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CVE-2024-4418

Estado: AplazadaMedia (6.2)—

A race condition leading to a stack use-after-free flaw was found in libvirt. Due to a bad assumption in the virNetClientIOEventLoop() method, the `data` pointer to a stack-allocated virNetClientIOEventData structure ended up being used in the virNetClientIOEventFD callback while the data pointer's stack frame was concurrently being "freed" when returning from virNetClientIOEventLoop(). The 'virtproxyd' daemon can be used to trigger requests. If libvirt is configured with fine-grained access control, this issue, in theory, allows a user to escape their otherwise limited access. This flaw allows a local, unprivileged user to access virtproxyd without authenticating. Remote users would need to authenticate before they could access it.

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).

Tecnologías afectadas (1)

⚠ Inferidas por IA a partir de la descripción — NVD aún no ha analizado esta CVE; no son CPE verificados.

Libvirt — LibvirtAI

CWE

Referencias

JSON original (NVD)

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  "id": "CVE-2024-4418",
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          "role": "CISA Coordinator",
          "options": [
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              "exploitation": "none"
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          "version": "2.0.3",
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          "integrityImpact": "NONE",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "HIGH",
          "privilegesRequired": "NONE",
          "confidentialityImpact": "NONE"
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        "impactScore": 3.6,
        "exploitabilityScore": 2.5
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      "source": "secalert@redhat.com",
      "description": [
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          "value": "CWE-562"
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  "descriptions": [
    {
      "lang": "en",
      "value": "A race condition leading to a stack use-after-free flaw was found in libvirt. Due to a bad assumption in the virNetClientIOEventLoop() method, the `data` pointer to a stack-allocated virNetClientIOEventData structure ended up being used in the virNetClientIOEventFD callback while the data pointer's stack frame was concurrently being \"freed\" when returning from virNetClientIOEventLoop(). The 'virtproxyd' daemon can be used to trigger requests. If libvirt is configured with fine-grained access control, this issue, in theory, allows a user to escape their otherwise limited access. This flaw allows a local, unprivileged user to access virtproxyd without authenticating. Remote users would need to authenticate before they could access it."
    },
    {
      "lang": "es",
      "value": "Se encontró en libvirt una condición de ejecución que conducía a una falla de use-after-free de la pila. Debido a una mala suposición en el método virNetClientIOEventLoop(), el puntero de `datos` a una estructura virNetClientIOEventData asignada a la pila terminó usándose en la devolución de llamada de virNetClientIOEventFD mientras el marco de pila del puntero de datos se \"liberaba\" simultáneamente al regresar de virNetClientIOEventLoop() . El daemon 'virtproxyd' se puede utilizar para activar solicitudes. Si libvirt está configurado con un control de acceso detallado, este problema, en teoría, permite al usuario escapar de su acceso, que de otro modo sería limitado. Esta falla permite que un usuario local sin privilegios acceda a virtproxyd sin autenticarse. Los usuarios remotos tendrían que autenticarse antes de poder acceder a él."
    }
  ],
  "lastModified": "2026-06-17T08:01:50.457",
  "sourceIdentifier": "secalert@redhat.com"
}