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CVE-2024-53147

Estado: ModificadaAlta (7.1)—

In the Linux kernel, the following vulnerability has been resolved:

exfat: fix out-of-bounds access of directory entries

In the case of the directory size is greater than or equal to the cluster size, if start_clu becomes an EOF cluster(an invalid cluster) due to file system corruption, then the directory entry where ei->hint_femp.eidx hint is outside the directory, resulting in an out-of-bounds access, which may cause further file system corruption.

This commit adds a check for start_clu, if it is an invalid cluster, the file or directory will be treated as empty.

CVSS

Probabilidad de explotación (EPSS)

EPSS (Exploit Prediction Scoring System, de FIRST) estima la probabilidad de que una vulnerabilidad sea explotada en 30 días. Complementa a CVSS (impacto) y a CISA KEV (explotación confirmada).

🎯 Técnicas ATT&CK

Cómo se explota esta vulnerabilidad y qué consigue el atacante, en el lenguaje de MITRE ATT&CK.

Acceso local (AV:L) sin interacción (UI:N) con privilegios (PR:L) permite escalar o manipular el sistema de archivos; corrupción de datos de directorio exfat por acceso fuera de límites.

Inferido por nuestro agente de análisis a partir de la descripción oficial, el vector CVSS y la CWE, y comprobado por un supervisor. Puede contener errores.

🛡️ Mitigaciones ATT&CK que cubren estas técnicas

Threat Intelligence ProgramRestrict File and Directory PermissionsRemote Data StorageNetwork SegmentationFilter Network TrafficExecution Prevention

Tecnologías afectadas (1)

Linux — Linux Kernel

CWE

Referencias

JSON original (NVD)

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      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nexfat: fix out-of-bounds access of directory entries\n\nIn the case of the directory size is greater than or equal to\nthe cluster size, if start_clu becomes an EOF cluster(an invalid\ncluster) due to file system corruption, then the directory entry\nwhere ei->hint_femp.eidx hint is outside the directory, resulting\nin an out-of-bounds access, which may cause further file system\ncorruption.\n\nThis commit adds a check for start_clu, if it is an invalid cluster,\nthe file or directory will be treated as empty."
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      "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: exfat: corrige el acceso fuera de los límites de las entradas del directorio. En el caso de que el tamaño del directorio sea mayor o igual al tamaño del clúster, si start_clu se convierte en un clúster EOF (un clúster no válido cluster) debido a una corrupción del sistema de archivos, entonces la entrada del directorio donde ei->hint_femp.eidx sugerencia está fuera del directorio, lo que resulta en un acceso fuera de los límites, lo que puede causar una mayor corrupción del sistema de archivos. Este commit agrega una verificación de start_clu; si es un clúster no válido, el archivo o directorio se tratará como vacío."
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  "lastModified": "2026-08-04T11:21:58.560",
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