{"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\/ro\/blog\/news\/v-fedora-45-namereny-vklyuchit-zashhitu-na-osnove-tenevogo-steka","title":{"rendered":"\u00cen Fedora 45 se inten\u021bioneaz\u0103 includerea protec\u021biei bazate pe stiva de umbr\u0103","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

\u00cen versiunea Fedora Linux 45, planificat\u0103 pentru toamna anului 2026, se preconizeaz\u0103 activarea implicit\u0103 a utiliz\u0103rii stivei ascunse (shadow stack) pe sistemele x86_64, pentru a bloca func\u021bionarea exploiturilor care rescriu adresa de returnare a func\u021biilor \u00een cazul unei dep\u0103\u0219iri a stivei. Protec\u021bia se inten\u021bioneaz\u0103 a fi activat\u0103 pentru toate aplica\u021biile \u0219i bibliotecile compilate cu ajutorul compilatoarelor gcc (C, C++), clang (C, C++) \u0219i rustc (Rust). Planul nu a fost \u00eenc\u0103 aprobat de comitetul FESCo (Fedora Engineering Steering Committee), responsabil pentru partea tehnic\u0103 a dezvolt\u0103rii Fedora Linux. Ini\u021biatorul includerii stivei ascunse \u00een Fedora este Arjun Shankar de la Red Hat, care \u00eentre\u021bine pachetele cu glibc \u00een Fedora \u0219i RHEL.<\/p>\n

Protec\u021bia se realizeaz\u0103 prin utilizarea capacit\u0103\u021bilor hardware ale procesoarelor \u0219i const\u0103 \u00een faptul c\u0103, dup\u0103 transferul de control al func\u021biei, adresele de revenire sunt p\u0103strate de procesor nu doar \u00een stiva obi\u0219nuit\u0103, ci \u0219i \u00eentr-o \u201estiv\u0103 umbrit\u0103\u201d separat\u0103, care nu poate fi modificat\u0103 direct. \u00cenainte de ie\u0219irea din func\u021bie, adresa de revenire este extras\u0103 din stiva umbrit\u0103 \u0219i comparat\u0103 cu adresa de revenire din stiva principal\u0103. Neconcordan\u021ba adreselor duce la generarea unei excep\u021bii, bloc\u00e2nd situa\u021biile \u00een care un exploit a reu\u0219it s\u0103 rescrie adresa din stiva principal\u0103. Mecanismul stivei umbrite este sus\u021binut \u00eencep\u00e2nd cu genera\u021bia a 11-a de procesoare Intel (\u201eTiger Lake\u201d \u0219i \u201eRocket Lake\u201d) \u0219i arhitectura Zen3 \u00een procesoarele AMD.
\n
Sursa: opennet.ro<\/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\udd47\u00cen Fedora 45 se inten\u021bioneaz\u0103 includerea protec\u021biei pe baza stivei ascunse | ProHoster","description":"\u00cen versiunea Fedora Linux 45, planificat\u0103 pentru toamna anului 2026, se preconizeaz\u0103 activarea implicit\u0103 a utiliz\u0103rii stivei ascunse (shadow stack) pe sistemele x86_64, pentru a bloca func\u021bionarea exploiturilor care rescriu 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