{"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\/sv\/blog\/news\/v-fedora-45-namereny-vklyuchit-zashhitu-na-osnove-tenevogo-steka","title":{"rendered":"I Fedora 45 planerar man att inkludera skydd baserat p\u00e5 en skuggstack.","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

I Fedora Linux 45, som \u00e4r planerad till h\u00f6sten 2026, avser man att som standard aktivera anv\u00e4ndningen av en shadow stack p\u00e5 x86_64-system f\u00f6r att blockera exploitering som skriver \u00f6ver returadresser f\u00f6r funktioner vid buffer overflow. Skyddet avses att aktiveras f\u00f6r alla applikationer och bibliotek som \u00e4r byggda med hj\u00e4lp av kompilatorerna gcc (C, C++), clang (C, C++) och rustc (Rust). Planen \u00e4r \u00e4nnu inte godk\u00e4nd av kommitt\u00e9n FESCo (Fedora Engineering Steering Committee), som ansvarar f\u00f6r den tekniska delen av utvecklingen av Fedora Linux. Initiativtagaren till att inf\u00f6ra en shadow stack i Fedora \u00e4r Arjun Shankar fr\u00e5n Red Hat, som hanterar paketen med glibc i Fedora och RHEL.<\/p>\n

Skyddet implementeras med hj\u00e4lp av processorns h\u00e5rdvarufunktioner och inneb\u00e4r att efter \u00f6verl\u00e4mnandet av kontrollen, sparas returadresser av processorn inte bara i den vanliga stacken utan \u00e4ven i en separat \"skuggstack\" som inte kan \u00e4ndras direkt. Innan man l\u00e4mnar funktionen extraheras returadressen fr\u00e5n skuggstacken och j\u00e4mf\u00f6rs med returadressen fr\u00e5n huvudstacken. En mismatch i adresserna leder till att ett undantag genereras, vilket blockerar situationer d\u00e4r en exploatering lyckats skriva \u00f6ver en adress i huvudstacken. Mekanismen f\u00f6r skuggstacken st\u00f6ds fr\u00e5n och med den 11:e generationen av Intel-processorer (\"Tiger Lake\" och \"Rocket Lake\") och mikroarkitekturen Zen3 i AMD-processorer.
\n
K\u00e4lla: 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 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[…]<\/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\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\udd47I Fedora 45 avser man att inkludera skydd baserat p\u00e5 en shadow stack | ProHoster","description":"I Fedora Linux 45, som \u00e4r planerad till h\u00f6sten 2026, avser man att som standard aktivera anv\u00e4ndningen av en shadow stack p\u00e5 x86_64-system f\u00f6r att blockera exploitering som skriver \u00f6ver 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