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CVE-2026-23137

Estado: ModificadaMedia (5.5)—

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

of: unittest: Fix memory leak in unittest_data_add()

In unittest_data_add(), if of_resolve_phandles() fails, the allocated unittest_data is not freed, leading to a memory leak.

Fix this by using scope-based cleanup helper __free(kfree) for automatic resource cleanup. This ensures unittest_data is automatically freed when it goes out of scope in error paths.

For the success path, use retain_and_null_ptr() to transfer ownership of the memory to the device tree and prevent double freeing.

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-2026-23137",
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          "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"
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      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nof: unittest: Fix memory leak in unittest_data_add()\n\nIn unittest_data_add(), if of_resolve_phandles() fails, the allocated\nunittest_data is not freed, leading to a memory leak.\n\nFix this by using scope-based cleanup helper __free(kfree) for automatic\nresource cleanup. This ensures unittest_data is automatically freed when\nit goes out of scope in error paths.\n\nFor the success path, use retain_and_null_ptr() to transfer ownership\nof the memory to the device tree and prevent double freeing."
    },
    {
      "lang": "es",
      "value": "En el kernel de Linux, la siguiente vulnerabilidad ha sido resuelta:\n\nof: unittest: Corrección de fuga de memoria en unittest_data_add()\n\nEn unittest_data_add(), si of_resolve_phandles() falla, el unittest_data asignado no se libera, lo que provoca una fuga de memoria.\n\nEsto se soluciona usando un ayudante de limpieza basado en el ámbito __free(kfree) para la limpieza automática de recursos. Esto asegura que unittest_data se libera automáticamente cuando sale del ámbito en rutas de error.\n\nPara la ruta de éxito, use retain_and_null_ptr() para transferir la propiedad de la memoria al árbol de dispositivos y evitar la doble liberación."
    }
  ],
  "lastModified": "2026-09-14T12:17:38.967",
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