{"id":182816,"date":"2026-08-10T19:49:31","date_gmt":"2026-08-10T17:49:31","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/zapscape-uyazvimost-v-gipervizore-kvm-pozvolyayushhaya-poluchit-root-dostup-k-host-sisteme"},"modified":"2026-08-10T19:49:31","modified_gmt":"2026-08-10T17:49:31","slug":"zapscape-uyazvimost-v-gipervizore-kvm-pozvolyayushhaya-poluchit-root-dostup-k-host-sisteme","status":"publish","type":"post","link":"https:\/\/prohoster.info\/hu\/blog\/news\/zapscape-uyazvimost-v-gipervizore-kvm-pozvolyayushhaya-poluchit-root-dostup-k-host-sisteme","title":{"rendered":"Zapscape \u2014 a vulnerability in the KVM hypervisor that allows obtaining root access to the host system.","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

Felt\u00e1rult a KVM hypervisorban tal\u00e1lhat\u00f3 CVE-2026-64561 sz\u00e1m\u00fa sebezhet\u0151s\u00e9g, amely lehet\u0151v\u00e9 teszi a root jogosults\u00e1g\u00fa hozz\u00e1f\u00e9r\u00e9st a gazda k\u00f6rnyezethez, amennyiben a vend\u00e9g rendszerben m\u00e1r van root jogosults\u00e1g. A probl\u00e9ma helyi jogok emel\u00e9s\u00e9re is alkalmazhat\u00f3, ha hozz\u00e1f\u00e9r\u00e9s van a \/dev\/kvm eszk\u00f6zh\u00f6z (p\u00e9ld\u00e1ul RHEL rendszerekben ez a hozz\u00e1f\u00e9r\u00e9s minden felhaszn\u00e1l\u00f3nak meg van adva). El\u00e9rhet\u0151 egy protot\u00edpus exploit a let\u00f6lt\u00e9shez. A probl\u00e9m\u00e1nak a Zapscape k\u00f3dnevet adt\u00e1k. <\/p>\n

A sebezhet\u0151s\u00e9g a mem\u00f3ria felszabad\u00edt\u00e1sa ut\u00e1ni hozz\u00e1f\u00e9r\u00e9s (use-after-free) miatt l\u00e9p fel a hypervisor komponenseiben. KVM<\/a>, amelyeket a virtu\u00e1lis g\u00e9pen hajtanak v\u00e9gre a mem\u00f3ria kezel\u0151 egys\u00e9g (MMU) emul\u00e1ci\u00f3ja \u00e9s a c\u00edmek ford\u00edt\u00e1sa c\u00e9lj\u00e1b\u00f3l a gazda \u00e9s vend\u00e9g rendszer k\u00f6z\u00f6tt. A sebezhet\u0151s\u00e9g az Intel \u00e9s AMD processzorokkal rendelkez\u0151 rendszerekben jelentkezik a shadow oldalak rekurz\u00edv t\u00f6rl\u00e9se folyam\u00e1n, ami a MMU mem\u00f3ria felszabad\u00edt\u00e1sa sor\u00e1n t\u00f6rt\u00e9nik (a KVM rekurz\u00edvan t\u00f6rli a gy\u00f6k\u00e9r shadow oldalt, amely tov\u00e1bbra is haszn\u00e1latban van a MMU tiszt\u00edt\u00e1sakor). <\/p>\n

A probl\u00e9ma egy hat \u00e9vvel ezel\u0151tti hiba k\u00f6vetkezm\u00e9nye, amelyet n\u00e9h\u00e1ny nappal ezel\u0151tt jav\u00edtottak ki a 7.1.6, 6.18.42 \u00e9s 6.6.148 kernel friss\u00edt\u00e9sekben. A sebezhet\u0151s\u00e9gek kijav\u00edt\u00e1s\u00e1nak \u00e1llapot\u00e1t az al\u00e1bbi oldalakon lehet felm\u00e9rni: Debian, Ubuntu, SUSE\/openSUSE, RHEL, Gentoo, Arch, Fedora.
\n
Forr\u00e1s: 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\u0431 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0438 (CVE-2026-64561) \u0432 \u0433\u0438\u043f\u0435\u0440\u0432\u0438\u0437\u043e\u0440\u0435 KVM, \u043f\u043e\u0437\u0432\u043e\u043b\u044f\u044e\u0449\u0435\u0439 \u043f\u043e\u043b\u0443\u0447\u0438\u0442\u044c \u0434\u043e\u0441\u0442\u0443\u043f \u0441 \u043f\u0440\u0430\u0432\u0430\u043c\u0438 root \u043a \u0445\u043e\u0441\u0442-\u043e\u043a\u0440\u0443\u0436\u0435\u043d\u0438\u044e \u043f\u0440\u0438 \u043d\u0430\u043b\u0438\u0447\u0438\u0438 \u0434\u043e\u0441\u0442\u0443\u043f\u0430 \u0441 \u043f\u0440\u0430\u0432\u0430\u043c\u0438 root \u0432 \u0433\u043e\u0441\u0442\u0435\u0432\u043e\u0439 \u0441\u0438\u0441\u0442\u0435\u043c\u0435. \u041f\u0440\u043e\u0431\u043b\u0435\u043c\u0430 \u0442\u0430\u043a\u0436\u0435 \u043c\u043e\u0436\u0435\u0442 \u043f\u0440\u0438\u043c\u0435\u043d\u044f\u0442\u044c\u0441\u044f \u0434\u043b\u044f \u043b\u043e\u043a\u0430\u043b\u044c\u043d\u043e\u0433\u043e \u043f\u043e\u0432\u044b\u0448\u0435\u043d\u0438\u044f \u0441\u0432\u043e\u0438\u0445 \u043f\u0440\u0438\u0432\u0438\u043b\u0435\u0433\u0438\u0439 \u043f\u0440\u0438 \u043d\u0430\u043b\u0438\u0447\u0438\u0438 \u0434\u043e\u0441\u0442\u0443\u043f\u0430 \u043a \u0443\u0441\u0442\u0440\u043e\u0439\u0441\u0442\u0432\u0443 \/dev\/kvm (\u043d\u0430\u043f\u0440\u0438\u043c\u0435\u0440, \u0432 RHEL \u043f\u043e\u0434\u043e\u0431\u043d\u044b\u0439 \u0434\u043e\u0441\u0442\u0443\u043f \u043f\u0440\u0435\u0434\u043e\u0441\u0442\u0430\u0432\u043b\u044f\u0435\u0442\u0441\u044f \u0432\u0441\u0435\u043c \u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u0442\u0435\u043b\u044f\u043c). \u0414\u043b\u044f \u0437\u0430\u0433\u0440\u0443\u0437\u043a\u0438 \u0434\u043e\u0441\u0442\u0443\u043f\u0435\u043d \u043f\u0440\u043e\u0442\u043e\u0442\u0438\u043f \u044d\u043a\u0441\u043f\u043e\u0438\u0442\u0430. \u041f\u0440\u043e\u0431\u043b\u0435\u043c\u0435 \u043f\u0440\u0438\u0441\u0432\u043e\u0435\u043d\u043e […]<\/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-182816","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\udd47Zapscape \u2014 sebezhet\u0151s\u00e9g a KVM hypervisorban, amely lehet\u0151v\u00e9 teszi a root hozz\u00e1f\u00e9r\u00e9st a gazda rendszerhez | ProHoster","description":"Felt\u00e1rult a KVM hypervisorban tal\u00e1lhat\u00f3 CVE-2026-64561 sz\u00e1m\u00fa 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