fkie_cve-2022-49002
Vulnerability from fkie_nvd
Published
2024-10-21 20:15
Modified
2024-10-25 14:24
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: iommu/vt-d: Fix PCI device refcount leak in dmar_dev_scope_init() 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() for the error path to avoid reference count leak.
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/2a8f7b90681472948de172dbbf5a54cd342870aaPatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/4bedbbd782ebbe7287231fea862c158d4f08a9e3Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/71c4a621985fc051ab86d3a86c749069a993fcb2Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/876d7bfb89273997056220029ff12b1c2cc4691dPatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/a5c65cd56aed027f8a97fda8b691caaeb66d115ePatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/bdb613ef179ad4bb9d56a2533e9b30e434f1dfb7Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/cbdd83bd2fd67142b03ce9dbdd1eab322ff7321fPatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/d47bc9d7bcdbb9adc9703513d964b514fee5b0bfPatch
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


To clipboard 

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      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\niommu/vt-d: Fix PCI device refcount leak in dmar_dev_scope_init()\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() for the error path to avoid reference count leak."
    },
    {
      "lang": "es",
      "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: iommu/vt-d: Se corrige la p\u00e9rdida de recuento de referencias del dispositivo PCI en dmar_dev_scope_init(). for_each_pci_dev() se implementa mediante pci_get_device(). El comentario de pci_get_device() dice que aumentar\u00e1 el recuento de referencias para el pci_dev devuelto y tambi\u00e9n disminuir\u00e1 el recuento de referencias 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 referencias. Agregue el pci_dev_put() faltante para la ruta de error para evitar la p\u00e9rdida del recuento de referencias."
    }
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  "id": "CVE-2022-49002",
  "lastModified": "2024-10-25T14:24:12.620",
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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": "2024-10-21T20:15:11.853",
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  "weaknesses": [
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      "source": "nvd@nist.gov",
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}


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