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CVE-2020-14390

Estado: ModificadaMedia (5.6)—

Se encontró un fallo en el kernel de Linux en las versiones anteriores a 5.9-rc6. Cuando se cambia el tamaño de la pantalla, puede ocurrir una escritura de memoria fuera de límites conllevando a una corrupción de la memoria o una denegación de servicio.La mayor amenaza de esta vulnerabilidad es la disponibilidad del sistema. Debido a la naturaleza del fallo, la escalada de privilegios no puede ser totalmente descartada

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 (2)

Debian — Debian LinuxLinux — Linux Kernel

CWE

Referencias

JSON original (NVD)

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              "technicalImpact": "partial"
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          "version": "2.0.3",
          "timestamp": "2026-10-08T20:56:34.546188Z"
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          "vectorString": "AV:L/AC:L/Au:N/C:P/I:P/A:P",
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          "integrityImpact": "PARTIAL",
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          "availabilityImpact": "PARTIAL",
          "confidentialityImpact": "PARTIAL"
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        "impactScore": 6.4,
        "baseSeverity": "MEDIUM",
        "obtainAllPrivilege": false,
        "exploitabilityScore": 3.9,
        "obtainUserPrivilege": false,
        "obtainOtherPrivilege": false,
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          "vendor": "n/a",
          "product": "kernel",
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  "published": "2020-09-18T18:15:16.503",
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      "source": "secalert@redhat.com"
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      "source": "secalert@redhat.com"
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      "source": "secalert@redhat.com"
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  ],
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "type": "Secondary",
      "source": "secalert@redhat.com",
      "description": [
        {
          "lang": "en",
          "value": "CWE-787"
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      ]
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      "value": "A flaw was found in the Linux kernel in versions before 5.9-rc6. When changing screen size, an out-of-bounds memory write can occur leading to memory corruption or a denial of service. Due to the nature of the flaw, privilege escalation cannot be fully ruled out."
    },
    {
      "lang": "es",
      "value": "Se encontró un fallo en el kernel de Linux en las versiones anteriores a 5.9-rc6. Cuando se cambia el tamaño de la pantalla, puede ocurrir una escritura de memoria fuera de límites conllevando a una corrupción de la memoria o una denegación de servicio.La mayor amenaza de esta vulnerabilidad es la disponibilidad del sistema. Debido a la naturaleza del fallo, la escalada de privilegios no puede ser totalmente descartada"
    }
  ],
  "lastModified": "2026-10-08T21:17:23.590",
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