{"id":172753,"date":"2026-05-19T18:24:36","date_gmt":"2026-05-19T16:24:36","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/pintheft-shestaya-uyazvimost-klassa-copy-fail-predostavlyayushhaya-prava-root-v-linux"},"modified":"2026-05-19T18:24:36","modified_gmt":"2026-05-19T16:24:36","slug":"pintheft-shestaya-uyazvimost-klassa-copy-fail-predostavlyayushhaya-prava-root-v-linux","status":"publish","type":"post","link":"https:\/\/prohoster.info\/et\/blog\/news\/pintheft-shestaya-uyazvimost-klassa-copy-fail-predostavlyayushhaya-prava-root-v-linux","title":{"rendered":"PinTheft \u2014 kuues Copy Fail klassi haavatavus, mis annab Linuxis root \u00f5igused","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

Avalikustatud teave kuuenda haavatavuse (1, 2-3, 4, 5) kohta, mis v\u00f5imaldab mittet\u00e4ielikul lokaalsel kasutajal saada root \u00f5igusi, kirjutades andmeid lehe vahem\u00e4llu. Haavatavus sai koodnimeks PinTheft. Eksploidiprotekt on saadaval. CVE-koodi ei ole veel m\u00e4\u00e4ratud. Parandust on seni saadaval ainult patchina, mis avaldati 5. mail ja 11. mail lisati netdev harusse, kuid ei ole veel tuumav\u00e4rskendustes saadaval. <\/p>\n

Haavatavus esineb RDS (Reliable Datagram Sockets) v\u00f5rguprotokolli teostuses, mis on m\u00f5eldud kiireks s\u00f5numivahetamiseks klastris, minimaalsete viivitustega ja garanteeritud kohaletoimetamisega. R\u00fcnnak on v\u00f5imalik s\u00fcsteemides, kus on sisse l\u00fclitatud io_uring alams\u00fcsteem (io_uring_disabled=0) ja tuum on kokku pandud CONFIG_RDS, CONFIG_RDS_TCP ja CONFIG_IO_URING valikute abil. Eksploidiks peab s\u00fcsteemis olema lugemiseks saadaval SUID-rootiga t\u00e4idetav fail. <\/p>\n

RDS_TCP tuumooduli automaatseks laadimiseks n\u00f5uab exploit RDS kaudu andmete saatmist, kasutades transporti SO_RDS_TRANSPORT=2. T\u00f5detakse, et k\u00f5igi testitud Linuxi distributsioonide seas on tuumoodul rds vaikimisi saadaval ainult Arch Linuxis. Haavatavuse v\u00e4ltimiseks saab blokeerida rds ja rds_tcp tuumoodulite automaatlaadimise: rmmod rds_tcp rds printf 'install rds \/bin\/false\ninstall rds_tcp \/bin\/false\n' > \/etc\/modprobe.d\/pintheft.conf <\/p>\n

Haavatavus on tingitud veast zerocopy mehhanismi rakendamises funktsioonis rds_message_zcopy_from_user(), mis muudab otse andmeid lehek\u00fcljekandjas, et v\u00e4ltida liigset puhverserverit. Vea korral ei puhastatud rm->data.op_nents v\u00e4lja, mis t\u00f5i kaasa bufrite topeltvabastamise (double-free). Vale v\u00e4\u00e4rtuse ilmumine viidete loendisse v\u00f5imaldas andmeid lehek\u00fcljekandjas \u00fcle kirjutada, manipuleerides io_uring fikseeritud bufrit n\u00e4itava punteriga. <\/p>\n

Muude aspektide seas on ekspluateerimise mehhanism t\u00fc\u00fcpiline k\u00f5igi selle klassi haavatavuste jaoks \u2014 r\u00fcndaja saavutab, et programmi fail on suid root lipuga lehek\u00fcljekandjas, mille j\u00e4rel asendab ELF-pealkirjas koodiga \/usr\/bin\/sh. P\u00e4rast seda manipuleerimist k\u00e4ivitamine toob m\u00e4llu mitte originaalse t\u00e4itmisfaili salvestusest, vaid muudetud koopia lehek\u00fcljekandjast. Erinevalt varasematest exploitidest on uus variant kohandatud ainult r\u00fcnnakuks utiliidile 'su', kuid seda saab rakendada ka siis, kui s\u00fcsteemis on selliseid suid-programme nagu mount, passwd, chsh, newgrp, umount ja pkexec.
\n
Allikas: opennet.ru<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"

\u0420\u0430\u0441\u043a\u0440\u044b\u0442\u0430 \u0438\u043d\u0444\u043e\u0440\u043c\u0430\u0446\u0438\u044f \u043e \u0448\u0435\u0441\u0442\u043e\u0439 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0438 (1, 2-3, 4, 5), \u043f\u043e\u0437\u0432\u043e\u043b\u044f\u044e\u0449\u0435\u0439 \u043d\u0435\u043f\u0440\u0438\u0432\u0438\u043b\u0435\u0433\u0438\u0440\u043e\u0432\u0430\u043d\u043d\u043e\u043c\u0443 \u043b\u043e\u043a\u0430\u043b\u044c\u043d\u043e\u043c\u0443 \u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u0442\u0435\u043b\u044e \u043f\u043e\u043b\u0443\u0447\u0438\u0442\u044c \u043f\u0440\u0430\u0432\u0430 root, \u043f\u0435\u0440\u0435\u0437\u0430\u043f\u0438\u0441\u0430\u0432 \u0434\u0430\u043d\u043d\u044b\u0435 \u0432 \u0441\u0442\u0440\u0430\u043d\u0438\u0447\u043d\u043e\u043c \u043a\u044d\u0448\u0435. \u0423\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u044c \u043f\u043e\u043b\u0443\u0447\u0438\u043b\u0430 \u043a\u043e\u0434\u043e\u0432\u043e\u0435 \u0438\u043c\u044f PinTheft. \u0414\u043e\u0441\u0442\u0443\u043f\u0435\u043d \u043f\u0440\u043e\u0442\u043e\u0442\u0438\u043f \u044d\u043a\u0441\u043f\u043b\u043e\u0438\u0442\u0430. CVE-\u0438\u0434\u0435\u043d\u0442\u0438\u0444\u0438\u043a\u0430\u0442\u043e\u0440 \u0435\u0449\u0451 \u043d\u0435 \u043f\u0440\u0438\u0441\u0432\u043e\u0435\u043d. \u0418\u0441\u043f\u0440\u0430\u0432\u043b\u0435\u043d\u0438\u0435 \u043f\u043e\u043a\u0430 \u0434\u043e\u0441\u0442\u0443\u043f\u043d\u043e \u0442\u043e\u043b\u044c\u043a\u043e \u0432 \u0432\u0438\u0434\u0435 \u043f\u0430\u0442\u0447\u0430, \u043a\u043e\u0442\u043e\u0440\u044b\u0439 \u043e\u043f\u0443\u0431\u043b\u0438\u043a\u043e\u0432\u0430\u043d 5 \u043c\u0430\u044f \u0438 11 \u043c\u0430\u044f \u0431\u044b\u043b \u043f\u0440\u0438\u043d\u044f\u0442\u0432 \u0432\u0435\u0442\u043a\u0443 netdev, \u043d\u043e \u043d\u0435 \u0432\u043a\u043b\u044e\u0447\u0451\u043d \u0432 […]<\/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-172753","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\udd47PinTheft \u2014 kuues Copy Fail klassi haavatavus, mis annab root \u00f5igused Linuxis | ProHoster","description":"Paljastatud kuues haavatavus (1, 2-3, 4, 5), mis v\u00f5imaldab privileegita kohalikul kasutajal saada root \u00f5igusi, kirjutades andmeid lehe vahem\u00e4llu \u00fcle.","canonical_url":"https:\/\/prohoster.info\/et\/blog\/news\/pintheft-shestaya-uyazvimost-klassa-copy-fail-predostavlyayushhaya-prava-root-v-linux","robots":"max-image-preview:large","keywords":"","webmasterTools":{"miscellaneous":""},"schema":null,"og:locale":"et_EE","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\udd47PinTheft \u2014 \u0448\u0435\u0441\u0442\u0430\u044f \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u044c \u043a\u043b\u0430\u0441\u0441\u0430 Copy Fail, \u043f\u0440\u0435\u0434\u043e\u0441\u0442\u0430\u0432\u043b\u044f\u044e\u0449\u0430\u044f \u043f\u0440\u0430\u0432\u0430 root \u0432 Linux | ProHoster","og:description":"\u0420\u0430\u0441\u043a\u0440\u044b\u0442\u0430 \u0438\u043d\u0444\u043e\u0440\u043c\u0430\u0446\u0438\u044f \u043e \u0448\u0435\u0441\u0442\u043e\u0439 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0438 (1, 2-3, 4, 5), \u043f\u043e\u0437\u0432\u043e\u043b\u044f\u044e\u0449\u0435\u0439 \u043d\u0435\u043f\u0440\u0438\u0432\u0438\u043b\u0435\u0433\u0438\u0440\u043e\u0432\u0430\u043d\u043d\u043e\u043c\u0443 \u043b\u043e\u043a\u0430\u043b\u044c\u043d\u043e\u043c\u0443 \u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u0442\u0435\u043b\u044e \u043f\u043e\u043b\u0443\u0447\u0438\u0442\u044c \u043f\u0440\u0430\u0432\u0430 root, \u043f\u0435\u0440\u0435\u0437\u0430\u043f\u0438\u0441\u0430\u0432 \u0434\u0430\u043d\u043d\u044b\u0435 \u0432 \u0441\u0442\u0440\u0430\u043d\u0438\u0447\u043d\u043e\u043c \u043a\u044d\u0448\u0435.","og:url":"https:\/\/prohoster.info\/et\/blog\/news\/pintheft-shestaya-uyazvimost-klassa-copy-fail-predostavlyayushhaya-prava-root-v-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":"2026-05-19T16:24:36+00:00","article:modified_time":"2026-05-19T16:24:36+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\/et\/wp-json\/wp\/v2\/posts\/172753","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/prohoster.info\/et\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/prohoster.info\/et\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/prohoster.info\/et\/wp-json\/wp\/v2\/users\/8"}],"replies":[{"embeddable":true,"href":"https:\/\/prohoster.info\/et\/wp-json\/wp\/v2\/comments?post=172753"}],"version-history":[{"count":0,"href":"https:\/\/prohoster.info\/et\/wp-json\/wp\/v2\/posts\/172753\/revisions"}],"wp:attachment":[{"href":"https:\/\/prohoster.info\/et\/wp-json\/wp\/v2\/media?parent=172753"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/prohoster.info\/et\/wp-json\/wp\/v2\/categories?post=172753"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/prohoster.info\/et\/wp-json\/wp\/v2\/tags?post=172753"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}