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CVE-2022-50192

Estado: AnalizadaAlta (7.8)—

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.

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).

🎯 Técnicas ATT&CK

Cómo se explota esta vulnerabilidad y qué consigue el atacante, en el lenguaje de MITRE ATT&CK.

Vulnerabilidad local (AV:L, PR:L) sin interacción de usuario que causa use-after-free (CWE-416) en tegra20-slink permitiendo ejecución de código con privilegios elevados en el kernel Linux.

Inferido por nuestro agente de análisis a partir de la descripción oficial, el vector CVSS y la CWE, y comprobado por un supervisor. Puede contener errores.

🛡️ Mitigaciones ATT&CK que cubren estas técnicas

Execution PreventionThreat Intelligence ProgramRestrict Web-Based ContentPrivileged Account ManagementLimit Software InstallationBehavior Prevention on Endpoint

Tecnologías afectadas (1)

Linux — Linux Kernel

CWE

Referencias

JSON original (NVD)

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  "published": "2025-06-18T11:15:49.810",
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      "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'tspi'. 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: corrección 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 también se liberan, por lo que se generará un UAF al usar 'tspi'. Para solucionar esto, obtenga el master antes de anular el registro y colóquelo al finalizar su uso."
    }
  ],
  "lastModified": "2026-06-17T05:22:56.757",
  "configurations": [
    {
      "nodes": [
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