ghsa-xv88-66vv-vx9g
Vulnerability from github
Published
2024-10-21 21:30
Modified
2024-10-25 18:30
Severity ?
5.5 (Medium) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Details

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().

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{
  "affected": [],
  "aliases": [
    "CVE-2022-48973"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2024-10-21T20:15:09Z",
    "severity": "MODERATE"
  },
  "details": "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().",
  "id": "GHSA-xv88-66vv-vx9g",
  "modified": "2024-10-25T18:30:47Z",
  "published": "2024-10-21T21:30:51Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2022-48973"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/4271515f189bd5fe2ec86b4089dab7cb804625d2"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/45fecdb9f658d9c82960c98240bc0770ade19aca"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/4749c5cc147c9860b96db1e71cc36d1de1bd3f59"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/48bd5d3801f6b67cc144449d434abbd5043a6d37"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/5ee6413d3dd972930af787b2c0c7aaeb379fa521"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/71d591ef873f9ebb86cd8d053b3caee785b2de6a"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/b2bc053ebbba57a06fa655db5ea796de2edce445"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/e364ce04d8f840478b09eee57b614de7cf1e743e"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ]
}


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