GHSA-GWMP-87PX-JXRX

Vulnerability from github – Published: 2024-06-19 15:30 – Updated: 2024-08-27 21:31
VLAI
Details

In the Linux kernel, the following vulnerability has been resolved:

ax25: Fix reference count leak issue of net_device

There is a reference count leak issue of the object "net_device" in ax25_dev_device_down(). When the ax25 device is shutting down, the ax25_dev_device_down() drops the reference count of net_device one or zero times depending on if we goto unlock_put or not, which will cause memory leak.

In order to solve the above issue, decrease the reference count of net_device after dev->ax25_ptr is set to null.

Severity
5.5 (Medium)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
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{
  "affected": [],
  "aliases": [
    "CVE-2024-38554"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2024-06-19T14:15:15Z",
    "severity": "MODERATE"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nax25: Fix reference count leak issue of net_device\n\nThere is a reference count leak issue of the object \"net_device\" in\nax25_dev_device_down(). When the ax25 device is shutting down, the\nax25_dev_device_down() drops the reference count of net_device one\nor zero times depending on if we goto unlock_put or not, which will\ncause memory leak.\n\nIn order to solve the above issue, decrease the reference count of\nnet_device after dev-\u003eax25_ptr is set to null.",
  "id": "GHSA-gwmp-87px-jxrx",
  "modified": "2024-08-27T21:31:13Z",
  "published": "2024-06-19T15:30:53Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2024-38554"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/36e56b1b002bb26440403053f19f9e1a8bc075b2"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/3ec437f9bbae68e9b38115c4c91de995f73f6bad"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/8bad3a20a27be8d935f2aae08d3c6e743754944a"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/965d940fb7414b310a22666503d2af69459c981b"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/eef95df9b752699bddecefa851f64858247246e9"
    }
  ],
  "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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