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CVE-2024-53084

Estado: ModificadaMedia (5.5)—

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

drm/imagination: Break an object reference loop

When remaining resources are being cleaned up on driver close, outstanding VM mappings may result in resources being leaked, due to an object reference loop, as shown below, with each object (or set of objects) referencing the object below it:

The reference that the PVR VM Context has on the VM mappings is a soft one, in the sense that the freeing of outstanding VM mappings is done as part of VM context destruction; no reference counts are involved, as is the case for all the other references in the loop.

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To break the reference loop during cleanup, free the outstanding VM mappings before destroying the PVR Context associated with the VM context.

Detalles técnicos trazas, registros y código del informe original
    PVR GEM Object
    GPU scheduler "finished" fence
    GPU scheduler “scheduled” fence
    PVR driver “done” fence
    PVR Context
    PVR VM Context
    PVR VM Mappings
    PVR GEM Object

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": "2.0.3",
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            "drivers/gpu/drm/imagination/pvr_vm.c",
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            "drivers/gpu/drm/imagination/pvr_context.h",
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      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/imagination: Break an object reference loop\n\nWhen remaining resources are being cleaned up on driver close,\noutstanding VM mappings may result in resources being leaked, due\nto an object reference loop, as shown below, with each object (or\nset of objects) referencing the object below it:\n\n    PVR GEM Object\n    GPU scheduler \"finished\" fence\n    GPU scheduler “scheduled” fence\n    PVR driver “done” fence\n    PVR Context\n    PVR VM Context\n    PVR VM Mappings\n    PVR GEM Object\n\nThe reference that the PVR VM Context has on the VM mappings is a\nsoft one, in the sense that the freeing of outstanding VM mappings\nis done as part of VM context destruction; no reference counts are\ninvolved, as is the case for all the other references in the loop.\n\nTo break the reference loop during cleanup, free the outstanding\nVM mappings before destroying the PVR Context associated with the\nVM context."
    },
    {
      "lang": "es",
      "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: drm/imagination: Romper un bucle de referencia de objeto Cuando se están limpiando los recursos restantes al cerrar el controlador, las asignaciones de VM pendientes pueden provocar una fuga de recursos, debido a un bucle de referencia de objeto, como se muestra a continuación, con cada objeto (o conjunto de objetos) haciendo referencia al objeto debajo de él: Objeto PVR GEM Cerca \"terminada\" del programador de GPU Cerca \"programada\" del programador de GPU Cerca \"terminada\" del controlador PVR Contexto PVR Contexto de VM PVR Asignaciones de VM PVR Objeto PVR GEM La referencia que tiene el Contexto de VM PVR en las asignaciones de VM es suave, en el sentido de que la liberación de las asignaciones de VM pendientes se realiza como parte de la destrucción del contexto de VM; no hay recuentos de referencia involucrados, como es el caso de todas las demás referencias en el bucle. Para romper el bucle de referencia durante la limpieza, libere las asignaciones de VM pendientes antes de destruir el Contexto PVR asociado con el contexto de VM."
    }
  ],
  "lastModified": "2026-06-17T08:08:13.990",
  "configurations": [
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