{"id":181898,"date":"2026-06-04T14:48:17","date_gmt":"2026-06-04T12:48:17","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/uyazvimost-v-libinput-pozvolyayushhaya-povysit-svoi-privilegii-v-sisteme"},"modified":"2026-06-04T14:48:17","modified_gmt":"2026-06-04T12:48:17","slug":"uyazvimost-v-libinput-pozvolyayushhaya-povysit-svoi-privilegii-v-sisteme","status":"publish","type":"post","link":"https:\/\/prohoster.info\/hu\/blog\/news\/uyazvimost-v-libinput-pozvolyayushhaya-povysit-svoi-privilegii-v-sisteme","title":{"rendered":"libinput sebezhet\u0151s\u00e9g, amely lehet\u0151v\u00e9 teszi a rendszeren bel\u00fcli jogosults\u00e1gn\u00f6vel\u00e9st","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

A libinput k\u00f6nyvt\u00e1rban, amely egys\u00e9ges bemeneti veremmel rendelkezik a Wayland \u00e9s az X.Org Server sz\u00e1m\u00e1ra, egy sebezhet\u0151s\u00e9get fedeztek fel (CVE-t m\u00e9g nem rendeltek hozz\u00e1), amely lehet\u0151v\u00e9 teszi, hogy a helyi felhaszn\u00e1l\u00f3 root jogosults\u00e1gokkal v\u00e9grehajtsa a k\u00f3dot egy bemeneti virtu\u00e1lis eszk\u00f6z csatlakoztat\u00e1s\u00e1val, amelyet felhaszn\u00e1l\u00f3i t\u00e9rben emul\u00e1lnak uinput vagy uhid seg\u00edts\u00e9g\u00e9vel. A probl\u00e9ma a 1.31.3 \u00e9s 1.30.4 verzi\u00f3kban ker\u00fclt jav\u00edt\u00e1sra.<\/p>\n

A sebezhet\u0151s\u00e9g a libinput-device-group udev-kezeloj\u00e9ben tal\u00e1lhat\u00f3, \u00e9s
\naz okok miatt, hogy a speci\u00e1lis karakterek megfelel\u0151 escapingje hi\u00e1nyzik az eszk\u00f6z\u00f6kt\u0151l sz\u00e1rmaz\u00f3 attrib\u00fatumokban, amelyek az udev alrendszerbe ker\u00fclnek a «kulcs=\u00e9rt\u00e9k» form\u00e1tumban. A sorv\u00e9gi karakter (& #171;\n») attrib\u00fatumban val\u00f3 megad\u00e1sa lehet\u0151v\u00e9 teszi a saj\u00e1t udev szab\u00e1lyunk hozz\u00e1ad\u00e1s\u00e1t, p\u00e9ld\u00e1ul az uinput parancs UI_SET_PHYS(«poc\n<SECOND_KEY>=<\u00e9rt\u00e9k>») v\u00e9grehajt\u00e1s\u00e1val. Tetsz\u0151leges parancsok root jogokkal val\u00f3 v\u00e9grehajt\u00e1s\u00e1hoz elegend\u0151 az udev szab\u00e1lyok k\u00f6z\u00e9 a «REMOVE_CMD» tulajdons\u00e1got be\u00e1ll\u00edtani, amely a megadott parancsot a k\u00e9sz\u00fcl\u00e9k lekapcsol\u00e1sa ut\u00e1n futtatja.<\/p>\n

A sebezhet\u0151s\u00e9g kihaszn\u00e1l\u00e1s\u00e1hoz a t\u00e1mad\u00f3nak hozz\u00e1f\u00e9r\u00e9ssel kell rendelkeznie a \/dev\/uinput vagy \/dev\/uhid eszk\u00f6zh\u00f6z. \u00c1ltal\u00e1ban csak a root felhaszn\u00e1l\u00f3 f\u00e9r hozz\u00e1 az uinput-hoz \u00e9s uhid-hez, de n\u00e9mely disztrib\u00faci\u00f3ban olyan udev szab\u00e1lyok \u00e9rkeznek, amelyek lehet\u0151v\u00e9 teszik, hogy nem privilegiz\u00e1lt felhaszn\u00e1l\u00f3k is haszn\u00e1lhass\u00e1k az uinput-ot. P\u00e9ld\u00e1ul a Fedora telep\u00edt\u00e9sekor az steam-devices, antimicrox \u00e9s kdeconnectd csomagok telep\u00edt\u00e9sekor ilyen szab\u00e1lyok ker\u00fclnek be\u00e1ll\u00edt\u00e1sra. Kaphat\u00f3 egy exploit protot\u00edpus.
\n
Forr\u00e1s: opennet.ru<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"

\u0412 \u0431\u0438\u0431\u043b\u0438\u043e\u0442\u0435\u043a\u0435 libinput, \u043f\u0440\u0435\u0434\u043e\u0441\u0442\u0430\u0432\u043b\u044f\u044e\u0449\u0435\u0439 \u0443\u043d\u0438\u0444\u0438\u0446\u0438\u0440\u043e\u0432\u0430\u043d\u043d\u044b\u0439 \u0441\u0442\u0435\u043a \u0432\u0432\u043e\u0434\u0430 \u0434\u043b\u044f Wayland \u0438 X.Org Server, \u0432\u044b\u044f\u0432\u043b\u0435\u043d\u0430 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u044c (CVE \u043d\u0435 \u043d\u0430\u0437\u043d\u0430\u0447\u0435\u043d), \u043f\u043e\u0437\u0432\u043e\u043b\u044f\u044e\u0449\u0430\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 root \u0447\u0435\u0440\u0435\u0437 \u043f\u043e\u0434\u043a\u043b\u044e\u0447\u0435\u043d\u0438\u0435 \u043b\u043e\u043a\u0430\u043b\u044c\u043d\u044b\u043c \u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u0442\u0435\u043b\u0435\u043c \u0432\u0438\u0440\u0442\u0443\u0430\u043b\u044c\u043d\u043e\u0433\u043e \u0443\u0441\u0442\u0440\u043e\u0439\u0441\u0442\u0432\u0430 \u0432\u0432\u043e\u0434\u0430, \u0441\u044d\u043c\u0443\u043b\u0438\u0440\u043e\u0432\u0430\u043d\u043d\u043e\u0433\u043e \u0432 \u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u0442\u0435\u043b\u044c\u0441\u043a\u043e\u043c \u043f\u0440\u043e\u0441\u0442\u0440\u0430\u043d\u0441\u0442\u0432\u0435 \u0447\u0435\u0440\u0435\u0437 uinput \u0438\u043b\u0438 uhid. \u041f\u0440\u043e\u0431\u043b\u0435\u043c\u0430 \u0443\u0441\u0442\u0440\u0430\u043d\u0435\u043d\u0430 \u0432 \u0432\u044b\u043f\u0443\u0441\u043a\u0430\u0445 1.31.3 \u0438 1.30.4. \u0423\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u044c \u043f\u0440\u0438\u0441\u0443\u0442\u0441\u0442\u0432\u0443\u0435\u0442 \u0432 udev-\u043e\u0431\u0440\u0430\u0431\u043e\u0442\u0447\u0438\u043a\u0435 libinput-device-group \u0438 \u0432\u044b\u0437\u0432\u0430\u043d\u0430 \u043e\u0442\u0441\u0443\u0442\u0441\u0442\u0432\u0438\u0435\u043c \u0434\u043e\u043b\u0436\u043d\u043e\u0433\u043e […]<\/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-181898","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\udd47Sebezhet\u0151s\u00e9g a libinput-ban, amely lehet\u0151v\u00e9 teszi a rendszerben val\u00f3 jogosults\u00e1g-emel\u00e9st | ProHoster","description":"A libinput k\u00f6nyvt\u00e1rban, amely egys\u00e9ges bemeneti veremmel rendelkezik a Wayland \u00e9s az X.Org Server sz\u00e1m\u00e1ra, egy sebezhet\u0151s\u00e9get fedeztek fel (CVE-t m\u00e9g nem rendeltek hozz\u00e1), amely lehet\u0151v\u00e9 teszi, hogy a helyi felhaszn\u00e1l\u00f3 root jogosults\u00e1gokkal v\u00e9grehajtsa a k\u00f3dot.","canonical_url":"https:\/\/prohoster.info\/hu\/blog\/news\/uyazvimost-v-libinput-pozvolyayushhaya-povysit-svoi-privilegii-v-sisteme","robots":"max-image-preview:large","keywords":"","webmasterTools":{"miscellaneous":""},"schema":null,"og:locale":"hu_HU","og:site_name":"ProHoster | \u041a\u0443\u043f\u0438\u0442\u044c \u043d\u0430\u0434\u0435\u0436\u043d\u044b\u0439 \u0445\u043e\u0441\u0442\u0438\u043d\u0433 \u0434\u043b\u044f \u0441\u0430\u0439\u0442\u043e\u0432 \u0441 \u0437\u0430\u0449\u0438\u0442\u043e\u0439 \u043e\u0442 DDoS, VPS VDS \u0441\u0435\u0440\u0432\u0435\u0440\u044b","og:type":"article","og:title":"\ud83e\udd47\u0423\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u044c \u0432 libinput, \u043f\u043e\u0437\u0432\u043e\u043b\u044f\u044e\u0449\u0430\u044f \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 | ProHoster","og:description":"\u0412 \u0431\u0438\u0431\u043b\u0438\u043e\u0442\u0435\u043a\u0435 libinput, \u043f\u0440\u0435\u0434\u043e\u0441\u0442\u0430\u0432\u043b\u044f\u044e\u0449\u0435\u0439 \u0443\u043d\u0438\u0444\u0438\u0446\u0438\u0440\u043e\u0432\u0430\u043d\u043d\u044b\u0439 \u0441\u0442\u0435\u043a \u0432\u0432\u043e\u0434\u0430 \u0434\u043b\u044f Wayland \u0438 X.Org Server, \u0432\u044b\u044f\u0432\u043b\u0435\u043d\u0430 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u044c (CVE \u043d\u0435 \u043d\u0430\u0437\u043d\u0430\u0447\u0435\u043d), \u043f\u043e\u0437\u0432\u043e\u043b\u044f\u044e\u0449\u0430\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 root \u0447\u0435\u0440\u0435\u0437 \u043f\u043e\u0434\u043a\u043b\u044e\u0447\u0435\u043d\u0438\u0435 \u043b\u043e\u043a\u0430\u043b\u044c\u043d\u044b\u043c.","og:url":"https:\/\/prohoster.info\/hu\/blog\/news\/uyazvimost-v-libinput-pozvolyayushhaya-povysit-svoi-privilegii-v-sisteme","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":"2026-06-04T12:48:17+00:00","article:modified_time":"2026-06-04T12:48:17+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\/181898","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=181898"}],"version-history":[{"count":0,"href":"https:\/\/prohoster.info\/hu\/wp-json\/wp\/v2\/posts\/181898\/revisions"}],"wp:attachment":[{"href":"https:\/\/prohoster.info\/hu\/wp-json\/wp\/v2\/media?parent=181898"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/prohoster.info\/hu\/wp-json\/wp\/v2\/categories?post=181898"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/prohoster.info\/hu\/wp-json\/wp\/v2\/tags?post=181898"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}