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GHSA-P59V-M859-4PPQ

Vulnerability from github – Published: 2026-09-11 21:31 – Updated: 2026-09-14 15:32
VLAI
Details

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

HID: mcp2221: stop device IO before hid_hw_stop

Quiesce device IO at the start of the devm cleanup callback mcp2221_hid_unregister() so that incoming HID reports cannot race with hardware teardown during probe failure or device removal, addressing a potential use-after-free.

Guard the call to hid_device_io_stop() with io_started. On normal removal hid_device_remove() has already cleared io_started before the devres group is released, so an unconditional call would otherwise hit the !io_started path and emit a spurious "io already stopped" warning on every removal. The guard preserves the probe-failure balancing, where io_started is still set after hid_device_io_start(), while staying silent on the normal removal path.

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{
  "affected": [],
  "aliases": [
    "CVE-2026-89623"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-09-11T20:19:47Z",
    "severity": null
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nHID: mcp2221: stop device IO before hid_hw_stop\n\nQuiesce device IO at the start of the devm cleanup callback\nmcp2221_hid_unregister() so that incoming HID reports cannot race with\nhardware teardown during probe failure or device removal, addressing a\npotential use-after-free.\n\nGuard the call to hid_device_io_stop() with io_started. On normal\nremoval hid_device_remove() has already cleared io_started before the\ndevres group is released, so an unconditional call would otherwise hit\nthe !io_started path and emit a spurious \"io already stopped\" warning\non every removal. The guard preserves the probe-failure balancing,\nwhere io_started is still set after hid_device_io_start(), while\nstaying silent on the normal removal path.",
  "id": "GHSA-p59v-m859-4ppq",
  "modified": "2026-09-14T15:32:32Z",
  "published": "2026-09-11T21:31:34Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-89623"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/0ae90a19e6b5a8557d25d95facb7e01c9c07af38"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/2eda1513f573945c1e3a0090341f3d28740463b1"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/85d963499f1feeea287c0a37c3eac3fc1898eca9"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/c99ba6c234d4d537c317336376b78c088174034a"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/dca151633c0fde90935311c60e7cfc064aa56134"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}



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