fkie_cve-2021-47659
Vulnerability from fkie_nvd
Published
2025-02-26 06:37
Modified
2025-02-26 06:37
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved: drm/plane: Move range check for format_count earlier While the check for format_count > 64 in __drm_universal_plane_init() shouldn't be hit (it's a WARN_ON), in its current position it will then leak the plane->format_types array and fail to call drm_mode_object_unregister() leaking the modeset identifier. Move it to the start of the function to avoid allocating those resources in the first place.
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/1e29d829ad51d1472dd035487953a6724b56fc33
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/4ab7e453a3ee88c274cf97bee9487ab92a66d313
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/4b674dd69701c2e22e8e7770c1706a69f3b17269
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/787163d19bc3cdc6ca4b96223f62208534d1cf6b
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/978e3d023256bfaf34a0033d40c94e8a8e70cf3c
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/ad6dd7a2bac86118985c7b3426e175b9d3c1ec4f
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/b5cd108143513e4498027b96ec4710702d186f11
Impacted products
Vendor Product Version


To clipboard 

{
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/plane: Move range check for format_count earlier\n\nWhile the check for format_count \u003e 64 in __drm_universal_plane_init()\nshouldn\u0027t be hit (it\u0027s a WARN_ON), in its current position it will then\nleak the plane-\u003eformat_types array and fail to call\ndrm_mode_object_unregister() leaking the modeset identifier. Move it to\nthe start of the function to avoid allocating those resources in the\nfirst place."
    },
    {
      "lang": "es",
      "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: drm/plane: mover la comprobaci\u00f3n de rango para format_count antes Si bien la comprobaci\u00f3n para format_count \u0026gt; 64 en __drm_universal_plane_init() no deber\u00eda verse afectada (es un WARN_ON), en su posici\u00f3n actual perder\u00e1 la matriz plane-\u0026gt;format_types y no podr\u00e1 llamar a drm_mode_object_unregister(), lo que filtra el identificador modeset. Mu\u00e9valo al inicio de la funci\u00f3n para evitar asignar esos recursos en primer lugar."
    }
  ],
  "id": "CVE-2021-47659",
  "lastModified": "2025-02-26T06:37:07.640",
  "metrics": {},
  "published": "2025-02-26T06:37:07.640",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/1e29d829ad51d1472dd035487953a6724b56fc33"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/4ab7e453a3ee88c274cf97bee9487ab92a66d313"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/4b674dd69701c2e22e8e7770c1706a69f3b17269"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/787163d19bc3cdc6ca4b96223f62208534d1cf6b"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/978e3d023256bfaf34a0033d40c94e8a8e70cf3c"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/ad6dd7a2bac86118985c7b3426e175b9d3c1ec4f"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/b5cd108143513e4498027b96ec4710702d186f11"
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Awaiting Analysis"
}


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