{"id":182435,"date":"2026-07-02T10:53:32","date_gmt":"2026-07-02T08:53:32","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/v-fedora-45-namereny-vklyuchit-zashhitu-na-osnove-tenevogo-steka"},"modified":"2026-07-02T10:53:32","modified_gmt":"2026-07-02T08:53:32","slug":"v-fedora-45-namereny-vklyuchit-zashhitu-na-osnove-tenevogo-steka","status":"publish","type":"post","link":"https:\/\/prohoster.info\/et\/blog\/news\/v-fedora-45-namereny-vklyuchit-zashhitu-na-osnove-tenevogo-steka","title":{"rendered":"Fedoras 45 plaanitakse lisada kaitse varjatud virnast.","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

Fedora Linux 45, mis v\u00e4lja tuleb 2026. aasta s\u00fcgisel, plaanib seadmetes x86_64 vaikimisi aktiveerida varjastatud stendi (shadow stack) kasutuse, et takistada ekspluateerimistegevust, mis \u00fcle kirjutab funktsioonide tagastusaadresse, kui virna \u00fclet\u00e4itumine toimub. Kaitse aktiveeritakse k\u00f5igi rakenduste ja teekide jaoks, mis on koostatud gcc (C, C++), clang (C, C++) ja rustc (Rust) kompilaatoreid kasutades. Plaan ei ole veel kinnitatud Fedora arenduskomitee FESCo (Fedora Engineering Steering Committee) poolt, mis vastutab Fedora Linuxi tehnilise arenduse eest. Varjatud stendi lisamise algataja Fedora's on Arjun Shankar ettev\u00f5ttest Red Hat, kes hooldab Fedora ja RHEL-i glibc pakette.<\/p>\n

Kaitse toimub protsessori riistvaraliste v\u00f5imaluste kaudu ning seisneb selles, et p\u00e4rast juhtimise \u00fcleandmist s\u00e4ilitab protsessor tagastusadressid mitte ainult tavalises virnas, vaid ka eraldi \"varjatud\" virnas, mida ei saa otse muuta. Funktsioonist v\u00e4ljapoole minnes t\u00f5mmatakse tagastusadress varjatud virnast ja v\u00f5rreldakse p\u00f5hiviras olevaga. Aadresside lahknevus p\u00f5hjustab erandi genereerimise, mis blokeerib olukordi, kus r\u00fcnnak suudab p\u00f5hiviras oleva aadressi \u00fcle kirjutada. Varjatud virna mehhanismi toetatakse alates Intel'i 11. p\u00f5lvkonna protsessoritest (\"Tiger Lake\" ja \"Rocket Lake\") ning AMD Zen3 mikroarhitektuurist.
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Allikas: opennet.ru<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"

\u0412 \u0432\u044b\u043f\u0443\u0441\u043a\u0435 Fedora Linux 45, \u043d\u0430\u043c\u0435\u0447\u0435\u043d\u043d\u043e\u043c \u043d\u0430 \u043e\u0441\u0435\u043d\u044c 2026 \u0433\u043e\u0434\u0430, \u043d\u0430 \u0441\u0438\u0441\u0442\u0435\u043c\u0430\u0445 x86_64 \u043f\u043b\u0430\u043d\u0438\u0440\u0443\u044e\u0442 \u043f\u043e \u0443\u043c\u043e\u043b\u0447\u0430\u043d\u0438\u044e \u0432\u043a\u043b\u044e\u0447\u0438\u0442\u044c \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u043d\u0438\u0435 \u0442\u0435\u043d\u0435\u0432\u043e\u0433\u043e \u0441\u0442\u0435\u043a\u0430 (shadow stack) \u0434\u043b\u044f \u0431\u043b\u043e\u043a\u0438\u0440\u043e\u0432\u0430\u043d\u0438\u044f \u0440\u0430\u0431\u043e\u0442\u044b \u044d\u043a\u0441\u043f\u043b\u043e\u0438\u0442\u043e\u0432, \u043f\u0435\u0440\u0435\u0437\u0430\u043f\u0438\u0441\u044b\u0432\u0430\u044e\u0449\u0438\u0445 \u0430\u0434\u0440\u0435\u0441 \u0432\u043e\u0437\u0432\u0440\u0430\u0442\u0430 \u0444\u0443\u043d\u043a\u0446\u0438\u0439 \u0432 \u0441\u043b\u0443\u0447\u0430\u0435 \u043f\u0435\u0440\u0435\u043f\u043e\u043b\u043d\u0435\u043d\u0438\u044f \u0431\u0443\u0444\u0435\u0440\u0430 \u0432 \u0441\u0442\u0435\u043a\u0435. \u0417\u0430\u0449\u0438\u0442\u0443 \u043d\u0430\u043c\u0435\u0440\u0435\u043d\u044b \u0430\u043a\u0442\u0438\u0432\u0438\u0440\u043e\u0432\u0430\u0442\u044c \u0434\u043b\u044f \u0432\u0441\u0435\u0445 \u043f\u0440\u0438\u043b\u043e\u0436\u0435\u043d\u0438\u0439 \u0438 \u0431\u0438\u0431\u043b\u0438\u043e\u0442\u0435\u043a, \u0441\u043e\u0431\u0440\u0430\u043d\u043d\u044b\u0445 \u043f\u0440\u0438 \u043f\u043e\u043c\u043e\u0449\u0438 \u043a\u043e\u043c\u043f\u0438\u043b\u044f\u0442\u043e\u0440\u043e\u0432 gcc (C, C++), clang (C, C++) \u0438 […]<\/p>\n","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"author":8,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[702],"tags":[],"class_list":["post-182435","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\udd47Fedora 45-s plaanitakse rakendada varjatud virna p\u00f5hist kaitset | ProHoster","description":"Fedora Linux 45 v\u00e4ljaande, mis on planeeritud s\u00fcgiseks 2026, plaanib x86_64 s\u00fcsteemides vaikimisi sisse l\u00fclitada varjatud stack'i (shadow stack) kasutamise, et blokeerida eksploitide, mis kirjutavad aadresse \u00fcle, 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