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The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability."},{"lang":"es","value":"Se encontró un fallo en grub2 en versiones anteriores a 2.06. Los nombres de las variables presentes se expanden en la línea de comando proporcionada en sus correspondientes contenidos de variables, usando un búfer de la pila de 1kB para el almacenamiento temporal, sin una comprobación suficiente de límites. Si la función es llamada con una línea de comando que hace referencia a una variable con una carga útil suficientemente grande, es posible desbordar el búfer de la pila, corromper la trama de la pila y controlar una ejecución, lo que también podría omitir las protecciones de Secure Boot. La mayor amenaza de esta vulnerabilidad es la confidencialidad e integridad de los datos, así como la disponibilidad del 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