CVE-2025-0689
Full vulnerability record from the local CVENow database.
Description
When reading data from disk, the grub's UDF filesystem module utilizes the user controlled data length metadata to allocate its internal buffers. In certain scenarios, while iterating through disk sectors, it assumes the read size from the disk is always smaller than the allocated buffer size which is not guaranteed. A crafted filesystem image may lead to a heap-based buffer overflow resulting in critical data to be corrupted, resulting in the risk of arbitrary code execution by-passing secure boot protections.
Severity
HIGH
CVSS score
7.8
(v3.1)
Vulnerability status
Modified
Source identifier
Published
2025-03-03 15:15:16.147000
Last modified
2026-10-21 17:17:27.783000
View original CVE JSON
{
"id": "CVE-2025-0689",
"sourceIdentifier": "[email protected]",
"published": "2025-03-03T15:15:16.147",
"lastModified": "2026-10-21T17:17:27.783",
"vulnStatus": "Modified",
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"value": "When reading data from disk, the grub's UDF filesystem module utilizes the user controlled data length metadata to allocate its internal buffers. In certain scenarios, while iterating through disk sectors, it assumes the read size from the disk is always smaller than the allocated buffer size which is not guaranteed. A crafted filesystem image may lead to a heap-based buffer overflow resulting in critical data to be corrupted, resulting in the risk of arbitrary code execution by-passing secure boot protections."
},
{
"lang": "es",
"value": "Al leer datos del disco, el módulo de sistema de archivos UDF de grub utiliza los metadatos de longitud de datos controlados por el usuario para asignar sus búferes internos. En ciertos escenarios, al iterar a través de los sectores del disco, asume que el tamaño de lectura del disco siempre es menor que el tamaño de búfer asignado, lo que no está garantizado. Una imagen de sistema de archivos manipulado puede provocar un desbordamiento de búfer basado en el montón que da como resultado la corrupción de datos críticos, lo que genera el riesgo de ejecución de código arbitrario que pasa por alto las protecciones de arranque seguro."
}
],
"affected": [
{
"source": "[email protected]",
"affectedData": [
{
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"collectionURL": "https://www.gnu.org/software/grub/",
"packageName": "grub2",
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"type": "Secondary",
"description": [
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"source": "[email protected]",
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}