{"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\/pl\/blog\/news\/zapscape-uyazvimost-v-gipervizore-kvm-pozvolyayushhaya-poluchit-root-dostup-k-host-sisteme","title":{"rendered":"Zapscape \u2014 luka w hypervisorze KVM, pozwalaj\u0105ca uzyska\u0107 dost\u0119p root do systemu gospodarza","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

Ujawniono informacje o podatno\u015bci (CVE-2026-64561) w hipernadzorze KVM, kt\u00f3ra umo\u017cliwia uzyskanie dost\u0119pu z uprawnieniami root do hosta przy posiadaniu dost\u0119pu z uprawnieniami root w systemie go\u015bcia. Problem ten mo\u017ce by\u0107 r\u00f3wnie\u017c wykorzystany do lokalnego podniesienia uprawnie\u0144 przy dost\u0119pie do urz\u0105dzenia \/dev\/kvm (na przyk\u0142ad, w RHEL taki dost\u0119p maj\u0105 wszyscy u\u017cytkownicy). Prototyp exploita jest dost\u0119pny do pobrania. Problemowi nadano nazw\u0119 kodow\u0105 Zapscape. <\/p>\n

Podatno\u015b\u0107 jest spowodowana dost\u0119pem do pami\u0119ci po jej zwolnieniu (use-after-free) w sk\u0142adnikach hipernadzoru KVM<\/a>, wykonywanych po stronie maszyny wirtualnej w celu emulacji jednostki zarz\u0105dzania pami\u0119ci\u0105 (MMU) oraz translacji adres\u00f3w mi\u0119dzy hostem a systemem go\u015bcia. Podatno\u015b\u0107 objawia si\u0119 w systemach z procesorami Intel i AMD w trakcie rekurencyjnego usuwania stron pami\u0119ci shadow, co zachodzi podczas zwalniania pami\u0119ci MMU (KVM rekurencyjnie usuwa g\u0142\u00f3wn\u0105 stron\u0119 shadow, kt\u00f3ra jest nadal u\u017cywana podczas czyszczenia MMU). <\/p>\n

Problem spowodowany jest b\u0142\u0119dem pope\u0142nionym 6 lat temu i napRawionym kilka dni temu w aktualizacjach j\u0105dra 7.1.6, 6.18.42 oraz 6.6.148. Status eliminowania podatno\u015bci w dystrybucjach mo\u017cna oceni\u0107 na stronach: Debian, Ubuntu, SUSE\/openSUSE, RHEL, Gentoo, Arch, Fedora.
\n
\u0179r\u00f3d\u0142o: 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\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 podatno\u015b\u0107 w hipernadzorze KVM, umo\u017cliwiaj\u0105ca uzyskanie dost\u0119pu root do systemu hosta | ProHoster","description":"Ujawniono informacje o podatno\u015bci (CVE-2026-64561) w hipernadzorze KVM, kt\u00f3ra umo\u017cliwia uzyskanie dost\u0119pu 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