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CVE-2025-38648

Estado: AnalizadaMedia (5.5)—

In the Linux kernel, the following vulnerability has been resolved:

spi: stm32: Check for cfg availability in stm32_spi_probe

The stm32_spi_probe function now includes a check to ensure that the pointer returned by of_device_get_match_data is not NULL before accessing its members. This resolves a warning where a potential NULL pointer dereference could occur when accessing cfg->has_device_mode.

Before accessing the 'has_device_mode' member, we verify that 'cfg' is not NULL. If 'cfg' is NULL, an error message is logged.

This change ensures that the driver does not attempt to access configuration data if it is not available, thus preventing a potential system crash due to a NULL pointer dereference.

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 (1)

Linux — Linux Kernel

CWE

Referencias

JSON original (NVD)

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  "id": "CVE-2025-38648",
  "cveTags": [],
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        "source": "nvd@nist.gov",
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          "version": "3.1",
          "baseScore": 5.5,
          "attackVector": "LOCAL",
          "baseSeverity": "MEDIUM",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
          "integrityImpact": "NONE",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "HIGH",
          "privilegesRequired": "LOW",
          "confidentialityImpact": "NONE"
        },
        "impactScore": 3.6,
        "exploitabilityScore": 1.8
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  "published": "2025-08-22T16:15:39.480",
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          "value": "CWE-476"
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    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nspi: stm32: Check for cfg availability in stm32_spi_probe\n\nThe stm32_spi_probe function now includes a check to ensure that the\npointer returned by of_device_get_match_data is not NULL before\naccessing its members. This resolves a warning where a potential NULL\npointer dereference could occur when accessing cfg->has_device_mode.\n\nBefore accessing the 'has_device_mode' member, we verify that 'cfg' is\nnot NULL. If 'cfg' is NULL, an error message is logged.\n\nThis change ensures that the driver does not attempt to access\nconfiguration data if it is not available, thus preventing a potential\nsystem crash due to a NULL pointer dereference."
    },
    {
      "lang": "es",
      "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: spi: stm32: Comprobar la disponibilidad de cfg en stm32_spi_probe La función stm32_spi_probe ahora incluye una comprobación para garantizar que el puntero devuelto por of_device_get_match_data no sea NULL antes de acceder a sus miembros. Esto resuelve una advertencia donde podría ocurrir una posible desreferencia de puntero NULL al acceder a cfg->has_device_mode. Antes de acceder al miembro 'has_device_mode', verificamos que 'cfg' no sea NULL. Si 'cfg' es NULL, se registra un mensaje de error. Este cambio garantiza que el controlador no intente acceder a los datos de configuración si no están disponibles, previniendo así un posible fallo del sistema debido a una desreferencia de puntero NULL."
    }
  ],
  "lastModified": "2026-06-17T09:17:17.967",
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