{"id":183301,"date":"2026-09-09T22:54:13","date_gmt":"2026-09-09T20:54:13","guid":{"rendered":"https:\/\/prohoster.info\/blog\/news\/18-uyazvimostej-v-yadre-linux-c-eksploitami-dlya-polucheniya-prav-root-v-sisteme"},"modified":"2026-09-09T22:54:19","modified_gmt":"2026-09-09T20:54:19","slug":"18-linux-kernel-vulnerabilities-with-exploits-to-gain-root-access","status":"publish","type":"post","link":"https:\/\/prohoster.info\/et\/blog\/news\/18-linux-kernel-vulnerabilities-with-exploits-to-gain-root-access","title":{"rendered":"18 haavatavust Linuxi kernelis koos exploit\u2019idega root-\u00f5iguste saamiseks s\u00fcsteemis","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p>Nebula Security'i uurijad avaldasid teavet 18 Linuxi s\u00fcdamiku haavatavuse kohta ja valmistasid nende jaoks eksploidid, mis v\u00f5imaldavad tavakasutajal saada s\u00fcsteemis root \u00f5igusi. Haavatavused on k\u00f5rvaldatud erinevates kevadistes ja suvistes s\u00fcdamiku uuendustes. Tuvastatud probleemid:  <\/p>\n<ul>\n<li class=\"l\"> CVE-2026-43502 (exploitable) \u2014 haavatavus RDS (Reliable Datagram Sockets) v\u00f5rgus\u00fcsteemis, mis on tingitud m\u00e4lu kinnitatud lehtede vale puhastamise tegemisest andmete saatmise t\u00f5rkel zerocopy re\u017eiimis enne s\u00f5numi j\u00e4rjekorda panemist. Probleem sai koodnimeks ZcopyReaper ja ilmneb alates tuuma versioonist 4.17, ning see lahendati tuumas mais. Haavatavust on v\u00f5imalik kasutada s\u00fcsteemides, kus tuum on kokku pandud valikute CONFIG_INET=y, CONFIG_AIO=y, CONFIG_RDS=y|m ja CONFIG_RDS_TCP=y|m (need on tavaliselt vaikimisi seadistatud). Kasutaja identifikaatorite ruumide haldamiseks r\u00fcnnakuks \u00f5igusi ei n\u00f5uta. Eksploidimisi on demonstreeritud openSUSE'i vaikimisi tuumaga 6.4.\n<li class=\"l\"> CVE-2026-80714 (exploitable) \u2014 haavatavus IPVS (IP Virtual Server) alam-s\u00fcsteemis, mis on p\u00f5hjustatud p\u00e4\u00e4su muutmisest m\u00e4lu juurde p\u00e4rast selle vabastamist valesti m\u00e4\u00e4ratud IP_VS_CONN_F_ONE_PACKET lipu t\u00f5ttu \u00fchenduse s\u00fcnkroonimisel, mis p\u00e4rast \u00fchenduse eluea l\u00f5ppu viib rippuvate pointerite j\u00e4\u00e4miseni hash-tabelisse, viidates juba vabastatud ip_vs_conn struktuurile. Probleem lahendati 19. augustil. Eksploidimisi on demonstreeritud Debian 13-ga, tuumaga 6.12.\n<li class=\"l\"> CVE-2026-74597 (exploitable) \u2014 haavatavus ip6_tunnel draiveris, mis on tingitud vale offset'i rakendamisest kapseldatud paketi HAO (Home Address Option) suhtes, mis arvutatakse v\u00e4lise paketi p\u00f5hjal. Kapseldatud paketi edastamise kaudu, millel on spetsiaalselt vormistatud pealkiri, on v\u00f5imalik saavutada andmete kirjutamine v\u00e4ljapoole eraldatud puhvrit. Probleem lahendati 19. augustil. Eksploidimisi on demonstreeritud CentOS 6.12 tuumaga.\n<li class=\"l\"> CVE-2026-74581 (exploitable) \u2014 haavatavus IPv6 marsruuditabelite t\u00f6\u00f6tlemise koodis, mis on tingitud m\u00e4lu juurde p\u00e4\u00e4semisest p\u00e4rast selle vabastamist (p\u00e4rast marsruudi vabastamist j\u00e4i aktiivne pointer sellele marsruudile). Probleem lahendati 19. augustil. Eksploidimisi on demonstreeritud Debian 13-ga, tuumaga 6.12.\n<li class=\"l\"> CVE-2026-74480 (exploitable) \u2014 haavatavus v\u00f5rgusildade alam-s\u00fcsteemis, mis on p\u00f5hjustatud m\u00e4lu juurde p\u00e4\u00e4semisest p\u00e4rast selle vabastamist multicast-grupi v\u00e4ljumise koodis (p\u00e4rast elemendi eemaldamist seotud loendist ei katkestatud ts\u00fcklit ning iteratsioonide k\u00e4igus p\u00e4\u00e4seti j\u00e4lgijale, mis j\u00e4i p\u00e4rast eemaldamist alles). Probleem lahendati 9. augustil. Eksploidimisi on demonstreeritud RHEL 10 tuumaga 6.12.\n<li class=\"l\"> CVE-2026-72255 (exploitable) \u2014 haavatavus nf_queue moodulis netfilter'i s\u00fcsteemis, mis tekib m\u00e4lule juurdep\u00e4\u00e4su t\u00f5ttu p\u00e4rast selle vabastamist, kui p\u00e4rast v\u00f5rgu silla kustutamist oli seotud paket NFQUEUE's veel j\u00e4rjekorras. Probleem lahendati 24. juulil. Ekspluateerimise t\u00f6\u00f6 n\u00e4idati Ubuntu 26.04, kernel 7.0 versioonil.\n<li class=\"l\"> CVE-2026-72137 (exploitable) \u2014 haavatavus IPSec XFRM moodulis, mis viib skb struktuuri topelt vabastamiseni keepalive-paketi saatmise vea korral. Probleem lahendati 30. juunil. Ekspluateerimise t\u00f6\u00f6 n\u00e4idati Ubuntu 26.04, kernel 7.0 versioonil.\n<li class=\"l\"> CVE-2026-68376 (exploitable) \u2014 haavatavus SCTP protokolli rakenduses, mis p\u00f5hjustab bufripuhvri \u00fclet\u00e4itumise vale massiivi suuruse arvestamise t\u00f5ttu HMAC-i identifikaatorite hoidmiseks. Probleem lahendati 3. augustil. Ekspluateerimise t\u00f6\u00f6 n\u00e4idati Ubuntu 26.04, kernel 7.0 versioonil.\n<li class=\"l\"> CVE-2026-68162 (exploitable) \u2014 haavatavus SCTP protokolli rakenduses, mis p\u00f5hjustab m\u00e4lule juurdep\u00e4\u00e4su p\u00e4rast selle vabastamist sysctl parameetri muutmise katse k\u00e4igus p\u00e4rast juhtimisvooliku sulgemist. Probleem lahendati 10. aprillil. Ekspluateerimise t\u00f6\u00f6 n\u00e4idati Ubuntu 26.04, kernel 7.0 versioonil.\n<li class=\"l\"> CVE-2026-64560 (exploitable) \u2014 haavatavus posix-cpu-timer'is, mis p\u00f5hjustab m\u00e4lule juurdep\u00e4\u00e4su p\u00e4rast selle vabastamist, kuna tekib kergitus seisund, kui taimer eemaldatakse ja exec() kutsutakse p\u00e4rast l\u00f5imede grupi liidri muutmist. Probleem lahendati 5. juulil. Ekspluateerimise t\u00f6\u00f6 n\u00e4idati Google Pixel seadmel Android'i platvormil.\n<li class=\"l\"> CVE-2026-52933 (exploitable) \u2014 haavatavus io_uring alams\u00fcsteemis, mis kutsub esile m\u00e4lule juurdep\u00e4\u00e4su p\u00e4rast selle vabastamist, kui IO_POLL_CANCEL_FLAG lipp on seadistatud, t\u00f5lgendades atomic_read() v\u00e4\u00e4rtust negatiivse arvuna viidates viidatud arvu v\u00f5rreldes viite loendiga. Probleem lahendati 15. aprillil. Ekspluateerimise t\u00f6\u00f6 n\u00e4idati Fedora Linuxis, kernel 6.19 versioonil.\n<li class=\"l\"> CVE-2026-52924 (exploitable) \u2014 haavatavus SCTP protokolli rakenduses, mis p\u00f5hjustab m\u00e4lule juurdep\u00e4\u00e4su p\u00e4rast selle vabastamist, kuna aktiveeritud viidatud ja andmed j\u00e4\u00e4vad saatmise j\u00e4rjekorda p\u00e4rast voogude tabeli vabastamist tekkinud vea t\u00f5ttu 'Stale Cookie'. Probleem lahendati 19. juunil. Ekspluateerimise t\u00f6\u00f6 n\u00e4idati Ubuntu 26.04, kernel 7.0 versioonil.\n<li class=\"l\"> CVE-2026-52923 (eksplit) \u2014 haavatavus SysV IPC-alams\u00fcsteemis, mis p\u00f5hjustab m\u00e4lule juurdep\u00e4\u00e4su p\u00e4rast selle vabastamist seoses rippuva n\u00e4idiku j\u00e4\u00e4misega IDR struktuuris vabastatud indeksielemendile. Probleem lahendati 24. juulil. Ekspluudi t\u00f6\u00f6 on demonstreeritud RHEL 10 koos kerneliga 6.12.\n<li class=\"l\"> CVE-2026-52912 (eksplit) \u2014 haavatavus netfilteri modulis nf_queue, mis on p\u00f5hjustatud m\u00e4lule juurdep\u00e4\u00e4sust p\u00e4rast selle vabastamist vale n\u00e4idiku t\u00f6\u00f6tlemise t\u00f5ttu, p\u00e4rast v\u00f5rgu silla eemaldamist, kui seotud paketid on NFQUEUE-s j\u00e4rjekorras. Probleem lahendati 1. juunil. Ekspluudi t\u00f6\u00f6 on demonstreeritud openSUSE koos kerneliga 6.4.\n<li class=\"l\"> CVE-2026-43501 (eksplit) \u2014 haavatavus IPv6 SRH (Source Routing Header) p\u00e4iste \u00fcmberpakendamise koodis, mis p\u00f5hjustab andmete kirjutamist puhverest v\u00e4ljapoole tingitud tingimuste kontrollimise puudumisel, mille t\u00f5ttu uus p\u00e4is v\u00f5ib olla suurem kui vana. Probleem lahendati 7. mail. Ekspluudi t\u00f6\u00f6 on demonstreeritud kernelCTF v\u00f5istlusel.\n<li class=\"l\"> CVE-2026-43042 (eksplit) \u2014 haavatavus MPLS mehhanismis, mis p\u00f5hjustab andmete juurdep\u00e4\u00e4su puhverest v\u00e4ljapoole tingitud v\u00f5istlusolukorrast, mis tekib lukustamise samaaegsel lugemisel ja tabeli suuruse muutmisel. Probleem lahendati 11. aprillil. Ekspluudi t\u00f6\u00f6 on demonstreeritud Debian 13 koos kerneliga 6.12.\n<li class=\"l\"> CVE-2026-31678 (eksplit) \u2014 haavatavus openvswitch alams\u00fcsteemis, mis on p\u00f5hjustatud m\u00e4lule juurdep\u00e4\u00e4sust p\u00e4rast selle vabastamist v\u00f5istlusolukorrast, kui viide v\u00f5rgu seadmele eemaldatakse enne RCU (Read-Copy-Update) ts\u00fckli l\u00f5petamist. Probleem lahendati 2. aprillil. Ekspluudi t\u00f6\u00f6 on demonstreeritud Fedora Linux 44 koos kerneliga 6.19.\n<li class=\"l\"> CVE-2026-31659 (eksplit) \u2014 haavatavus B.A.T.M.A.N. (Better Approach to Mobile Ad-hoc Networking) protokolli rakenduses, mis p\u00f5hjustab puhveri \u00fclet\u00e4itumise kui intresside \u00fclet\u00e4itumise tingitud 16-bitiste v\u00e4\u00e4rtuste kasutamisel puhvri suuruse arvutamisel. Probleem lahendati 18. aprillil. Ekspluudi t\u00f6\u00f6 on demonstreeritud Arch Linux koos kerneliga 6.19.         <\/ul>\n<p>Allikas: <a content=\"nofollow\" rel=\"nofollow\" href=\"https:\/\/www.opennet.ru\/opennews\/art.shtml?num=66239\">opennet.ru<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"<p>\u0418\u0441\u0441\u043b\u0435\u0434\u043e\u0432\u0430\u0442\u0435\u043b\u0438 \u0438\u0437 \u043a\u043e\u043c\u043f\u0430\u043d\u0438\u0438 Nebula Security \u0440\u0430\u0441\u043a\u0440\u044b\u043b\u0438 \u0441\u0432\u0435\u0434\u0435\u043d\u0438\u044f \u043e 18 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u044f\u0445 \u0432 \u044f\u0434\u0440\u0435 Linux \u0438 \u043f\u043e\u0434\u0433\u043e\u0442\u043e\u0432\u0438\u043b\u0438 \u0434\u043b\u044f \u043d\u0438\u0445 \u044d\u043a\u0441\u043f\u043b\u043e\u0438\u0442\u044b, \u043f\u043e\u0437\u0432\u043e\u043b\u044f\u044e\u0449\u0438\u0435 \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 \u0432 \u0441\u0438\u0441\u0442\u0435\u043c\u0435. \u0423\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0438 \u0443\u0441\u0442\u0440\u0430\u043d\u0435\u043d\u044b \u0432 \u0440\u0430\u0437\u043b\u0438\u0447\u043d\u044b\u0445 \u0432\u0435\u0441\u0435\u043d\u043d\u0438\u0445 \u0438 \u043b\u0435\u0442\u043d\u0438\u0445 \u043e\u0431\u043d\u043e\u0432\u043b\u0435\u043d\u0438\u044f\u0445 \u044f\u0434\u0440\u0430. \u0412\u044b\u044f\u0432\u043b\u0435\u043d\u043d\u044b\u0435 \u043f\u0440\u043e\u0431\u043b\u0435\u043c\u044b: CVE-2026-43502 (\u044d\u043a\u0441\u043f\u043b\u043e\u0438\u0442) &#8212; \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u044c \u0432 \u0441\u0435\u0442\u0435\u0432\u043e\u0439 \u043f\u043e\u0434\u0441\u0438\u0441\u0442\u0435\u043c\u0435 RDS (Reliable Datagram Sockets), \u0432\u044b\u0437\u0432\u0430\u043d\u043d\u0430\u044f \u043d\u0435\u043a\u043e\u0440\u0440\u0435\u043a\u0442\u043d\u043e\u0439 \u043e\u0447\u0438\u0441\u0442\u043a\u043e\u0439 \u0437\u0430\u043a\u0440\u0435\u043f\u043b\u0451\u043d\u043d\u044b\u0445 \u0441\u0442\u0440\u0430\u043d\u0438\u0446 \u043f\u0430\u043c\u044f\u0442\u0438 [&hellip;]<\/p>\n","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"author":10,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[702],"tags":[],"class_list":["post-183301","post","type-post","status-publish","format-standard","hentry","category-news"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 5.0.2 - aioseo.com -->\n\t<meta name=\"description\" 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