fkie_cve-2022-48973
Vulnerability from fkie_nvd
Published
2024-10-21 20:15
Modified
2024-10-25 15:35
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: gpio: amd8111: Fix PCI device reference count leak for_each_pci_dev() is implemented by pci_get_device(). The comment of pci_get_device() says that it will increase the reference count for the returned pci_dev and also decrease the reference count for the input pci_dev @from if it is not NULL. If we break for_each_pci_dev() loop with pdev not NULL, we need to call pci_dev_put() to decrease the reference count. Add the missing pci_dev_put() after the 'out' label. Since pci_dev_put() can handle NULL input parameter, there is no problem for the 'Device not found' branch. For the normal path, add pci_dev_put() in amd_gpio_exit().
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/4271515f189bd5fe2ec86b4089dab7cb804625d2Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/45fecdb9f658d9c82960c98240bc0770ade19acaPatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/4749c5cc147c9860b96db1e71cc36d1de1bd3f59Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/48bd5d3801f6b67cc144449d434abbd5043a6d37Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/5ee6413d3dd972930af787b2c0c7aaeb379fa521Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/71d591ef873f9ebb86cd8d053b3caee785b2de6aPatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/b2bc053ebbba57a06fa655db5ea796de2edce445Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/e364ce04d8f840478b09eee57b614de7cf1e743ePatch
Impacted products
Vendor Product Version
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel 6.1
linux linux_kernel 6.1
linux linux_kernel 6.1
linux linux_kernel 6.1
linux linux_kernel 6.1
linux linux_kernel 6.1
linux linux_kernel 6.1
linux linux_kernel 6.1


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  "cveTags": [],
  "descriptions": [
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      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ngpio: amd8111: Fix PCI device reference count leak\n\nfor_each_pci_dev() is implemented by pci_get_device(). The comment of\npci_get_device() says that it will increase the reference count for the\nreturned pci_dev and also decrease the reference count for the input\npci_dev @from if it is not NULL.\n\nIf we break for_each_pci_dev() loop with pdev not NULL, we need to call\npci_dev_put() to decrease the reference count. Add the missing\npci_dev_put() after the \u0027out\u0027 label. Since pci_dev_put() can handle NULL\ninput parameter, there is no problem for the \u0027Device not found\u0027 branch.\nFor the normal path, add pci_dev_put() in amd_gpio_exit()."
    },
    {
      "lang": "es",
      "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: gpio: amd8111: Se solucion\u00f3 la fuga de recuento de referencia del dispositivo PCI. for_each_pci_dev() se implementa mediante pci_get_device(). El comentario de pci_get_device() dice que aumentar\u00e1 el recuento de referencia para el pci_dev devuelto y tambi\u00e9n disminuir\u00e1 el recuento de referencia para el pci_dev de entrada @from si no es NULL. Si interrumpimos el bucle for_each_pci_dev() con pdev no NULL, debemos llamar a pci_dev_put() para disminuir el recuento de referencia. Agregue el pci_dev_put() faltante despu\u00e9s de la etiqueta \u0027out\u0027. Dado que pci_dev_put() puede manejar el par\u00e1metro de entrada NULL, no hay ning\u00fan problema para la rama \u0027Dispositivo no encontrado\u0027. Para la ruta normal, agregue pci_dev_put() en amd_gpio_exit()."
    }
  ],
  "id": "CVE-2022-48973",
  "lastModified": "2024-10-25T15:35:54.687",
  "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",
        "type": "Primary"
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  "published": "2024-10-21T20:15:09.430",
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  "vulnStatus": "Analyzed",
  "weaknesses": [
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          "value": "NVD-CWE-Other"
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      "source": "nvd@nist.gov",
      "type": "Primary"
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}


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