GHSA-86C9-4W26-QF4C

Vulnerability from github – Published: 2026-05-06 12:30 – Updated: 2026-07-04 12:30
VLAI
Details

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

net: cpsw_new: Fix potential unregister of netdev that has not been registered yet

If an error occurs during register_netdev() for the first MAC in cpsw_register_ports(), even though cpsw->slaves[0].ndev is set to NULL, cpsw->slaves[1].ndev would remain unchanged. This could later cause cpsw_unregister_ports() to attempt unregistering the second MAC. To address this, add a check for ndev->reg_state before calling unregister_netdev(). With this change, setting cpsw->slaves[i].ndev to NULL becomes unnecessary and can be removed accordingly.

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-2026-43219"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-05-06T12:16:41Z",
    "severity": "MODERATE"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet: cpsw_new: Fix potential unregister of netdev that has not been registered yet\n\nIf an error occurs during register_netdev() for the first MAC in\ncpsw_register_ports(), even though cpsw-\u003eslaves[0].ndev is set to NULL,\ncpsw-\u003eslaves[1].ndev would remain unchanged. This could later cause\ncpsw_unregister_ports() to attempt unregistering the second MAC.\nTo address this, add a check for ndev-\u003ereg_state before calling\nunregister_netdev(). With this change, setting cpsw-\u003eslaves[i].ndev\nto NULL becomes unnecessary and can be removed accordingly.",
  "id": "GHSA-86c9-4w26-qf4c",
  "modified": "2026-07-04T12:30:27Z",
  "published": "2026-05-06T12:30:33Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-43219"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/14645799ad5253a028cf662e2f9cd18a68f74b31"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/23acc565186ee27e788408cbd81b92730b6aaa3a"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/29739ec197ed66535bc0b86f14ab66c5f4512138"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/349c4cac6f54a81fc107589771f88136a2b20415"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/67cca9df4d17f2c824655d31195b2e75334ae286"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/9d724b34fbe13b71865ad0906a4be97571f19cf5"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/d31a12cee10bbc12b4b523a4709fd1fdee8b7d0f"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/da8e1623a3028e1d8c75eec7898d94c6f17dce40"
    }
  ],
  "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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