{
  "id": "CVE-2021-47055",
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "published": "2024-02-29T23:15:07.473",
  "lastModified": "2025-01-09T15:34:43.780",
  "vulnStatus": "Analyzed",
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nmtd: require write permissions for locking and badblock ioctls\n\nMEMLOCK, MEMUNLOCK and OTPLOCK modify protection bits. Thus require\nwrite permission. Depending on the hardware MEMLOCK might even be\nwrite-once, e.g. for SPI-NOR flashes with their WP# tied to GND. OTPLOCK\nis always write-once.\n\nMEMSETBADBLOCK modifies the bad block table."
    },
    {
      "lang": "es",
      "value": "En el kernel de Linux se ha solucionado la siguiente vulnerabilidad: mtd: requiere permisos de escritura para bloqueo y badblock ioctls MEMLOCK, MEMUNLOCK y OTPLOCK modifican los bits de protecci\u00f3n. Por lo tanto, requiere permiso de escritura. Dependiendo del hardware, MEMLOCK podr\u00eda incluso ser de escritura \u00fanica, por ejemplo, para flashes SPI-NOR con su WP# vinculado a GND. OTPLOCK siempre se escribe una vez. MEMSETBADBLOCK modifica la tabla de bloques defectuosos."
    }
  ],
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          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
          "baseScore": 5.5,
          "baseSeverity": "MEDIUM",
          "attackVector": "LOCAL",
          "attackComplexity": "LOW",
          "privilegesRequired": "LOW",
          "userInteraction": "NONE",
          "scope": "UNCHANGED",
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "availabilityImpact": "HIGH"
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        "exploitabilityScore": 1.8,
        "impactScore": 3.6
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