ghsa-r64j-946x-g525
Vulnerability from github
Published
2025-07-03 09:30
Modified
2025-07-03 09:30
Details

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

e1000: Move cancel_work_sync to avoid deadlock

Previously, e1000_down called cancel_work_sync for the e1000 reset task (via e1000_down_and_stop), which takes RTNL.

As reported by users and syzbot, a deadlock is possible in the following scenario:

CPU 0: - RTNL is held - e1000_close - e1000_down - cancel_work_sync (cancel / wait for e1000_reset_task())

CPU 1: - process_one_work - e1000_reset_task - take RTNL

To remedy this, avoid calling cancel_work_sync from e1000_down (e1000_reset_task does nothing if the device is down anyway). Instead, call cancel_work_sync for e1000_reset_task when the device is being removed.

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{
  "affected": [],
  "aliases": [
    "CVE-2025-38114"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2025-07-03T09:15:25Z",
    "severity": null
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\ne1000: Move cancel_work_sync to avoid deadlock\n\nPreviously, e1000_down called cancel_work_sync for the e1000 reset task\n(via e1000_down_and_stop), which takes RTNL.\n\nAs reported by users and syzbot, a deadlock is possible in the following\nscenario:\n\nCPU 0:\n  - RTNL is held\n  - e1000_close\n  - e1000_down\n  - cancel_work_sync (cancel / wait for e1000_reset_task())\n\nCPU 1:\n  - process_one_work\n  - e1000_reset_task\n  - take RTNL\n\nTo remedy this, avoid calling cancel_work_sync from e1000_down\n(e1000_reset_task does nothing if the device is down anyway). Instead,\ncall cancel_work_sync for e1000_reset_task when the device is being\nremoved.",
  "id": "GHSA-r64j-946x-g525",
  "modified": "2025-07-03T09:30:33Z",
  "published": "2025-07-03T09:30:33Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-38114"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/1fd4438ddcc4958ed24662d5125114299e19bae4"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/b4a8085ceefb7bbb12c2b71c55e71fc946c6929f"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}


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