{"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\/it\/blog\/news\/obnovlenie-x-org-server-21-1-23-s-ustraneniem-9-uyazvimostej","title":{"rendered":"Aggiornamento di X.Org Server 21.1.23 con la correzione di 9 vulnerabilit\u00e0","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p>Sono stati pubblicati aggiornamenti correttivi per X.Org Server 21.1.23 e per il componente DDX (Device-Dependent X) xwayland 24.1.12, che consente l'esecuzione di X.Org Server per gestire le applicazioni X11 in ambienti basati su Wayland. Nelle nuove versioni sono state risolte 9 vulnerabilit\u00e0. Alcune di queste vulnerabilit\u00e0 possono potenzialmente essere sfruttate per aumentare i privilegi nei sistemi in cui il server X viene eseguito con i diritti di root, nonch\u00e9 per l'esecuzione remota di codice in configurazioni in cui l'accesso avviene tramite il reindirizzamento della sessione X11 mediante SSH. <\/p>\n<p>Vulnerabilit\u00e0 corrette (CVE identificatori non assegnati): <\/p>\n<ul>\n<li class=\"l\"> Overflow del buffer durante l'elaborazione dei nomi alternativi dei font. Il problema \u00e8 causato da diverse limitazioni sulla dimensione del nome del font nella libreria libXfont2 e nel server X \u2014 <a class=\"wpil_keyword_link\" href=\"https:\/\/prohoster.info\/it\/server\/\" title=\"un server\" data-wpil-keyword-link=\"linked\">un server<\/a> veniva allocato uno spazio di 256 byte per il nome, mentre la libreria consentiva la trasmissione di nomi fino a 1024 byte.\n<li class=\"l\">  Accesso alla memoria dopo il rilascio nelle funzioni miSyncDestroyFence(), FreeCounter() e SyncChangeCounter() a causa di errori nell'aggiornamento dei contatori di riferimento.\n<li class=\"l\"> Buffer overflow durante l'elaborazione di determinati tipi di tasti in XKB. Il problema si verifica a causa di un calcolo errato della dimensione della tabella dei codici dei caratteri.\n<li class=\"l\"> Overflow del buffer in XKB, che si verifica durante l'elaborazione delle richieste SetMap a causa della mancanza di un'adeguata verifica della dimensione dei dati inviati dal cliente.\n<li class=\"l\"> Scrittura e lettura di dati al di fuori dei limiti del buffer in GLX a causa di un controllo errato della dimensione degli attributi ricevuti dall'utente nella funzione ChangeDrawableAttributes.\n<li class=\"l\"> Accesso alla memoria dopo la sua liberazione, che si verifica dopo la modifica degli attributi della finestra e la chiamata forzata del salvaschermo. Il problema pu\u00f2 portare a perdite di contenuto dalla memoria del processo.\n<li class=\"l\"> Scrittura in memoria al di fuori del buffer allocato nelle funzioni DRI2 DRIGetBuffers e DRIGetBuffersWithFormat, che si verifica quando viene richiesta pi\u00f9 di un'istanza di DRI2BufferBackLeft, ma una sola istanza di DRI2BufferFrontLeft.<br \/>\n<br \/>Fonte: <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 5.0.0.1 - aioseo.com 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