{"id":94301,"date":"2020-09-15T13:42:05","date_gmt":"2020-09-15T11:42:05","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/v-yadre-linux-iz-tekstovoj-konsoli-udalili-podderzhku-prokrutki-teksta"},"modified":"2020-09-15T13:42:05","modified_gmt":"2020-09-15T11:42:05","slug":"v-yadre-linux-iz-tekstovoj-konsoli-udalili-podderzhku-prokrutki-teksta","status":"publish","type":"post","link":"https:\/\/prohoster.info\/es\/blog\/news\/v-yadre-linux-iz-tekstovoj-konsoli-udalili-podderzhku-prokrutki-teksta","title":{"rendered":"Se elimin\u00f3 el soporte para el desplazamiento de texto en el n\u00facleo de Linux desde la consola de texto.","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

De la implementaci\u00f3n de la consola de texto incluida en el n\u00facleo de Linux que proporcionaba la posibilidad de desplazamiento program\u00e1tico del texto hacia atr\u00e1s (CONFIG_VGACON_SOFT_SCROLLBACK) m\u00e1s all\u00e1 de la memoria de video del modo de texto VGA.<\/a><\/noindex>, que permite desplazar el texto hacia atr\u00e1s (CONFIG_VGACON_SOFT_SCROLLBACK). El c\u00f3digo fue eliminado debido a errores que no fueron corregidos por la falta de un mantenedor que supervisara el desarrollo de vgacon.<\/p>\n

En verano se identific\u00f3 en vgacon se solucion\u00f3<\/a><\/noindex> una vulnerabilidad (CVE-2020-14331) que puede provocar un desbordamiento de b\u00fafer debido a la falta de comprobaciones adecuadas de la memoria disponible en el b\u00fafer de desplazamiento. La vulnerabilidad llam\u00f3 la atenci\u00f3n de los desarrolladores, que organizaron pruebas de fuzzing en el c\u00f3digo de vgacon en y el analizador<\/a><\/noindex>.<\/p>\n

Comprobaciones adicionales revelaron algunos problemas similares en el c\u00f3digo de vgacon, as\u00ed como problemas en la implementaci\u00f3n del desplazamiento en el controlador fbcon. Desafortunadamente, el c\u00f3digo problem\u00e1tico ha estado sin mantenimiento durante mucho tiempo, probablemente porque los desarrolladores han cambiado al uso de consolas gr\u00e1ficas y las consolas de texto han ca\u00eddo en desuso (la gente sigue utilizando las consolas vgacon y fbcon, pero desde hace d\u00e9cadas ya no son la interfaz principal del n\u00facleo y caracter\u00edsticas avanzadas como el desplazamiento integrado en el controlador (Shift+PageUp\/PageDown) probablemente son poco solicitadas). <\/p>\n

Por lo tanto, Linus Torvalds decidi\u00f3 no intentar mantener un c\u00f3digo no demandado, sino simplemente eliminarlo. Si hay usuarios que consideren necesaria esta funcionalidad, el c\u00f3digo para soportar el desplazamiento en la consola ser\u00e1 devuelto al n\u00facleo tan pronto como se encuentre un mantenedor dispuesto a asumir su mantenimiento.<\/p>\n

<\/a><\/noindex><\/p>\n

Fuente: opennet.ru<\/a><\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"

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