{"id":170698,"date":"2026-05-15T06:24:34","date_gmt":"2026-05-15T04:24:34","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/uyazvimost-v-cpu-amd-zen-2-pozvolyayushhaya-povysit-privilegii-i-obojti-izolyacziyu-virtualnyh-mashin"},"modified":"2026-05-15T06:24:34","modified_gmt":"2026-05-15T04:24:34","slug":"uyazvimost-v-cpu-amd-zen-2-pozvolyayushhaya-povysit-privilegii-i-obojti-izolyacziyu-virtualnyh-mashin","status":"publish","type":"post","link":"https:\/\/prohoster.info\/hu\/blog\/news\/uyazvimost-v-cpu-amd-zen-2-pozvolyayushhaya-povysit-privilegii-i-obojti-izolyacziyu-virtualnyh-mashin","title":{"rendered":"Az AMD Zen 2 CPU sebezhet\u0151s\u00e9ge, amely lehet\u0151v\u00e9 teszi a jogosults\u00e1gok emel\u00e9s\u00e9t \u00e9s a virtu\u00e1lis g\u00e9pek izol\u00e1ci\u00f3j\u00e1nak megker\u00fcl\u00e9s\u00e9t","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

Az AMD nyilv\u00e1noss\u00e1gra hozta a Zen 2 mikroarchitekt\u00far\u00e1j\u00fa processzorokban fellelhet\u0151 sebezhet\u0151s\u00e9get (CVE-2025-54518), amely az objektumk\u00f3dok gyors\u00edt\u00f3t\u00e1r\u00e1nak s\u00e9r\u00fcl\u00e9s\u00e9t okozza. A sebezhet\u0151s\u00e9g sikeres kihaszn\u00e1l\u00e1sa lehet\u0151v\u00e9 teszi a CPU utas\u00edt\u00e1sainak v\u00e9grehajt\u00e1s\u00e1t magasabb jogosults\u00e1gi szinten. A gyakorlatban a probl\u00e9ma potenci\u00e1lisan lehet\u0151v\u00e9 teszi, hogy a felhaszn\u00e1l\u00f3i t\u00e9rb\u0151l a magi jogokkal rendelkez\u0151 k\u00f3dot futtassunk, vagy hozz\u00e1f\u00e9rj\u00fcnk a gazda k\u00f6rnyezethez a virtu\u00e1lis g\u00e9pb\u0151l. <\/p>\n

A sebezhet\u0151s\u00e9get az AMD munkat\u00e1rsai fedezt\u00e9k fel, a kihaszn\u00e1l\u00e1s r\u00e9szletei m\u00e9g nincsenek megadva. \u00c1ll\u00edt\u00e1saik szerint a probl\u00e9m\u00e1t a megosztott er\u0151forr\u00e1sok helytelen elk\u00fcl\u00f6n\u00edt\u00e9se okozza az objektumk\u00f3dok CPU gyors\u00edt\u00f3t\u00e1r\u00e1val v\u00e9gzett m\u0171veletek sor\u00e1n. A gyors\u00edt\u00f3t\u00e1rban l\u00e9v\u0151 elemek s\u00e9r\u00fcl\u00e9s\u00e9n kereszt\u00fcl a t\u00e1mad\u00f3 megv\u00e1ltoztathatja a m\u00e1s jogosults\u00e1gi szinten v\u00e9grehajtott utas\u00edt\u00e1sokat. <\/p>\n

A sebezhet\u0151s\u00e9g csak az AMD Zen2 mikroarchitekt\u00far\u00e1j\u00fa processzorain jelenik meg (Fam17h). A probl\u00e9ma \u00e9rinti a Xen hypervisort, \u00e9s felhaszn\u00e1lhat\u00f3 az elk\u00fcl\u00f6n\u00edt\u00e9s megker\u00fcl\u00e9s\u00e9re. A Xen 4.17 \u00e9s 4.21 k\u00f6z\u00f6tti \u00e1gaihoz jav\u00edt\u00e1sokat tettek k\u00f6zz\u00e9. A sebezhet\u0151s\u00e9g blokkol\u00e1s\u00e1ra szolg\u00e1l\u00f3 jav\u00edt\u00e1st szint\u00e9n \u00e1tadt\u00e1k a Linux kernelbe val\u00f3 integr\u00e1l\u00e1sra. <\/p>\n

Az AMD Ryzen 3000, 4000, 5000, 7020, 7030 \u00e9s Threadripper PRO 3000 WX asztali \u00e9s mobil CPU sorozatai eset\u00e9n a sebezhet\u0151s\u00e9get tavaly \u0151sszel megsz\u00fcntett\u00e9k. Az AMD Ryzen Embedded V2000 be\u00e1gyazott CPU-k eset\u00e9ben a sebezhet\u0151s\u00e9get december v\u00e9g\u00e9n orvosolt\u00e1k. Az AMD EPYC 7002 sorozat\u00fa processzorok eset\u00e9ben a probl\u00e9ma megoldatlan, \u00e9s azt javasolj\u00e1k, hogy az oper\u00e1ci\u00f3s rendszer szintj\u00e9n blokkolj\u00e1k.
\n
Forr\u00e1s: opennet.ru<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"

\u041a\u043e\u043c\u043f\u0430\u043d\u0438\u044f AMD \u0440\u0430\u0441\u043a\u0440\u044b\u043b\u0430 \u0441\u0432\u0435\u0434\u0435\u043d\u0438\u044f \u043e\u0431 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0438 (CVE-2025-54518) \u0432 \u043f\u0440\u043e\u0446\u0435\u0441\u0441\u043e\u0440\u0430\u0445 \u043d\u0430 \u0431\u0430\u0437\u0435 \u043c\u0438\u043a\u0440\u043e\u0430\u0440\u0445\u0438\u0442\u0435\u043a\u0442\u0443\u0440\u044b Zen 2, \u0432\u044b\u0437\u044b\u0432\u0430\u044e\u0449\u0435\u0439 \u043f\u043e\u0432\u0440\u0435\u0436\u0434\u0435\u043d\u0438\u0435 \u043a\u044d\u0448\u0430 \u043e\u0431\u044a\u0435\u043a\u0442\u043d\u044b\u0445 \u043a\u043e\u0434\u043e\u0432. \u0423\u0441\u043f\u0435\u0448\u043d\u0430\u044f \u044d\u043a\u0441\u043f\u043b\u0443\u0430\u0442\u0430\u0446\u0438\u044f \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0438 \u043f\u043e\u0437\u0432\u043e\u043b\u044f\u0435\u0442 \u0432\u044b\u043f\u043e\u043b\u043d\u0438\u0442\u044c \u0438\u043d\u0441\u0442\u0440\u0443\u043a\u0446\u0438\u0438 CPU \u043d\u0430 \u0431\u043e\u043b\u0435\u0435 \u0432\u044b\u0441\u043e\u043a\u043e\u043c \u0443\u0440\u043e\u0432\u043d\u0435 \u043f\u0440\u0438\u0432\u0438\u043b\u0435\u0433\u0438\u0439. \u041d\u0430 \u043f\u0440\u0430\u043a\u0442\u0438\u043a\u0435, \u043f\u0440\u043e\u0431\u043b\u0435\u043c\u0430 \u043f\u043e\u0442\u0435\u043d\u0446\u0438\u0430\u043b\u044c\u043d\u043e \u043f\u043e\u0437\u0432\u043e\u043b\u044f\u0435\u0442 \u043f\u043e\u0432\u044b\u0441\u0438\u0442\u044c \u0441\u0432\u043e\u0438 \u043f\u0440\u0438\u0432\u0438\u043b\u0435\u0433\u0438\u0438 \u0432 \u0441\u0438\u0441\u0442\u0435\u043c\u0435, \u043d\u0430\u043f\u0440\u0438\u043c\u0435\u0440, \u0438\u0437 \u043f\u0440\u043e\u0441\u0442\u0440\u0430\u043d\u0441\u0442\u0432\u0430 \u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u0442\u0435\u043b\u044f \u0434\u043e\u0431\u0438\u0442\u044c\u0441\u044f \u0432\u044b\u043f\u043e\u043b\u043d\u0435\u043d\u0438\u044f \u043a\u043e\u0434\u0430 \u0441 \u043f\u0440\u0430\u0432\u0430\u043c\u0438 \u044f\u0434\u0440\u0430 \u0438\u043b\u0438 \u043f\u043e\u043b\u0443\u0447\u0438\u0442\u044c \u0434\u043e\u0441\u0442\u0443\u043f \u043a […]<\/p>\n","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"author":8,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[702],"tags":[],"class_list":["post-170698","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\t\t\n\n","aioseo_head_json":{"title":"\ud83e\udd47Az AMD Zen 2 CPU sebezhet\u0151s\u00e9ge, amely lehet\u0151v\u00e9 teszi a jogosults\u00e1gok emel\u00e9s\u00e9t \u00e9s a virtu\u00e1lis g\u00e9pek izol\u00e1ci\u00f3j\u00e1nak megker\u00fcl\u00e9s\u00e9t | 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\u043c\u0438\u043a\u0440\u043e\u0430\u0440\u0445\u0438\u0442\u0435\u043a\u0442\u0443\u0440\u044b Zen 2, \u0432\u044b\u0437\u044b\u0432\u0430\u044e\u0449\u0435\u0439 \u043f\u043e\u0432\u0440\u0435\u0436\u0434\u0435\u043d\u0438\u0435 \u043a\u044d\u0448\u0430 \u043e\u0431\u044a\u0435\u043a\u0442\u043d\u044b\u0445 \u043a\u043e\u0434\u043e\u0432.","og:url":"https:\/\/prohoster.info\/hu\/blog\/news\/uyazvimost-v-cpu-amd-zen-2-pozvolyayushhaya-povysit-privilegii-i-obojti-izolyacziyu-virtualnyh-mashin","og:image":"https:\/\/prohoster.info\/wp-content\/uploads\/2021\/11\/logo-350.jpg","og:image:secure_url":"https:\/\/prohoster.info\/wp-content\/uploads\/2021\/11\/logo-350.jpg","og:image:width":350,"og:image:height":350,"article:published_time":"2026-05-15T04:24:34+00:00","article:modified_time":"2026-05-15T04:24:34+00:00","article:publisher":"https:\/\/www.facebook.com\/prohoster","article:author":"https:\/\/www.facebook.com\/prohoster"},"aioseo_meta_data":[],"gt_translate_keys":[{"key":"link","format":"url"}],"_links":{"self":[{"href":"https:\/\/prohoster.info\/hu\/wp-json\/wp\/v2\/posts\/170698","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/prohoster.info\/hu\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/prohoster.info\/hu\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/prohoster.info\/hu\/wp-json\/wp\/v2\/users\/8"}],"replies":[{"embeddable":true,"href":"https:\/\/prohoster.info\/hu\/wp-json\/wp\/v2\/comments?post=170698"}],"version-history":[{"count":0,"href":"https:\/\/prohoster.info\/hu\/wp-json\/wp\/v2\/posts\/170698\/revisions"}],"wp:attachment":[{"href":"https:\/\/prohoster.info\/hu\/wp-json\/wp\/v2\/media?parent=170698"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/prohoster.info\/hu\/wp-json\/wp\/v2\/categories?post=170698"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/prohoster.info\/hu\/wp-json\/wp\/v2\/tags?post=170698"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}