CVE-2022-50576 (GCVE-0-2022-50576)
Vulnerability from cvelistv5
Published
2025-10-22 13:23
Modified
2025-10-22 13:23
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
Impacted products
Vendor Product Version
Linux Linux Version: 3c6a483275f47a2ef7119309ad3d791c10cf30da
Version: 3c6a483275f47a2ef7119309ad3d791c10cf30da
Version: 3c6a483275f47a2ef7119309ad3d791c10cf30da
Version: 3c6a483275f47a2ef7119309ad3d791c10cf30da
Version: 3c6a483275f47a2ef7119309ad3d791c10cf30da
Version: 3c6a483275f47a2ef7119309ad3d791c10cf30da
Version: 3c6a483275f47a2ef7119309ad3d791c10cf30da
Version: 3c6a483275f47a2ef7119309ad3d791c10cf30da
Version: 3c6a483275f47a2ef7119309ad3d791c10cf30da
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{
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          "programFiles": [
            "drivers/tty/serial/pch_uart.c"
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          "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."
        }
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      "providerMetadata": {
        "dateUpdated": "2025-10-22T13:23:30.250Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
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          "url": "https://git.kernel.org/stable/c/56e5a7c5ee3f0dc8978b5df2b1a98a1b060c5e2a"
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          "url": "https://git.kernel.org/stable/c/8be3a7bf773700534a6e8f87f6ed2ed111254be5"
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    "assignerShortName": "Linux",
    "cveId": "CVE-2022-50576",
    "datePublished": "2025-10-22T13:23:30.250Z",
    "dateReserved": "2025-10-22T13:20:23.761Z",
    "dateUpdated": "2025-10-22T13:23:30.250Z",
    "state": "PUBLISHED"
  },
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  "dataVersion": "5.1",
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  }
}


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