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CVE-2024-57928

Estado: AnalizadaAlta (7.1)—

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

netfs: Fix enomem handling in buffered reads

If netfs_read_to_pagecache() gets an error from either ->prepare_read() or from netfs_prepare_read_iterator(), it needs to decrement ->nr_outstanding, cancel the subrequest and break out of the issuing loop. Currently, it only does this for two of the cases, but there are two more that aren't handled.

Fix this by moving the handling to a common place and jumping to it from all four places. This is in preference to inserting a wrapper around netfs_prepare_read_iterator() as proposed by Dmitry Antipov[1].

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.

Vulnerabilidad local (AV:L, PR:L) sin interacción que causa DoS por fallo de manejo de memoria (CWE-125: Out-of-bounds Read) en kernel Linux, permitiendo denegación de servicio.

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 ProgramFilter Network TrafficExecution PreventionApplication Isolation and SandboxingExploit ProtectionUpdate Software

Tecnologías afectadas (1)

Linux — Linux Kernel

CWE

Referencias

JSON original (NVD)

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          "attackVector": "LOCAL",
          "baseSeverity": "HIGH",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H",
          "integrityImpact": "NONE",
          "userInteraction": "NONE",
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      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnetfs: Fix enomem handling in buffered reads\n\nIf netfs_read_to_pagecache() gets an error from either ->prepare_read() or\nfrom netfs_prepare_read_iterator(), it needs to decrement ->nr_outstanding,\ncancel the subrequest and break out of the issuing loop.  Currently, it\nonly does this for two of the cases, but there are two more that aren't\nhandled.\n\nFix this by moving the handling to a common place and jumping to it from\nall four places.  This is in preference to inserting a wrapper around\nnetfs_prepare_read_iterator() as proposed by Dmitry Antipov[1]."
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      "lang": "es",
      "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: netfs: Arreglar la gestión de enomem en lecturas en búfer Si netfs_read_to_pagecache() obtiene un error de ->prepare_read() o de netfs_prepare_read_iterator(), necesita decrementar ->nr_outstanding, cancelar la subsolicitud y salir del bucle de emisión. Actualmente, solo hace esto para dos de los casos, pero hay dos más que no se gestionan. Arregle esto moviendo la gestión a un lugar común y saltando a él desde los cuatro lugares. Esto es preferible a insertar un contenedor alrededor de netfs_prepare_read_iterator() como lo propuso Dmitry Antipov[1]."
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  "lastModified": "2026-06-17T08:14:15.293",
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