{"id":182837,"date":"2026-08-11T04:54:59","date_gmt":"2026-08-11T02:54:59","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/sctphantom-uyazvimost-v-yadre-linux-predostavlyayushhaya-root-dostup-i-vyhod-iz-kontejnera"},"modified":"2026-08-11T04:54:59","modified_gmt":"2026-08-11T02:54:59","slug":"sctphantom-uyazvimost-v-yadre-linux-predostavlyayushhaya-root-dostup-i-vyhod-iz-kontejnera","status":"publish","type":"post","link":"https:\/\/prohoster.info\/sv\/blog\/news\/sctphantom-uyazvimost-v-yadre-linux-predostavlyayushhaya-root-dostup-i-vyhod-iz-kontejnera","title":{"rendered":"SCTPhantom \u2014 en s\u00e5rbarhet i Linux-k\u00e4rnan som ger root-\u00e5tkomst och uttr\u00e4de fr\u00e5n en container","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

I implementeringen av SCTP-protokollet som erbjuds i Linux-k\u00e4rnan har en s\u00e5rbarhet (CVE-2026-64564) identifierats, vilket till\u00e5ter en lokal anv\u00e4ndare att erh\u00e5lla root-rettigheter i systemet. Bland annat g\u00f6r s\u00e5rbarheten det m\u00f6jligt att f\u00e5 root-\u00e5tkomst i huvudsystemet vid k\u00f6rning av ett exploit i en isolerad container. En prototyp av exploiten har tagits fram, vars funktion har demonsterats i distributionerna Debian 13, Rocky Linux 9, RHEL 9 och Ubuntu 24.04 med k\u00e4rnor 5.14, 6.6, 6.8 och 6.12. <\/p>\n

S\u00e5rbarheten orsakas av \u00e5tkomst till redan frigjord minne i koden f\u00f6r dynamisk omkonfigurering av SCTP-adresser (ASCONF). Kernen cachar en pekare till transporten (asconf->transport) som anges i paketet, men minnet kopplat till denna pekare kan ha rensats, medan pekaren till den redan frigjorda minnet forts\u00e4tter att anv\u00e4ndas vid hantering av andra kommandon. Attacken utf\u00f6rs genom att skicka en specifik sekvens av ASCONF-kommandon f\u00f6r omkonfigurering av adressen till en lokal socket: f\u00f6rst skickas ett DEL-IP-paket f\u00f6r att ta bort transporten f\u00f6r en specifik IP, f\u00f6ljt av ett DEL-IP-paket med masken 0.0.0.0, vars behandling resulterar i att den kvarvarande h\u00e4ngande pekaren \u00e5teranv\u00e4nds. <\/p>\n

S\u00e5rbarheten beror p\u00e5 ett misstag som gjordes f\u00f6r 18 \u00e5r sedan i k\u00e4rnan 2.6.25 (2008) och som har \u00e5tg\u00e4rdats i versionerna 6.6.148, 6.12.101, 6.18.42, 7.1.6 och 7.2-rc5. Statusen f\u00f6r \u00e5tg\u00e4rdandet av s\u00e5rbarheter i distributionerna kan bed\u00f6mas utifr\u00e5n f\u00f6ljande sidor: Debian, Ubuntu, SUSE\/openSUSE, RHEL, Gentoo, Arch, Fedora.
\n
K\u00e4lla: opennet.ru<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"

\u0412 \u0440\u0435\u0430\u043b\u0438\u0437\u0430\u0446\u0438\u0438 \u043f\u0440\u043e\u0442\u043e\u043a\u043e\u043b\u0430 SCTP, \u043f\u0440\u0435\u0434\u043b\u0430\u0433\u0430\u0435\u043c\u043e\u0439 \u0432 \u044f\u0434\u0440\u0435 Linux, \u0432\u044b\u044f\u0432\u043b\u0435\u043d\u0430 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u044c (CVE-2026-64564), \u043f\u043e\u0437\u0432\u043e\u043b\u044f\u044e\u0449\u0430\u044f \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 root-\u043f\u0440\u0438\u0432\u0438\u043b\u0435\u0433\u0438\u0438 \u0432 \u0441\u0438\u0441\u0442\u0435\u043c\u0435. \u0421\u0440\u0435\u0434\u0438 \u043f\u0440\u043e\u0447\u0435\u0433\u043e, \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u044c \u043f\u043e\u0437\u0432\u043e\u043b\u044f\u0435\u0442 \u043f\u043e\u043b\u0443\u0447\u0438\u0442\u044c root-\u0434\u043e\u0441\u0442\u0443\u043f \u0432 \u043e\u0441\u043d\u043e\u0432\u043d\u043e\u0439 \u0441\u0438\u0441\u0442\u0435\u043c\u0435 \u043f\u0440\u0438 \u0437\u0430\u043f\u0443\u0441\u043a\u0435 \u044d\u043a\u0441\u043f\u043b\u043e\u0438\u0442\u0430 \u0432 \u0438\u0437\u043e\u043b\u0438\u0440\u043e\u0432\u0430\u043d\u043d\u043e\u043c \u043a\u043e\u043d\u0442\u0435\u0439\u043d\u0435\u0440\u0435. \u041f\u043e\u0434\u0433\u043e\u0442\u043e\u0432\u043b\u0435\u043d \u043f\u0440\u043e\u0442\u043e\u0442\u0438\u043f \u044d\u043a\u0441\u043f\u043b\u043e\u0438\u0442\u0430, \u0440\u0430\u0431\u043e\u0442\u0430 \u043a\u043e\u0442\u043e\u0440\u043e\u0433\u043e \u043f\u0440\u043e\u0434\u0435\u043c\u043e\u043d\u0441\u0442\u0440\u0438\u0440\u043e\u0432\u0430\u043d\u0430 \u0432 \u0434\u0438\u0441\u0442\u0440\u0438\u0431\u0443\u0442\u0438\u0432\u0430\u0445 Debian 13, Rocky Linux 9, RHEL 9 \u0438 Ubuntu 24.04 \u0441 \u044f\u0434\u0440\u0430\u043c\u0438 5.14, 6.6, […]<\/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-182837","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\n","aioseo_head_json":{"title":"\ud83e\udd47SCTPhantom \u2014 en s\u00e5rbarhet i Linux-k\u00e4rnan som ger root-\u00e5tkomst och m\u00f6jligg\u00f6r uttr\u00e4de fr\u00e5n containern | ProHoster","description":"I implementeringen av SCTP-protokollet som erbjuds i Linux-k\u00e4rnan har en s\u00e5rbarhet (CVE-2026-64564) identifierats, vilket till\u00e5ter en lokal anv\u00e4ndare att erh\u00e5lla root-rettigheter i 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