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FKIE_CVE-2026-89623

Vulnerability from fkie_nvd - Published: 2026-09-11 20:19 - Updated: 2026-09-14 13:19
Severity
Summary
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.
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/0ae90a19e6b5a8557d25d95facb7e01c9c07af38
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/2eda1513f573945c1e3a0090341f3d28740463b1
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/85d963499f1feeea287c0a37c3eac3fc1898eca9
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/c99ba6c234d4d537c317336376b78c088174034a
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/dca151633c0fde90935311c60e7cfc064aa56134
Impacted products
Vendor Product Version
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/hid/hid-mcp2221.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "85d963499f1feeea287c0a37c3eac3fc1898eca9",
              "status": "affected",
              "version": "d4b50ac06ea6e47bdd2b04e97d1090c673c80645",
              "versionType": "git"
            },
            {
              "lessThan": "0ae90a19e6b5a8557d25d95facb7e01c9c07af38",
              "status": "affected",
              "version": "d4b50ac06ea6e47bdd2b04e97d1090c673c80645",
              "versionType": "git"
            },
            {
              "lessThan": "c99ba6c234d4d537c317336376b78c088174034a",
              "status": "affected",
              "version": "d4b50ac06ea6e47bdd2b04e97d1090c673c80645",
              "versionType": "git"
            },
            {
              "lessThan": "2eda1513f573945c1e3a0090341f3d28740463b1",
              "status": "affected",
              "version": "d4b50ac06ea6e47bdd2b04e97d1090c673c80645",
              "versionType": "git"
            },
            {
              "lessThan": "dca151633c0fde90935311c60e7cfc064aa56134",
              "status": "affected",
              "version": "d4b50ac06ea6e47bdd2b04e97d1090c673c80645",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/hid/hid-mcp2221.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "6.6.157",
              "status": "affected",
              "version": "6.6.8",
              "versionType": "semver"
            },
            {
              "lessThan": "6.12.109",
              "status": "affected",
              "version": "6.6.8",
              "versionType": "semver"
            },
            {
              "lessThan": "6.18.50",
              "status": "affected",
              "version": "6.6.8",
              "versionType": "semver"
            },
            {
              "lessThan": "7.2.4",
              "status": "affected",
              "version": "6.6.8",
              "versionType": "semver"
            },
            {
              "lessThan": "7.3-rc1",
              "status": "affected",
              "version": "6.6.8",
              "versionType": "semver"
            }
          ]
        }
      ],
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "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": "CVE-2026-89623",
  "lastModified": "2026-09-14T13:19:16.097",
  "metrics": {},
  "published": "2026-09-11T20:19:47.630",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/0ae90a19e6b5a8557d25d95facb7e01c9c07af38"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/2eda1513f573945c1e3a0090341f3d28740463b1"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/85d963499f1feeea287c0a37c3eac3fc1898eca9"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/c99ba6c234d4d537c317336376b78c088174034a"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/dca151633c0fde90935311c60e7cfc064aa56134"
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Received"
}



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