ghsa-jchm-w95j-v3v9
Vulnerability from github
Published
2025-10-22 15:31
Modified
2025-10-22 15:31
Details

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.

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{
  "affected": [],
  "aliases": [
    "CVE-2022-50576"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2025-10-22T14:15:42Z",
    "severity": null
  },
  "details": "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": "GHSA-jchm-w95j-v3v9",
  "modified": "2025-10-22T15:31:10Z",
  "published": "2025-10-22T15:31:10Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2022-50576"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/07f4ca68b0f6bf84b6b391c14b59fd179fcde9c5"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/4f5d28865c665c9064de631a518f9bc8099d9ce4"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/516614a371c26e3334625b4bca19a5362bf658d6"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/56e5a7c5ee3f0dc8978b5df2b1a98a1b060c5e2a"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/6f7d82380fbeaed3a940efc33c23f0c4bbd0fc02"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/8be3a7bf773700534a6e8f87f6ed2ed111254be5"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/90ff030ca10b69feeebda1427550ebf9ed2ad868"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/d165388227aa7e46a9751b90bae6337b5335cdbb"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/dfd15c5550b9190d5b0f9bcacb3e6436322f3854"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}


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