ghsa-9h49-4vx3-2m5r
Vulnerability from github
Published
2025-03-07 09:30
Modified
2025-11-03 21:33
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:

usb: gadget: core: flush gadget workqueue after device removal

device_del() can lead to new work being scheduled in gadget->work workqueue. This is observed, for example, with the dwc3 driver with the following call stack: device_del() gadget_unbind_driver() usb_gadget_disconnect_locked() dwc3_gadget_pullup() dwc3_gadget_soft_disconnect() usb_gadget_set_state() schedule_work(&gadget->work)

Move flush_work() after device_del() to ensure the workqueue is cleaned up.

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{
  "affected": [],
  "aliases": [
    "CVE-2025-21838"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2025-03-07T09:15:16Z",
    "severity": "MODERATE"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nusb: gadget: core: flush gadget workqueue after device removal\n\ndevice_del() can lead to new work being scheduled in gadget-\u003ework\nworkqueue. This is observed, for example, with the dwc3 driver with the\nfollowing call stack:\n  device_del()\n    gadget_unbind_driver()\n      usb_gadget_disconnect_locked()\n        dwc3_gadget_pullup()\n\t  dwc3_gadget_soft_disconnect()\n\t    usb_gadget_set_state()\n\t      schedule_work(\u0026gadget-\u003ework)\n\nMove flush_work() after device_del() to ensure the workqueue is cleaned\nup.",
  "id": "GHSA-9h49-4vx3-2m5r",
  "modified": "2025-11-03T21:33:08Z",
  "published": "2025-03-07T09:30:35Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-21838"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/399a45e5237ca14037120b1b895bd38a3b4492ea"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/859cb45aefa6de823b2fa7f229fe6d9562c9f3b7"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/97695b5a1b5467a4f91194db12160f56da445dfe"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/e3bc1a9a67ce33a2e761e6e7b7c2afc6cb9b7266"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/f894448f3904d7ad66fecef8f01fe0172629e091"
    },
    {
      "type": "WEB",
      "url": "https://lists.debian.org/debian-lts-announce/2025/05/msg00045.html"
    }
  ],
  "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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