{"id":181859,"date":"2026-06-02T14:48:28","date_gmt":"2026-06-02T12:48:28","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/obnovlenie-x-org-server-21-1-23-s-ustraneniem-9-uyazvimostej"},"modified":"2026-06-02T14:48:28","modified_gmt":"2026-06-02T12:48:28","slug":"obnovlenie-x-org-server-21-1-23-s-ustraneniem-9-uyazvimostej","status":"publish","type":"post","link":"https:\/\/prohoster.info\/hr\/blog\/news\/obnovlenie-x-org-server-21-1-23-s-ustraneniem-9-uyazvimostej","title":{"rendered":"A\u017euriranje X.Org Servera 21.1.23 koje ispravlja 9 ranjivosti","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p>Objavljene su ispravke za X.Org Server 21.1.23 i DDX komponentu (Device-Dependent X) xwayland 24.1.12, koja omogu\u0107ava pokretanje X.Org Servera za izvr\u0161avanje X11 aplikacija u okru\u017eenjima temeljenim na Waylandu. U novim verzijama ispravljene su 9 ranjivosti. Neke od ranjivosti se potencijalno mogu iskoristiti za eskalaciju privilegija u sustavima gdje X server radi s root pravima, kao i za daljinsko izvr\u0161avanje koda u konfiguracijama gdje se koristi preusmjeravanje sesije X11 putem SSH. <\/p>\n<p>Ispravljene ranjivosti (CVE identifikatori nisu dodijeljeni): <\/p>\n<ul>\n<li class=\"l\"> Prelijevanje bafera tijekom obrade alternativnih imena fontova. Problem je uzrokovan razli\u010ditim ograni\u010denjima veli\u010dine imena fonta u biblioteci libXfont2 i X-poslu\u017eitelju \u2014 <a class=\"wpil_keyword_link\" href=\"https:\/\/prohoster.info\/hr\/server\/\" title=\"server\" data-wpil-keyword-link=\"linked\">server<\/a> rezervira se 256 bajtova za ime, dok biblioteka dopu\u0161ta prijenos imena veli\u010dine do 1024 bajta.\n<li class=\"l\">  Pristupi memoriji nakon njezinog osloba\u0111anja u funkcijama miSyncDestroyFence(), FreeCounter() i SyncChangeCounter() zbog gre\u0161aka u a\u017euriranju broja\u010da referenci.\n<li class=\"l\"> Prelivanje bafera prilikom obrade odre\u0111enih tipova tipki u XKB. Problem nastaje zbog neta\u010dnog izra\u010duna veli\u010dine tablice kodova znakova.\n<li class=\"l\"> Prelivanje bafera u XKB-u koje se javlja prilikom obrade zahtjeva SetMap zbog nedostatka odgovaraju\u0107e provjere veli\u010dine podataka poslanih od strane klijenta.\n<li class=\"l\"> Pisanje i \u010ditanje podataka izvan granica bafera u GLX-u zbog neta\u010dne provjere veli\u010dine atributa koji se primaju od korisnika u funkciji ChangeDrawableAttributes.\n<li class=\"l\"> Pristup memoriji nakon oslobo\u0111enja, koji se javlja nakon promjene atributa prozora i prisilnog pozivanja \u010duvara ekrana. Problem mo\u017ee uzrokovati curenje sadr\u017eaja iz memorije procesa.\n<li class=\"l\"> Pisanje u memoriju izvan dodijeljenog bafera u DRI2 funkcijama DRIGetBuffers i DRIGetBuffersWithFormat, koje occuriraju prilikom zahtjeva za vi\u0161estrukim instancama DRI2BufferBackLeft, ali samo jednom instancom DRI2BufferFrontLeft.<br \/>\n<br \/>Izvor: <a rel=\"nofollow\" href=\"https:\/\/www.opennet.ru\/opennews\/art.shtml?num=65600\">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 21.1.23 \u0438 DDX-\u043a\u043e\u043c\u043f\u043e\u043d\u0435\u043d\u0442\u0430 (Device-Dependent X) xwayland 24.1.12, \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 9 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0435\u0439. \u041d\u0435\u043a\u043e\u0442\u043e\u0440\u044b\u0435 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0438 \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 [&hellip;]<\/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-181859","post","type-post","status-publish","format-standard","hentry","category-news"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 5.0.4 - aioseo.com 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