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CVE-2024-41935

Estado: AnalizadaAlta (7.1)—

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

f2fs: fix to shrink read extent node in batches

We use rwlock to protect core structure data of extent tree during its shrink, however, if there is a huge number of extent nodes in extent tree, during shrink of extent tree, it may hold rwlock for a very long time, which may trigger kernel hang issue.

This patch fixes to shrink read extent node in batches, so that, critical region of the rwlock can be shrunk to avoid its extreme long time hold.

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) en kernel Linux que causa DoS por lock holder; explotación mediante escalada de privilegios de proceso local; impacto: denegación de servicio (application hang).

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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{
  "id": "CVE-2024-41935",
  "cveTags": [],
  "metrics": {
    "cvssMetricV31": [
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        "type": "Primary",
        "source": "nvd@nist.gov",
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          "version": "3.1",
          "baseScore": 7.1,
          "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",
          "attackComplexity": "LOW",
          "availabilityImpact": "HIGH",
          "privilegesRequired": "LOW",
          "confidentialityImpact": "HIGH"
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        "impactScore": 5.2,
        "exploitabilityScore": 1.8
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          "vendor": "Linux",
          "product": "Linux",
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          "programFiles": [
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  "published": "2025-01-11T13:15:21.083",
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      "tags": [
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      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
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  "vulnStatus": "Analyzed",
  "weaknesses": [
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      "source": "nvd@nist.gov",
      "description": [
        {
          "lang": "en",
          "value": "CWE-125"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nf2fs: fix to shrink read extent node in batches\n\nWe use rwlock to protect core structure data of extent tree during\nits shrink, however, if there is a huge number of extent nodes in\nextent tree, during shrink of extent tree, it may hold rwlock for\na very long time, which may trigger kernel hang issue.\n\nThis patch fixes to shrink read extent node in batches, so that,\ncritical region of the rwlock can be shrunk to avoid its extreme\nlong time hold."
    },
    {
      "lang": "es",
      "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: f2fs: corrección para reducir el nodo de extensión de lectura en lotes Usamos rwlock para proteger los datos de la estructura central del árbol de extensión durante su reducción, sin embargo, si hay una gran cantidad de nodos de extensión en el árbol de extensión, durante la reducción del árbol de extensión, puede mantener rwlock durante mucho tiempo, lo que puede desencadenar un problema de bloqueo del kernel. Este parche corrige la reducción del nodo de extensión de lectura en lotes, de modo que la región crítica de rwlock se pueda reducir para evitar su retención de tiempo extremadamente largo."
    }
  ],
  "lastModified": "2026-06-17T07:48:28.920",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
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              "matchCriteriaId": "2B308624-8B2B-43C9-9186-5B0A7DF91D3B",
              "versionEndExcluding": "6.6.66",
              "versionStartIncluding": "3.8"
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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              "versionEndExcluding": "6.12.5",
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          "operator": "OR"
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  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
}