fkie_cve-2022-49455
Vulnerability from fkie_nvd
Published
2025-02-26 07:01
Modified
2025-10-01 20:16
Severity ?
7.8 (High) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
7.8 (High) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Summary
In the Linux kernel, the following vulnerability has been resolved: misc: ocxl: fix possible double free in ocxl_file_register_afu info_release() will be called in device_unregister() when info->dev's reference count is 0. So there is no need to call ocxl_afu_put() and kfree() again. Fix this by adding free_minor() and return to err_unregister error path.
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/252768d32e92c1214aeebb5fec0844ca479bcf5cPatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/8fb674216835e1f0c143762696d645facebb4685Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/950cf957fe34d40d63dfa3bf3968210430b6491ePatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/9e9087cf34ee69f4e95d146ac29385d6e367a97bPatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/de65c32ace9aa70d51facc61ba986607075e3a25Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/ee89d8dee55ab4b3b8ad8b70866b2841ba334767Patch
Impacted products
Vendor Product Version
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\nmisc: ocxl: fix possible double free in ocxl_file_register_afu\n\ninfo_release() will be called in device_unregister() when info-\u003edev\u0027s\nreference count is 0. So there is no need to call ocxl_afu_put() and\nkfree() again.\n\nFix this by adding free_minor() and return to err_unregister error path."
    },
    {
      "lang": "es",
      "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: misc: ocxl: se corrige la posible doble liberaci\u00f3n en ocxl_file_register_afu. Se llamar\u00e1 a info_release() en device_unregister() cuando el recuento de referencias de info-\u0026gt;dev sea 0. Por lo tanto, no es necesario llamar a ocxl_afu_put() y kfree() nuevamente. Corrija esto agregando free_minor() y regrese a la ruta de error err_unregister."
    }
  ],
  "id": "CVE-2022-49455",
  "lastModified": "2025-10-01T20:16:21.780",
  "metrics": {
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          "baseScore": 7.8,
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          "confidentialityImpact": "HIGH",
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          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
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  "vulnStatus": "Modified",
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}


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