{"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\/it\/blog\/news\/zapscape-uyazvimost-v-gipervizore-kvm-pozvolyayushhaya-poluchit-root-dostup-k-host-sisteme","title":{"rendered":"Zapscape \u2014 vulnerabilit\u00e0 nel hypervisor KVM che consente di ottenere accesso root al sistema host.","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

\u00c8 stata rivelata un'informazione su una vulnerabilit\u00e0 (CVE-2026-64561) nel hypervisor KVM che consente di ottenere accesso con privilegi di root all'ambiente host in caso di accesso con privilegi di root nel sistema guest. Il problema pu\u00f2 essere utilizzato anche per un'elevazione locale dei privilegi se si ha accesso al dispositivo \/dev\/kvm (ad esempio, in RHEL tale accesso \u00e8 concesso a tutti gli utenti). Un prototipo di exploit \u00e8 disponibile per il download. Al problema \u00e8 stato assegnato il nome in codice Zapscape. <\/p>\n

La vulnerabilit\u00e0 \u00e8 causata da un accesso alla memoria dopo la sua liberazione (use-after-free) nei componenti dell'hypervisor KVM<\/a>, eseguiti sul lato della macchina virtuale per emulare il blocco di controllo della memoria (MMU) e la traduzione degli indirizzi tra host e sistema guest. La vulnerabilit\u00e0 si manifesta su sistemi con processori Intel e AMD durante l'eliminazione ricorsiva delle shadow-page di memoria, che avviene quando si libera la memoria MMU (KVM elimina ricorsivamente la shadow-page radice, che continua a essere utilizzata durante la pulizia della MMU). <\/p>\n

Il problema \u00e8 causato da un errore commesso 6 anni fa ed \u00e8 stato corretto alcuni giorni fa negli aggiornamenti del kernel 7.1.6, 6.18.42 e 6.6.148. Lo stato di risoluzione delle vulnerabilit\u00e0 nei vari distribuzioni pu\u00f2 essere valutato alle seguenti pagine: Debian, Ubuntu, SUSE\/openSUSE, RHEL, Gentoo, Arch, Fedora.
\n
Fonte: opennet.ru<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"

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\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 vulnerabilit\u00e0 nell'hypervisor KVM che consente l'accesso root al sistema host | ProHoster","description":"\u00c8 stata rivelata un'informazione su una vulnerabilit\u00e0 (CVE-2026-64561) nel hypervisor KVM che consente di ottenere accesso con privilegi di 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