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CVE-2025-21998

Estado: ModificadaMedia (4.7)—

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

firmware: qcom: uefisecapp: fix efivars registration race

Since the conversion to using the TZ allocator, the efivars service is registered before the memory pool has been allocated, something which can lead to a NULL-pointer dereference in case of a racing EFI variable access.

Make sure that all resources have been set up before registering the efivars.

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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              "exploitation": "none"
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              "automatable": "no"
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              "technicalImpact": "partial"
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          "version": "2.0.3",
          "timestamp": "2025-10-01T17:10:57.712246Z"
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  "published": "2025-04-03T08:15:15.243",
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          "value": "CWE-367"
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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\nfirmware: qcom: uefisecapp: fix efivars registration race\n\nSince the conversion to using the TZ allocator, the efivars service is\nregistered before the memory pool has been allocated, something which\ncan lead to a NULL-pointer dereference in case of a racing EFI variable\naccess.\n\nMake sure that all resources have been set up before registering the\nefivars."
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      "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: firmware: qcom: uefisecapp: corrección de la ejecución de registro de efivars. Desde la conversión al uso del asignador TZ, el servicio efivars se registra antes de asignar el pool de memoria, lo que puede provocar una desreferencia de puntero nulo en caso de un acceso a variable EFI en ejecución. Asegúrese de que todos los recursos estén configurados antes de registrar las efivars."
    }
  ],
  "lastModified": "2026-06-17T08:44:48.340",
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