fkie_cve-2022-50192
Vulnerability from fkie_nvd
Published
2025-06-18 11:15
Modified
2025-06-18 13:47
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved: spi: tegra20-slink: fix UAF in tegra_slink_remove() After calling spi_unregister_master(), the refcount of master will be decrease to 0, and it will be freed in spi_controller_release(), the device data also will be freed, so it will lead a UAF when using 'tspi'. To fix this, get the master before unregister and put it when finish using it.
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/415b4ce61308f24583912d887772dfcbf97f1d20
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/67f77172644260482fdafc03b6025847944701e5
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/7e9984d183bb1e99e766c5c2b950ff21f7f7b6c0
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/800c7767e05d29656713e04532823a752e57e037
Impacted products
Vendor Product Version


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{
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nspi: tegra20-slink: fix UAF in tegra_slink_remove()\n\nAfter calling spi_unregister_master(), the refcount of master will\nbe decrease to 0, and it will be freed in spi_controller_release(),\nthe device data also will be freed, so it will lead a UAF when using\n\u0027tspi\u0027. To fix this, get the master before unregister and put it when\nfinish using it."
    },
    {
      "lang": "es",
      "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: spi: tegra20-slink: correcci\u00f3n del UAF en tegra_slink_remove(). Tras llamar a spi_unregister_master(), el recuento de referencias del master se reduce a 0 y se libera en spi_controller_release(). Los datos del dispositivo tambi\u00e9n se liberan, por lo que se generar\u00e1 un UAF al usar \u0027tspi\u0027. Para solucionar esto, obtenga el master antes de anular el registro y col\u00f3quelo al finalizar su uso."
    }
  ],
  "id": "CVE-2022-50192",
  "lastModified": "2025-06-18T13:47:40.833",
  "metrics": {},
  "published": "2025-06-18T11:15:49.810",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/415b4ce61308f24583912d887772dfcbf97f1d20"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/67f77172644260482fdafc03b6025847944701e5"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/7e9984d183bb1e99e766c5c2b950ff21f7f7b6c0"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/800c7767e05d29656713e04532823a752e57e037"
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Awaiting Analysis"
}


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