ghsa-gwmp-87px-jxrx
Vulnerability from github
Published
2024-06-19 15:30
Modified
2024-08-27 21:31
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:

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.

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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->ax25_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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