{"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\/es\/blog\/news\/obnovlenie-x-org-server-21-1-23-s-ustraneniem-9-uyazvimostej","title":{"rendered":"Actualizaci\u00f3n de X.Org Server 21.1.23 que soluciona 9 vulnerabilidades","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p>Se han publicado versiones corregidas del X.Org Server 21.1.23 y del componente DDX (X Dependiente del Dispositivo) xwayland 24.1.12, que permite el inicio del X.Org Server para ejecutar aplicaciones X11 en entornos basados en Wayland. En las nuevas versiones se han corregido 9 vulnerabilidades. Algunas vulnerabilidades podr\u00edan ser potencialmente explotadas para elevar privilegios en sistemas donde el servidor X se ejecuta con derechos de root, as\u00ed como para la ejecuci\u00f3n remota de c\u00f3digo en configuraciones donde el acceso se realiza mediante el reenv\u00edo de sesiones X11 a trav\u00e9s de SSH. <\/p>\n<p>Vulnerabilidades corregidas (identificadores CVE no asignados): <\/p>\n<ul>\n<li class=\"l\"> Desbordamiento de b\u00fafer al procesar nombres de fuentes alternativos. El problema es causado por diferentes limitaciones en el tama\u00f1o del nombre de la fuente en la biblioteca libXfont2 y el servidor X \u2014 <a class=\"wpil_keyword_link\" href=\"https:\/\/prohoster.info\/es\/server\/\" title=\"servidor\" data-wpil-keyword-link=\"linked\">servidor<\/a> se asignaba 256 bytes para el nombre, mientras que la biblioteca permit\u00eda la transmisi\u00f3n de nombres de hasta 1024 bytes.\n<li class=\"l\">  Accesos a la memoria despu\u00e9s de su liberaci\u00f3n en las funciones miSyncDestroyFence(), FreeCounter() y SyncChangeCounter() debido a errores en la actualizaci\u00f3n de contadores de referencia.\n<li class=\"l\"> Desbordamiento de buffer al procesar ciertos tipos de teclas en XKB. El problema surge debido a un c\u00e1lculo incorrecto del tama\u00f1o de la tabla de c\u00f3digos de caracteres.\n<li class=\"l\"> Desbordamiento de buffer en XKB, que ocurre al procesar solicitudes SetMap debido a la falta de validaci\u00f3n adecuada del tama\u00f1o de los datos enviados por el cliente.\n<li class=\"l\"> Escritura y lectura de datos fuera de los l\u00edmites del buffer en GLX debido a una verificaci\u00f3n incorrecta del tama\u00f1o de los atributos recibidos del usuario en la funci\u00f3n ChangeDrawableAttributes.\n<li class=\"l\"> Acceso a la memoria despu\u00e9s de su liberaci\u00f3n, que ocurre al cambiar los atributos de la ventana y forzar la llamada al protector de pantalla. El problema puede llevar a la fuga de contenido de la memoria del proceso.\n<li class=\"l\"> Escritura en memoria m\u00e1s all\u00e1 del buffer asignado en funciones DRI2 DRIGetBuffers y DRIGetBuffersWithFormat, que ocurre al solicitar m\u00faltiples instancias de DRI2BufferBackLeft, pero una instancia de DRI2BufferFrontLeft.<br \/>\n<br \/>Fuente: <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 5.0.2 - aioseo.com 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