{"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\/da\/blog\/news\/sctphantom-uyazvimost-v-yadre-linux-predostavlyayushhaya-root-dostup-i-vyhod-iz-kontejnera","title":{"rendered":"SCTPhantom \u2013 en s\u00e5rbarhed i Linux-kernen, der giver root-adgang og udgang fra containeren","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

I implementeringen af SCTP-protokollen, der tilbydes i Linux-kernen, er der opdaget en s\u00e5rbarhed (CVE-2026-64564), der giver en lokal bruger mulighed for at opn\u00e5 root-rettigheder i systemet. Blandt andet giver s\u00e5rbarheden adgang til root i hovedsystemet ved at k\u00f8re et exploit i en isoleret container. En prototype af exploit'et er blevet udarbejdet, og dens funktionalitet er demonstreret i Debian 13, Rocky Linux 9, RHEL 9 og Ubuntu 24.04 med kernerne 5.14, 6.6, 6.8 og 6.12. <\/p>\n

S\u00e5rbarheden opst\u00e5r som f\u00f8lge af adgangen til allerede frigivet hukommelse i koden for dynamisk rekonfiguration af SCTP-adresser (ASCONF). Kernen cacher en pegepind til transporten (asconf->transport), som angivet i pakken, men den tilknyttede hukommelse kan blive frigivet, mens selve pegepinden til den allerede frigivne hukommelse forts\u00e6tter med at blive anvendt ved behandling af andre kommandoer. Angrebet udf\u00f8res ved at sende en bestemt sekvens af ASCONF-kommandoer til rekonfiguration af adressen til en lokal sokkel: f\u00f8rst sendes en DEL-IP-pakke for at fjerne transporten for en specifik IP, efterfulgt af en DEL-IP-pakke med angivelse af masken 0.0.0.0, hvis behandling vil resultere i genbrug af den tilbagev\u00e6rende h\u00e6ngende pegepind. <\/p>\n

S\u00e5rbarheden stammer fra en fejl, der blev beg\u00e5et for 18 \u00e5r siden i kernen 2.6.25 (2008) og rettet i versionerne 6.6.148, 6.12.101, 6.18.42, 7.1.6 og 7.2-rc5. Status for udbedringen af s\u00e5rbarheder i distributionerne kan vurderes p\u00e5 disse sider: Debian, Ubuntu, SUSE\/openSUSE, RHEL, Gentoo, Arch, Fedora.
\n
Kilde: opennet.ru<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"

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[…]<\/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\u00e5rbarhed i Linux-kernen, der giver root-adgang og udgang fra containeren | ProHoster","description":"I implementeringen af SCTP-protokollen, der tilbydes i Linux-kernen, er der opdaget en s\u00e5rbarhed (CVE-2026-64564), der giver en lokal bruger mulighed for at opn\u00e5 root-rettigheder i 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