{"id":182538,"date":"2026-07-08T10:54:06","date_gmt":"2026-07-08T08:54:06","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/obnovlenie-x-org-server-21-1-24-xwayland-24-1-13-i-libxfont2-2-0-8-s-ustraneniem-uyazvimostej"},"modified":"2026-07-08T10:54:06","modified_gmt":"2026-07-08T08:54:06","slug":"obnovlenie-x-org-server-21-1-24-xwayland-24-1-13-i-libxfont2-2-0-8-s-ustraneniem-uyazvimostej","status":"publish","type":"post","link":"https:\/\/prohoster.info\/hu\/blog\/news\/obnovlenie-x-org-server-21-1-24-xwayland-24-1-13-i-libxfont2-2-0-8-s-ustraneniem-uyazvimostej","title":{"rendered":"X.Org Server 21.1.24, xwayland 24.1.13 \u00e9s libXfont2 2.0.8 friss\u00edt\u00e9se sebezhet\u0151s\u00e9gek jav\u00edt\u00e1s\u00e1val.","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p>Kiad\u00e1sra ker\u00fcltek a X.Org Server 21.1.24 \u00e9s az xwayland 24.1.13 DDX komponens jav\u00edt\u00f3 kiad\u00e1sai, amely lehet\u0151v\u00e9 teszi az X.Org Server futtat\u00e1s\u00e1t a X11 alkalmaz\u00e1sok Wayland alap\u00fa k\u00f6rnyezetekben t\u00f6rt\u00e9n\u0151 v\u00e9grehajt\u00e1s\u00e1hoz. Az \u00faj verzi\u00f3kban 2 sebezhet\u0151s\u00e9get jav\u00edtottak, amelyek potenci\u00e1lisan kihaszn\u00e1lhat\u00f3k lehetnek a rendszerek privil\u00e9giumainak emel\u00e9s\u00e9re, ahol az X szerver root jogosults\u00e1gokkal fut, valamint t\u00e1voli k\u00f3dv\u00e9grehajt\u00e1sra olyan konfigur\u00e1ci\u00f3kban, ahol az SSH szekci\u00f3ir\u00e1ny\u00edt\u00e1son kereszt\u00fcl f\u00e9rnek hozz\u00e1.       <\/p>\n<p>Jav\u00edtott sebezhet\u0151s\u00e9gek:   <\/p>\n<ul>\n<li class=\"l\"> CVE-2026-55999 \u2014 Buffert\u00fal folyamat a 2D-gyors\u00edt\u00e1si Glamor architekt\u00far\u00e1ban, amely a glamor_font_get() funkci\u00f3t \u00e9rinti, ami a bet\u0171t\u00edpus text\u00fara atlasz\u00e1nak l\u00e9trehoz\u00e1s\u00e1\u00e9rt felel\u0151s az egyes glifek \u00e1ltal\u00e1nos buffereken kereszt\u00fcli kirajzol\u00e1sa r\u00e9v\u00e9n. A probl\u00e9ma abb\u00f3l ad\u00f3dik, hogy a buffer m\u00e9ret\u00e9t a bet\u0171t\u00edpusban megadott param\u00e9terek alapj\u00e1n hat\u00e1rozt\u00e1k meg, mik\u00f6zben a bufferbe m\u00e1solt adatok l\u00e9trehoz\u00e1sakor a glifek egyedi metrik\u00e1it haszn\u00e1lt\u00e1k. A sebezhet\u0151s\u00e9g kihaszn\u00e1l\u00e1s\u00e1hoz a t\u00e1mad\u00f3 el\u0151k\u00e9sz\u00edthet egy speci\u00e1lisan megform\u00e1zott PCF f\u00e1jlt, amelyben hib\u00e1s glifametrik\u00e1k szerepelnek, amelyek t\u00fall\u00e9pik a sz\u00e1mukra kijel\u00f6lt mem\u00f3riater\u00fclet m\u00e9ret\u00e9t. A t\u00falt\u00f6lt\u00e9s olyan rendszereken l\u00e9p fel, amelyek a glamor h\u00e1tt\u00e9rmotort haszn\u00e1lj\u00e1k (Xorg modesetting meghajt\u00f3val \u00e9s Xwayland), amikor probl\u00e9m\u00e1s bet\u0171t\u00edpust rajzolnak ki.\n<li class=\"l\"> CVE-2026-56000 \u2014 Mem\u00f3riac\u00edmz\u00e9s a felszabad\u00edt\u00e1s ut\u00e1n a CommonMakeCurrent() funkci\u00f3ban a GLX contextTags feldolgoz\u00e1sa sor\u00e1n. A probl\u00e9ma abb\u00f3l ad\u00f3dik, hogy a realloc() funkci\u00f3 haszn\u00e1latakor a cl-&gt;contextTags t\u00f6mb adatainak hely\u00e9t \u00e1thelyezt\u00e9k egy \u00faj bufferbe, de a r\u00e9gi bufferra mutat\u00f3 mutat\u00f3 a haszn\u00e1latban maradt. A buffer \u00e1thelyez\u00e9s\u00e9nek kezdem\u00e9nyez\u00e9s\u00e9hez az \u00fcgyf\u00e9l elfoglalhatta az \u00f6sszes GLX-kont\u00e9k sz\u00e1m\u00e1ra el\u0151ir\u00e1nyzott elemet a t\u00f6mbben, majd \u00fajabb tov\u00e1bbi kontextust hozhatott l\u00e9tre.       <\/ul>\n<p>Ezen k\u00edv\u00fcl megeml\u00edt\u00e9sre ker\u00fclt a libXfont 2.0.8 k\u00f6nyvt\u00e1r kiad\u00e1sa, amely az X szerverben haszn\u00e1lt. A friss\u00edt\u00e9s sor\u00e1n 3 sebezhet\u0151s\u00e9get (CVE-2026-56001, CVE-2026-56002, CVE-2026-56003) jav\u00edtottak, amelyek puffert\u00falcsordul\u00e1st okoznak a speci\u00e1lisan elk\u00e9sz\u00edtett PCF form\u00e1tum\u00fa bet\u0171t\u00edpusok elemz\u00e9se sor\u00e1n.<br \/>\n<br \/>Forr\u00e1s: <a content=\"nofollow\" rel=\"nofollow\" href=\"https:\/\/www.opennet.ru\/opennews\/art.shtml?num=65863\">opennet.ru<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"<p>\u041e\u043f\u0443\u0431\u043b\u0438\u043a\u043e\u0432\u0430\u043d\u044b \u043a\u043e\u0440\u0440\u0435\u043a\u0442\u0438\u0440\u0443\u044e\u0449\u0438\u0435 \u0432\u044b\u043f\u0443\u0441\u043a\u0438 X.Org Server 21.1.24 \u0438 DDX-\u043a\u043e\u043c\u043f\u043e\u043d\u0435\u043d\u0442\u0430 (Device-Dependent X) xwayland 24.1.13, \u043e\u0431\u0435\u0441\u043f\u0435\u0447\u0438\u0432\u0430\u044e\u0449\u0435\u0433\u043e \u0437\u0430\u043f\u0443\u0441\u043a X.Org Server \u0434\u043b\u044f \u043e\u0440\u0433\u0430\u043d\u0438\u0437\u0430\u0446\u0438\u0438 \u0432\u044b\u043f\u043e\u043b\u043d\u0435\u043d\u0438\u044f X11-\u043f\u0440\u0438\u043b\u043e\u0436\u0435\u043d\u0438\u0439 \u0432 \u043e\u043a\u0440\u0443\u0436\u0435\u043d\u0438\u044f\u0445 \u043d\u0430 \u0431\u0430\u0437\u0435 Wayland. \u0412 \u043d\u043e\u0432\u044b\u0445 \u0432\u0435\u0440\u0441\u0438\u044f\u0445 \u0443\u0441\u0442\u0440\u0430\u043d\u0435\u043d\u044b 2 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0438, \u043a\u043e\u0442\u043e\u0440\u044b\u0435 \u043f\u043e\u0442\u0435\u043d\u0446\u0438\u0430\u043b\u044c\u043d\u043e \u043c\u043e\u0433\u0443\u0442 \u0431\u044b\u0442\u044c \u044d\u043a\u0441\u043f\u043b\u0443\u0430\u0442\u0438\u0440\u043e\u0432\u0430\u043d\u044b \u0434\u043b\u044f \u043f\u043e\u0432\u044b\u0448\u0435\u043d\u0438\u044f \u043f\u0440\u0438\u0432\u0438\u043b\u0435\u0433\u0438\u0439 \u0432 \u0441\u0438\u0441\u0442\u0435\u043c\u0430\u0445, \u0432 \u043a\u043e\u0442\u043e\u0440\u044b\u0445 X-\u0441\u0435\u0440\u0432\u0435\u0440 \u0432\u044b\u043f\u043e\u043b\u043d\u044f\u0435\u0442\u0441\u044f \u0441 \u043f\u0440\u0430\u0432\u0430\u043c\u0438 root, \u0430 \u0442\u0430\u043a\u0436\u0435 \u0434\u043b\u044f \u0443\u0434\u0430\u043b\u0451\u043d\u043d\u043e\u0433\u043e \u0432\u044b\u043f\u043e\u043b\u043d\u0435\u043d\u0438\u044f \u043a\u043e\u0434\u0430 \u0432 [&hellip;]<\/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-182538","post","type-post","status-publish","format-standard","hentry","category-news"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 5.0.3 - aioseo.com -->\n\t<meta name=\"description\" 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