{"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\/hu\/blog\/news\/predlozhen-killswitch-dlya-ekstrennogo-otklyucheniya-uyazvimoj-funkczionalnosti-v-yadre-linux","title":{"rendered":"Javasolt egy killswitch az elavult funkci\u00f3k v\u00e9szhelyzeti lekapcsol\u00e1s\u00e1ra a Linux kernelben","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

Sasha Levin (Sasha Levin) a NVIDIA, aki az LTS-\u00e1gakat fel\u00fcgyeli a Linux kernelben \u00e9s a Linux Foundation tan\u00e1csad\u00f3 test\u00fclet\u00e9nek tagja, elk\u00e9sz\u00edtette a killswitch mechanizmus\u00e1nak megval\u00f3s\u00edt\u00e1s\u00e1t tartalmaz\u00f3 patch-eket a Linux kernelhez. A javasolt funkci\u00f3 lehet\u0151v\u00e9 teszi, hogy az akt\u00edv kernel egyes funkci\u00f3inak hozz\u00e1f\u00e9r\u00e9s\u00e9t azonnal letilts\u00e1k. A killswitch hasznos lehet a sebezhet\u0151s\u00e9gek ideiglenes blokkol\u00e1s\u00e1ra a kernel friss\u00edt\u00e9se el\u0151tt, amely jav\u00edtja a probl\u00e9m\u00e1t. <\/p>\n

A killswitch kezel\u00e9se a «\\\/sys\\\/kernel\\\/security\\\/killswitch\\\/control» f\u00e1jl seg\u00edts\u00e9g\u00e9vel t\u00f6rt\u00e9nik, amely lehet\u0151v\u00e9 teszi a kernel funkci\u00f3k n\u00e9v szerinti h\u00edv\u00e1sainak elfog\u00e1s\u00e1nak be\u00e1ll\u00edt\u00e1s\u00e1t. P\u00e9ld\u00e1ul a Copy Fail sebezhet\u0151s\u00e9g blokkol\u00e1s\u00e1hoz elegend\u0151 a vez\u00e9rl\u0151 f\u00e1jlba be\u00edrni a «engage af_alg_sendmsg -1» parancsot, hogy aktiv\u00e1ljuk az af_alg_sendmsg funkci\u00f3 h\u00edv\u00e1s\u00e1nak elfog\u00e1s\u00e1t, \u00e9s annak v\u00e9grehajt\u00e1sa helyett a «-1» hiba k\u00f3dot adjuk vissza. <\/p>\n

A nevekk\u00e9nt b\u00e1rmely karakter haszn\u00e1lhat\u00f3, amelyet a kprobes alrendszer t\u00e1mogat. Sz\u00e1mos recenten felfedezett, komoly sebezhet\u0151s\u00e9g a kernelben olyan alrendszerekben tal\u00e1lhat\u00f3, amelyeket viszonylag kev\u00e9s felhaszn\u00e1l\u00f3 haszn\u00e1l (p\u00e9ld\u00e1ul AF_ALG, ksmbd, nf_tables, vsock, ax25). A legt\u00f6bb felhaszn\u00e1l\u00f3 sz\u00e1m\u00e1ra az egyes funkci\u00f3k le\u00e1ll\u00edt\u00e1s\u00e1b\u00f3l ered\u0151 k\u00e9nyelmetlens\u00e9g nem hasonl\u00edthat\u00f3 a kernel olyan verzi\u00f3j\u00e1nak haszn\u00e1lat\u00e1val j\u00e1r\u00f3 kock\u00e1zathoz, amely ismert, de m\u00e9g nem jav\u00edtott sebezhet\u0151s\u00e9get tartalmaz, miel\u0151tt a jav\u00edt\u00e1st telep\u00edten\u00e9k. A killswitch mechanizmus k\u00fcl\u00f6n\u00f6sen relev\u00e1ns a mai Dirty Frag sebezhet\u0151s\u00e9g mint\u00e1j\u00e1ban, amelynek exploit-j\u00e1t a probl\u00e9ma megold\u00e1sa el\u0151tt hozt\u00e1k nyilv\u00e1noss\u00e1gra a kernelben.
\n
Forr\u00e1s: 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\udd47 Killswitch javasolt az \u00e9rz\u00e9keny funkci\u00f3k s\u00fcrg\u0151ss\u00e9gi le\u00e1ll\u00edt\u00e1s\u00e1hoz a Linux kernelben | ProHoster","description":"Sasha Levin (Sasha Levin) a NVIDIA-t\u00f3l, aki az LTS-\u00e1gakat fel\u00fcgyeli a Linux kernelben \u00e9s a Linux Foundation tan\u00e1csad\u00f3 test\u00fclet\u00e9nek tagja, elk\u00e9sz\u00edtette a mechanizmus megval\u00f3s\u00edt\u00e1s\u00e1t tartalmaz\u00f3 patch-eket.","canonical_url":"https:\/\/prohoster.info\/hu\/blog\/news\/predlozhen-killswitch-dlya-ekstrennogo-otklyucheniya-uyazvimoj-funkczionalnosti-v-yadre-linux","robots":"max-image-preview:large","keywords":"","webmasterTools":{"miscellaneous":""},"schema":null,"og:locale":"hu_HU","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 \u043e\u0442\u043a\u043b\u044e\u0447\u0435\u043d\u0438\u044f \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0439 \u0444\u0443\u043d\u043a\u0446\u0438\u043e\u043d\u0430\u043b\u044c\u043d\u043e\u0441\u0442\u0438 \u0432 \u044f\u0434\u0440\u0435 Linux | ProHoster","og:description":"\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, 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\u043c\u0435\u0445\u0430\u043d\u0438\u0437\u043c\u0430.","og:url":"https:\/\/prohoster.info\/hu\/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\/hu\/wp-json\/wp\/v2\/posts\/170538","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/prohoster.info\/hu\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/prohoster.info\/hu\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/prohoster.info\/hu\/wp-json\/wp\/v2\/users\/8"}],"replies":[{"embeddable":true,"href":"https:\/\/prohoster.info\/hu\/wp-json\/wp\/v2\/comments?post=170538"}],"version-history":[{"count":0,"href":"https:\/\/prohoster.info\/hu\/wp-json\/wp\/v2\/posts\/170538\/revisions"}],"wp:attachment":[{"href":"https:\/\/prohoster.info\/hu\/wp-json\/wp\/v2\/media?parent=170538"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/prohoster.info\/hu\/wp-json\/wp\/v2\/categories?post=170538"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/prohoster.info\/hu\/wp-json\/wp\/v2\/tags?post=170538"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}