fkie_cve-2021-47659
Vulnerability from fkie_nvd
Published
2025-02-26 06:37
Modified
2025-10-14 19:07
Severity ?
5.5 (Medium) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
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/1e29d829ad51d1472dd035487953a6724b56fc33Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/4ab7e453a3ee88c274cf97bee9487ab92a66d313Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/4b674dd69701c2e22e8e7770c1706a69f3b17269Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/787163d19bc3cdc6ca4b96223f62208534d1cf6bPatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/978e3d023256bfaf34a0033d40c94e8a8e70cf3cPatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/ad6dd7a2bac86118985c7b3426e175b9d3c1ec4fPatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/b5cd108143513e4498027b96ec4710702d186f11Patch
Impacted products
Vendor Product Version
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *


To clipboard 

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  "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": "2025-10-14T19:07:46.227",
  "metrics": {
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          "attackComplexity": "LOW",
          "attackVector": "LOCAL",
          "availabilityImpact": "HIGH",
          "baseScore": 5.5,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "privilegesRequired": "LOW",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
          "version": "3.1"
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        "exploitabilityScore": 1.8,
        "impactScore": 3.6,
        "source": "nvd@nist.gov",
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  "published": "2025-02-26T06:37:07.640",
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          "value": "NVD-CWE-noinfo"
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      "source": "nvd@nist.gov",
      "type": "Primary"
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  ]
}


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