{"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\/fr\/blog\/news\/zapscape-uyazvimost-v-gipervizore-kvm-pozvolyayushhaya-poluchit-root-dostup-k-host-sisteme","title":{"rendered":"Zapscape \u2014 une vuln\u00e9rabilit\u00e9 dans l'hyperviseur KVM permettant d'obtenir un acc\u00e8s root au syst\u00e8me h\u00f4te","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

Des informations ont \u00e9t\u00e9 r\u00e9v\u00e9l\u00e9es concernant une vuln\u00e9rabilit\u00e9 (CVE-2026-64561) dans l'hyperviseur KVM, permettant d'acc\u00e9der avec des droits root \u00e0 l'environnement h\u00f4te lorsque l'acc\u00e8s avec des droits root est disponible dans le syst\u00e8me invit\u00e9. Ce probl\u00e8me peut \u00e9galement \u00eatre utilis\u00e9 pour une \u00e9l\u00e9vation de privil\u00e8ges locale en cas d'acc\u00e8s \u00e0 l'appareil \/dev\/kvm (par exemple, dans RHEL, cet acc\u00e8s est accord\u00e9 \u00e0 tous les utilisateurs). Un prototype de l'exploit est disponible au t\u00e9l\u00e9chargement. Le probl\u00e8me a \u00e9t\u00e9 nomm\u00e9 Zapscape. <\/p>\n

La vuln\u00e9rabilit\u00e9 est caus\u00e9e par un acc\u00e8s \u00e0 la m\u00e9moire apr\u00e8s sa lib\u00e9ration (use-after-free) dans les composants de l'hyperviseur. KVM<\/a>, ex\u00e9cut\u00e9s du c\u00f4t\u00e9 de la machine virtuelle pour \u00e9muler le bloc de contr\u00f4le de m\u00e9moire (MMU) et pour la traduction des adresses entre l'h\u00f4te et le syst\u00e8me invit\u00e9. La vuln\u00e9rabilit\u00e9 se manifeste sur les syst\u00e8mes avec des processeurs Intel et AMD lors de la suppression r\u00e9cursive des pages m\u00e9moire shadow, qui se produit lors de la lib\u00e9ration de la m\u00e9moire MMU (KVM supprime r\u00e9cursivement la page shadow racine, qui continue d'\u00eatre utilis\u00e9e pendant le nettoyage de la MMU). <\/p>\n

Le probl\u00e8me est caus\u00e9 par une erreur commise il y a 6 ans et corrig\u00e9e il y a quelques jours dans les mises \u00e0 jour du noyau 7.1.6, 6.18.42 et 6.6.148. L'\u00e9tat de la correction des vuln\u00e9rabilit\u00e9s dans les distributions peut \u00eatre \u00e9valu\u00e9 sur ces pages : Debian, Ubuntu, SUSE\/openSUSE, RHEL, Gentoo, Arch, Fedora.
\n
Source : 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\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 une vuln\u00e9rabilit\u00e9 dans l'hyperviseur KVM permettant d'acc\u00e9der en tant que root \u00e0 l'h\u00f4te | ProHoster","description":"Des informations ont \u00e9t\u00e9 r\u00e9v\u00e9l\u00e9es concernant une vuln\u00e9rabilit\u00e9 (CVE-2026-64561) dans 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