{"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\/pt\/blog\/news\/zapscape-uyazvimost-v-gipervizore-kvm-pozvolyayushhaya-poluchit-root-dostup-k-host-sisteme","title":{"rendered":"Zapscape \u2014 vulnerabilidade no hipervisor KVM que permite obter acesso root ao sistema host","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

Foi revelada uma vulnerabilidade (CVE-2026-64561) no hipervisor KVM, que permite o acesso com privil\u00e9gios de root ao ambiente host quando h\u00e1 acesso com privil\u00e9gios de root no sistema convidado. O problema tamb\u00e9m pode ser utilizado para eleva\u00e7\u00e3o local de privil\u00e9gios se houver acesso ao dispositivo \/dev\/kvm (por exemplo, no RHEL, tal acesso \u00e9 concedido a todos os usu\u00e1rios). Um prot\u00f3tipo de exploit est\u00e1 dispon\u00edvel para download. O problema recebeu o nome de c\u00f3digo Zapscape. <\/p>\n

A vulnerabilidade \u00e9 causada por uma refer\u00eancia \u00e0 mem\u00f3ria ap\u00f3s a sua libera\u00e7\u00e3o (use-after-free) nos componentes do hipervisor KVM<\/a>, executados no lado da m\u00e1quina virtual para emular o bloco de controle de mem\u00f3ria (MMU) e realizar a tradu\u00e7\u00e3o de endere\u00e7os entre o host e o sistema convidado. A vulnerabilidade se manifesta em sistemas com processadores Intel e AMD durante a remo\u00e7\u00e3o recursiva de p\u00e1ginas de sombra de mem\u00f3ria, que ocorre ao liberar a mem\u00f3ria da MMU (o KVM remove recursivamente a p\u00e1gina de sombra raiz, que continua sendo utilizada durante a limpeza da MMU). <\/p>\n

O problema foi causado por um erro cometido h\u00e1 6 anos e corrigido h\u00e1 alguns dias nas atualiza\u00e7\u00f5es do kernel 7.1.6, 6.18.42 e 6.6.148. O status da corre\u00e7\u00e3o das vulnerabilidades nas distribui\u00e7\u00f5es pode ser avaliado nas seguintes p\u00e1ginas: 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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\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 vulnerabilidade no hipervisor KVM que permite acesso root ao sistema host | ProHoster","description":"Foi revelada uma vulnerabilidade (CVE-2026-64561) no hipervisor KVM, que permite o acesso com privil\u00e9gios de root ao ambiente host quando h\u00e1 acesso 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