\u0438\u0440\u0443\u044e\u0442 \u043c\u0435\u0445\u0430\u043d\u0438\u0437\u043c ChkTag \u0434\u043b\u044f \u0437\u0430\u0449\u0438\u0442\u044b \u043e\u0442 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0435\u0439 \u043f\u0440\u0438 \u0440\u0430\u0431\u043e\u0442\u0435 \u0441 \u043f\u0430\u043c\u044f\u0442\u044c\u044e | ProHoster","og:description":"\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 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