{
  "id": "CVE-2021-3492",
  "sourceIdentifier": "security@ubuntu.com",
  "published": "2021-04-17T05:15:13.113",
  "lastModified": "2021-05-21T16:08:32.527",
  "vulnStatus": "Analyzed",
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      "lang": "en",
      "value": "Shiftfs, an out-of-tree stacking file system included in Ubuntu Linux kernels, did not properly handle faults occurring during copy_from_user() correctly. These could lead to either a double-free situation or memory not being freed at all. An attacker could use this to cause a denial of service (kernel memory exhaustion) or gain privileges via executing arbitrary code. AKA ZDI-CAN-13562."
    },
    {
      "lang": "es",
      "value": "Shiftfs, un sistema de archivos de apilamiento fuera del \u00e1rbol incluido en los kernels de Ubuntu Linux, no manejaba apropiadamente los fallos que ocurr\u00edan durante la funci\u00f3n copy_from_user(). Esto podr\u00eda conllevar a una situaci\u00f3n de doble liberaci\u00f3n o a que la memoria no sea liberada del todo. Un atacante podr\u00eda usar esto para causar una denegaci\u00f3n de servicio (agotamiento de la memoria del kernel) u alcanzar privilegios por medio de la ejecuci\u00f3n de c\u00f3digo arbitrario. Tambi\u00e9n se conoce como ZDI-CAN-13562"
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