fkie_cve-2022-50576
Vulnerability from fkie_nvd
Published
2025-10-22 14:15
Modified
2025-10-22 21:12
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved: serial: pch: Fix PCI device refcount leak in pch_request_dma() As comment of pci_get_slot() says, it returns a pci_device with its refcount increased. The caller must decrement the reference count by calling pci_dev_put(). Since 'dma_dev' is only used to filter the channel in filter(), we can call pci_dev_put() before exiting from pch_request_dma(). Add the missing pci_dev_put() for the normal and error path.
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/07f4ca68b0f6bf84b6b391c14b59fd179fcde9c5
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/4f5d28865c665c9064de631a518f9bc8099d9ce4
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/516614a371c26e3334625b4bca19a5362bf658d6
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/56e5a7c5ee3f0dc8978b5df2b1a98a1b060c5e2a
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/6f7d82380fbeaed3a940efc33c23f0c4bbd0fc02
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/8be3a7bf773700534a6e8f87f6ed2ed111254be5
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/90ff030ca10b69feeebda1427550ebf9ed2ad868
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/d165388227aa7e46a9751b90bae6337b5335cdbb
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/dfd15c5550b9190d5b0f9bcacb3e6436322f3854
Impacted products
Vendor Product Version


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{
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nserial: pch: Fix PCI device refcount leak in pch_request_dma()\n\nAs comment of pci_get_slot() says, it returns a pci_device with its\nrefcount increased. The caller must decrement the reference count by\ncalling pci_dev_put().\n\nSince \u0027dma_dev\u0027 is only used to filter the channel in filter(), we can\ncall pci_dev_put() before exiting from pch_request_dma(). Add the\nmissing pci_dev_put() for the normal and error path."
    }
  ],
  "id": "CVE-2022-50576",
  "lastModified": "2025-10-22T21:12:48.953",
  "metrics": {},
  "published": "2025-10-22T14:15:42.560",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/07f4ca68b0f6bf84b6b391c14b59fd179fcde9c5"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/4f5d28865c665c9064de631a518f9bc8099d9ce4"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/516614a371c26e3334625b4bca19a5362bf658d6"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/56e5a7c5ee3f0dc8978b5df2b1a98a1b060c5e2a"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/6f7d82380fbeaed3a940efc33c23f0c4bbd0fc02"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/8be3a7bf773700534a6e8f87f6ed2ed111254be5"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/90ff030ca10b69feeebda1427550ebf9ed2ad868"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/d165388227aa7e46a9751b90bae6337b5335cdbb"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/dfd15c5550b9190d5b0f9bcacb3e6436322f3854"
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Awaiting Analysis"
}


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