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CVE-2025-71124

Estado: AnalizadaMedia (5.5)—

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

drm/msm/a6xx: move preempt_prepare_postamble after error check

Move the call to preempt_prepare_postamble() after verifying that preempt_postamble_ptr is valid. If preempt_postamble_ptr is NULL, dereferencing it in preempt_prepare_postamble() would lead to a crash.

This change avoids calling the preparation function when the postamble allocation has failed, preventing potential NULL pointer dereference and ensuring proper error handling.

Patchwork: https://patchwork.freedesktop.org/patch/687659/

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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          "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"
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  "published": "2026-01-14T15:16:02.110",
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      "tags": [
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      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
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  "weaknesses": [
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      "description": [
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          "value": "CWE-476"
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  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/msm/a6xx: move preempt_prepare_postamble after error check\n\nMove the call to preempt_prepare_postamble() after verifying that\npreempt_postamble_ptr is valid. If preempt_postamble_ptr is NULL,\ndereferencing it in preempt_prepare_postamble() would lead to a crash.\n\nThis change avoids calling the preparation function when the\npostamble allocation has failed, preventing potential NULL pointer\ndereference and ensuring proper error handling.\n\nPatchwork: https://patchwork.freedesktop.org/patch/687659/"
    },
    {
      "lang": "es",
      "value": "En el kernel de Linux, la siguiente vulnerabilidad ha sido resuelta:\n\ndrm/msm/a6xx: mover preempt_prepare_postamble después de la verificación de errores\n\nMover la llamada a preempt_prepare_postamble() después de verificar que preempt_postamble_ptr es válido. Si preempt_postamble_ptr es NULL, desreferenciarlo en preempt_prepare_postamble() llevaría a un fallo.\n\nEste cambio evita llamar a la función de preparación cuando la asignación del postámbulo ha fallado, previniendo la desreferencia potencial de puntero NULL y asegurando un manejo de errores adecuado.\n\nPatchwork: https://patchwork.freedesktop.org/patch/687659/"
    }
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  "lastModified": "2026-06-17T10:03:42.773",
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