{"id":170538,"date":"2026-05-09T00:24:31","date_gmt":"2026-05-08T22:24:31","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/predlozhen-killswitch-dlya-ekstrennogo-otklyucheniya-uyazvimoj-funkczionalnosti-v-yadre-linux"},"modified":"2026-05-09T00:24:31","modified_gmt":"2026-05-08T22:24:31","slug":"predlozhen-killswitch-dlya-ekstrennogo-otklyucheniya-uyazvimoj-funkczionalnosti-v-yadre-linux","status":"publish","type":"post","link":"https:\/\/prohoster.info\/sk\/blog\/news\/predlozhen-killswitch-dlya-ekstrennogo-otklyucheniya-uyazvimoj-funkczionalnosti-v-yadre-linux","title":{"rendered":"Navrhnut\u00fd killswitch pre n\u00fadzov\u00e9 vypnutie zranite\u013enej funk\u010dnosti v jadre Linux","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

Sasha Levin z NVIDIA, ktor\u00fd sa zaober\u00e1 \u00fadr\u017ebou LTS-vetiev jadra Linux a je \u010dlenom poradn\u00e9ho v\u00fdboru Linux Foundation, pripravil s\u00fabor z\u00e1plat na implement\u00e1ciu mechanizmu killswitch pre jadro Linux. Navrhnut\u00e1 mo\u017enos\u0165 umo\u017e\u0148uje okam\u017eite zak\u00e1za\u0165 pr\u00edstup k ur\u010ditej funk\u010dnosti be\u017eiaceho jadra. Predpoklad\u00e1 sa, \u017ee killswitch bude u\u017eito\u010dn\u00fd na do\u010dasn\u00e9 zablokovanie zranite\u013enost\u00ed, k\u00fdm sa nain\u0161taluje aktualiz\u00e1cia jadra s opravou. <\/p>\n

Spr\u00e1va killswitch sa vykon\u00e1va prostredn\u00edctvom s\u00faboru «\/sys\/kernel\/security\/killswitch\/control», ktor\u00fd umo\u017e\u0148uje nastavi\u0165 zachyt\u00e1vanie pr\u00edstupov k funkci\u00e1m jadra pod\u013ea ich n\u00e1zvov. Napr\u00edklad, na zablokovanie zranite\u013enosti Copy Fail sta\u010d\u00ed zap\u00edsa\u0165 do ovl\u00e1dacieho s\u00faboru pr\u00edkaz «engage af_alg_sendmsg -1» na aktiv\u00e1ciu zachyt\u00e1vania volania funkcie af_alg_sendmsg a namiesto jej vykonania vr\u00e1ti\u0165 k\u00f3d chyby «-1». <\/p>\n

Ako n\u00e1zvy m\u00f4\u017eu by\u0165 pou\u017eit\u00e9 ak\u00e9ko\u013evek znaky podporovan\u00e9 subsyst\u00e9mom kprobes. Mnoho ned\u00e1vno objaven\u00fdch v\u00e1\u017enych zranite\u013enost\u00ed v jadre sa nach\u00e1dza v subsyst\u00e9moch, ktor\u00e9 pou\u017e\u00edvaj\u00fa relat\u00edvne mal\u00fd po\u010det pou\u017e\u00edvate\u013eov (napr\u00edklad AF_ALG, ksmbd, nf_tables, vsock, ax25). Pre v\u00e4\u010d\u0161inu pou\u017e\u00edvate\u013eov je nepr\u00edjemnos\u0165 z ukon\u010denia funk\u010dnosti jednotliv\u00fdch funkci\u00ed zanedbate\u013en\u00e1 v porovnan\u00ed s rizikom pou\u017e\u00edvania jadra so zn\u00e1mou neopravenou zranite\u013enos\u0165ou, k\u00fdm sa nenain\u0161taluje oprava. Mechanizmus killswitch je obzvl\u00e1\u0161\u0165 aktu\u00e1lny v kontexte s\u00fa\u010dasnej zranite\u013enosti Dirty Frag, exploit pre ktor\u00fa bol zverejnen\u00fd sk\u00f4r, ne\u017e bola probl\u00e9m vyrie\u0161en\u00fd v jadre.
\n
Zdroj: opennet.ru<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"

\u0421\u0430\u0448\u0430 \u041b\u0435\u0432\u0438\u043d (Sasha Levin) \u0438\u0437 \u043a\u043e\u043c\u043f\u0430\u043d\u0438\u0438 NVIDIA, \u0437\u0430\u043d\u0438\u043c\u0430\u044e\u0449\u0438\u0439\u0441\u044f \u0441\u043e\u043f\u0440\u043e\u0432\u043e\u0436\u0434\u0435\u043d\u0438\u0435\u043c LTS-\u0432\u0435\u0442\u043e\u043a \u044f\u0434\u0440\u0430 Linux \u0438 \u0432\u0445\u043e\u0434\u044f\u0449\u0438\u0439 \u0432 \u043a\u043e\u043d\u0441\u0443\u043b\u044c\u0442\u0430\u0442\u0438\u0432\u043d\u044b\u0439 \u0441\u043e\u0432\u0435\u0442 \u043e\u0440\u0433\u0430\u043d\u0438\u0437\u0430\u0446\u0438\u0438 Linux Foundation, \u043f\u043e\u0434\u0433\u043e\u0442\u043e\u0432\u0438\u043b \u043d\u0430\u0431\u043e\u0440 \u043f\u0430\u0442\u0447\u0435\u0439 \u0441 \u0440\u0435\u0430\u043b\u0438\u0437\u0430\u0446\u0438\u0435\u0439 \u043c\u0435\u0445\u0430\u043d\u0438\u0437\u043c\u0430 killswitch \u0434\u043b\u044f \u044f\u0434\u0440\u0430 Linux. \u041f\u0440\u0435\u0434\u043b\u043e\u0436\u0435\u043d\u043d\u0430\u044f \u0432\u043e\u0437\u043c\u043e\u0436\u043d\u043e\u0441\u0442\u044c \u043f\u043e\u0437\u0432\u043e\u043b\u044f\u0435\u0442 \u043c\u0433\u043d\u043e\u0432\u0435\u043d\u043d\u043e \u043e\u0442\u043a\u043b\u044e\u0447\u0438\u0442\u044c \u0434\u043e\u0441\u0442\u0443\u043f \u043a \u043e\u043f\u0440\u0435\u0434\u0435\u043b\u0451\u043d\u043d\u043e\u0439 \u0444\u0443\u043d\u043a\u0446\u0438\u043e\u043d\u0430\u043b\u044c\u043d\u043e\u0441\u0442\u0438 \u0440\u0430\u0431\u043e\u0442\u0430\u044e\u0449\u0435\u0433\u043e \u044f\u0434\u0440\u0430. \u041f\u0440\u0435\u0434\u043f\u043e\u043b\u0430\u0433\u0430\u0435\u0442\u0441\u044f, \u0447\u0442\u043e killswitch \u0431\u0443\u0434\u0435\u0442 \u043f\u043e\u043b\u0435\u0437\u0435\u043d \u0434\u043b\u044f \u0432\u0440\u0435\u043c\u0435\u043d\u043d\u043e\u0433\u043e \u0431\u043b\u043e\u043a\u0438\u0440\u043e\u0432\u0430\u043d\u0438\u044f \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0435\u0439 \u043d\u0430 \u0432\u0440\u0435\u043c\u044f \u0434\u043e \u0443\u0441\u0442\u0430\u043d\u043e\u0432\u043a\u0438 \u043e\u0431\u043d\u043e\u0432\u043b\u0435\u043d\u0438\u044f […]<\/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-170538","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\udd47Navrhnut\u00fd killswitch na n\u00fadzov\u00e9 vypnutie zranite\u013enej funk\u010dnosti v jadre Linux | ProHoster","description":"Sasha Levin z NVIDIA, ktor\u00fd sa zaober\u00e1 \u00fadr\u017ebou LTS-vetiev jadra Linux a je \u010dlenom poradn\u00e9ho v\u00fdboru Linux Foundation, pripravil s\u00fabor z\u00e1plat na implement\u00e1ciu mechanizmu.","canonical_url":"https:\/\/prohoster.info\/sk\/blog\/news\/predlozhen-killswitch-dlya-ekstrennogo-otklyucheniya-uyazvimoj-funkczionalnosti-v-yadre-linux","robots":"max-image-preview:large","keywords":"","webmasterTools":{"miscellaneous":""},"schema":null,"og:locale":"sk_SK","og:site_name":"ProHoster | \u041a\u0443\u043f\u0438\u0442\u044c \u043d\u0430\u0434\u0435\u0436\u043d\u044b\u0439 \u0445\u043e\u0441\u0442\u0438\u043d\u0433 \u0434\u043b\u044f \u0441\u0430\u0439\u0442\u043e\u0432 \u0441 \u0437\u0430\u0449\u0438\u0442\u043e\u0439 \u043e\u0442 DDoS, VPS VDS \u0441\u0435\u0440\u0432\u0435\u0440\u044b","og:type":"article","og:title":"\ud83e\udd47\u041f\u0440\u0435\u0434\u043b\u043e\u0436\u0435\u043d killswitch \u0434\u043b\u044f \u044d\u043a\u0441\u0442\u0440\u0435\u043d\u043d\u043e\u0433\u043e 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\u043c\u0435\u0445\u0430\u043d\u0438\u0437\u043c\u0430.","og:url":"https:\/\/prohoster.info\/sk\/blog\/news\/predlozhen-killswitch-dlya-ekstrennogo-otklyucheniya-uyazvimoj-funkczionalnosti-v-yadre-linux","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":"2026-05-08T22:24:31+00:00","article:modified_time":"2026-05-08T22:24:31+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\/170538","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\/8"}],"replies":[{"embeddable":true,"href":"https:\/\/prohoster.info\/sk\/wp-json\/wp\/v2\/comments?post=170538"}],"version-history":[{"count":0,"href":"https:\/\/prohoster.info\/sk\/wp-json\/wp\/v2\/posts\/170538\/revisions"}],"wp:attachment":[{"href":"https:\/\/prohoster.info\/sk\/wp-json\/wp\/v2\/media?parent=170538"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/prohoster.info\/sk\/wp-json\/wp\/v2\/categories?post=170538"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/prohoster.info\/sk\/wp-json\/wp\/v2\/tags?post=170538"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}