Theo de Raadt pridal do k\u00f3du OpenBSD s\u00e9riu patchov pre dodato\u010dn\u00fa ochranu pam\u00e4te procesov v priestore pou\u017e\u00edvate\u013ea. V\u00fdvoj\u00e1rom bol navrhnut\u00fd nov\u00fd syst\u00e9mov\u00fd volanie a s n\u00edm s\u00favisiaca knihov\u00e1 funkcia mimmutable, ktor\u00e1 umo\u017e\u0148uje zafixova\u0165 pr\u00edstupov\u00e9 pr\u00e1va pri mapovan\u00ed do pam\u00e4te. Po zafixovan\u00ed s\u00fa pr\u00edstupov\u00e9 pr\u00e1va pre oblas\u0165 pam\u00e4te, napr\u00edklad z\u00e1kaz z\u00e1pisu a vykon\u00e1vania, nemo\u017en\u00e9 v bud\u00facnosti zmeni\u0165 prostredn\u00edctvom \u010fal\u0161\u00edch volan\u00ed funkci\u00ed mmap(), mprotect() a munmap(), ktor\u00e9 pri pokuse o zmenu vydaj\u00fa chybu EPERM. <\/p>\n
Na spr\u00e1vu mo\u017enosti meni\u0165 pr\u00e1va odrazenej pam\u00e4te pre objektov\u00e9 s\u00fabory bola navrhnut\u00e1 nov\u00e1 sekcia Mutable BSS (.openbsd.mutable, Mutable Block Starting Symbol) a boli pridan\u00e9 nov\u00e9 vlajky PF_MUTABLE a UVM_ET_IMMUTABLE. Do linkeru bola pridan\u00e1 podpora definovania sekci\u00ed «openbsd.mutable» a umiestnenia ich do samostatnej oblasti v BSS, vyrovnanej pod\u013ea hranice str\u00e1nky pam\u00e4te. Prostredn\u00edctvom volania funkcie mimmutable je mo\u017en\u00e9 ozna\u010di\u0165 v\u0161etky odrazen\u00e9 oblasti ako nezmenite\u013en\u00e9 (immutable), s v\u00fdnimkou sekci\u00ed ozna\u010den\u00fdch ako «openbsd.mutable». T\u00e1to nov\u00e1 mo\u017enos\u0165 bude spr\u00edstupnen\u00e1 pou\u017e\u00edvate\u013eom vo verzii OpenBSD 7.3. \u0422\u044d\u043e \u0434\u0435 \u0420\u0430\u0430\u0434\u0442 (Theo de Raadt) \u0434\u043e\u0431\u0430\u0432\u0438\u043b \u0432 \u043a\u043e\u0434\u043e\u0432\u0443\u044e \u0431\u0430\u0437\u0443 OpenBSD \u0441\u0435\u0440\u0438\u044e \u043f\u0430\u0442\u0447\u0435\u0439 \u0434\u043b\u044f \u0434\u043e\u043f\u043e\u043b\u043d\u0438\u0442\u0435\u043b\u044c\u043d\u043e\u0439 \u0437\u0430\u0449\u0438\u0442\u044b \u043f\u0430\u043c\u044f\u0442\u0438 \u043f\u0440\u043e\u0446\u0435\u0441\u0441\u043e\u0432 \u0432 \u043f\u0440\u043e\u0441\u0442\u0440\u0430\u043d\u0441\u0442\u0432\u0435 \u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u0442\u0435\u043b\u044f. \u0420\u0430\u0437\u0440\u0430\u0431\u043e\u0442\u0447\u0438\u043a\u0430\u043c \u043f\u0440\u0435\u0434\u043b\u043e\u0436\u0435\u043d \u043d\u043e\u0432\u044b\u0439 \u0441\u0438\u0441\u0442\u0435\u043c\u043d\u044b\u0439 \u0432\u044b\u0437\u043e\u0432 \u0438 \u0441\u0432\u044f\u0437\u0430\u043d\u043d\u0430\u044f \u0441 \u043d\u0438\u043c \u043e\u0434\u043d\u043e\u0438\u043c\u0451\u043d\u043d\u0430\u044f \u0431\u0438\u0431\u043b\u0438\u043e\u0442\u0435\u0447\u043d\u0430\u044f \u0444\u0443\u043d\u043a\u0446\u0438\u044f mimmutable, \u043f\u043e\u0437\u0432\u043e\u043b\u044f\u044e\u0449\u0430\u044f \u0437\u0430\u0444\u0438\u043a\u0441\u0438\u0440\u043e\u0432\u0430\u0442\u044c \u043f\u0440\u0430\u0432\u0430 \u0434\u043e\u0441\u0442\u0443\u043f\u0430 \u043f\u0440\u0438 \u043e\u0442\u0440\u0430\u0436\u0435\u043d\u0438\u0438 \u0432 \u043f\u0430\u043c\u044f\u0442\u044c (memory mappings). \u041f\u043e\u0441\u043b\u0435 \u0444\u0438\u043a\u0441\u0430\u0446\u0438\u0438, \u0432\u044b\u0441\u0442\u0430\u0432\u043b\u0435\u043d\u043d\u044b\u0435 \u0434\u043b\u044f \u043e\u0431\u043b\u0430\u0441\u0442\u0438 \u043f\u0430\u043c\u044f\u0442\u0438 \u043f\u0440\u0430\u0432\u0430, \u043d\u0430\u043f\u0440\u0438\u043c\u0435\u0440, \u0437\u0430\u043f\u0440\u0435\u0442 \u043d\u0430 \u0437\u0430\u043f\u0438\u0441\u044c […]<\/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-105272","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\udd47V OpenBSD boli prijat\u00e9 zmeny pre dodato\u010dn\u00fa ochranu pam\u00e4te procesov | ProHoster","description":"Theo de Raadt pridal do k\u00f3du OpenBSD s\u00e9riu patchov pre dodato\u010dn\u00fa ochranu pam\u00e4te procesov v priestore 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\u043f\u0440\u043e\u0446\u0435\u0441\u0441\u043e\u0432 | ProHoster","og:description":"\u0422\u044d\u043e \u0434\u0435 \u0420\u0430\u0430\u0434\u0442 (Theo de Raadt) \u0434\u043e\u0431\u0430\u0432\u0438\u043b \u0432 \u043a\u043e\u0434\u043e\u0432\u0443\u044e \u0431\u0430\u0437\u0443 OpenBSD \u0441\u0435\u0440\u0438\u044e \u043f\u0430\u0442\u0447\u0435\u0439 \u0434\u043b\u044f \u0434\u043e\u043f\u043e\u043b\u043d\u0438\u0442\u0435\u043b\u044c\u043d\u043e\u0439 \u0437\u0430\u0449\u0438\u0442\u044b \u043f\u0430\u043c\u044f\u0442\u0438 \u043f\u0440\u043e\u0446\u0435\u0441\u0441\u043e\u0432 \u0432 \u043f\u0440\u043e\u0441\u0442\u0440\u0430\u043d\u0441\u0442\u0432\u0435 \u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u0442\u0435\u043b\u044f.","og:url":"https:\/\/prohoster.info\/sk\/blog\/news\/v-openbsd-prinyaty-izmeneniya-dlya-dopolnitelnoj-zashhity-pamyati-proczessov","og:image":"https:\/\/prohoster.info\/wp-content\/uploads\/2021\/11\/logo-350.jpg","og:image:secure_url":"https:\/\/prohoster.info\/wp-content\/uploads\/2021\/11\/logo-350.jpg","og:image:width":350,"og:image:height":350,"article:published_time":"2022-10-09T07:37:09+00:00","article:modified_time":"2022-10-09T07:37:09+00:00","article:publisher":"https:\/\/www.facebook.com\/prohoster","article:author":"https:\/\/www.facebook.com\/prohoster"},"aioseo_meta_data":[],"gt_translate_keys":[{"key":"link","format":"url"}],"_links":{"self":[{"href":"https:\/\/prohoster.info\/sk\/wp-json\/wp\/v2\/posts\/105272","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/prohoster.info\/sk\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/prohoster.info\/sk\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/prohoster.info\/sk\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/prohoster.info\/sk\/wp-json\/wp\/v2\/comments?post=105272"}],"version-history":[{"count":0,"href":"https:\/\/prohoster.info\/sk\/wp-json\/wp\/v2\/posts\/105272\/revisions"}],"wp:attachment":[{"href":"https:\/\/prohoster.info\/sk\/wp-json\/wp\/v2\/media?parent=105272"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/prohoster.info\/sk\/wp-json\/wp\/v2\/categories?post=105272"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/prohoster.info\/sk\/wp-json\/wp\/v2\/tags?post=105272"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}
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Zdroj: opennet.ru<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"