{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "d4b50ac06ea6e47bdd2b04e97d1090c673c80645"
            },
            {
              "fixed": "85d963499f1feeea287c0a37c3eac3fc1898eca9"
            },
            {
              "fixed": "0ae90a19e6b5a8557d25d95facb7e01c9c07af38"
            },
            {
              "fixed": "c99ba6c234d4d537c317336376b78c088174034a"
            },
            {
              "fixed": "2eda1513f573945c1e3a0090341f3d28740463b1"
            },
            {
              "fixed": "dca151633c0fde90935311c60e7cfc064aa56134"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Linux",
        "name": "Kernel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "6.6.8"
            },
            {
              "fixed": "6.6.157"
            },
            {
              "fixed": "6.12.109"
            },
            {
              "fixed": "6.18.50"
            },
            {
              "fixed": "7.2.4"
            },
            {
              "fixed": "7.3-rc1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/89xxx/CVE-2026-89623.json"
  },
  "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": "CVE-2026-89623",
  "modified": "2026-09-15T03:30:43.111129184Z",
  "published": "2026-09-11T19:45:20.758Z",
  "references": [
    {
      "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"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/89xxx/CVE-2026-89623.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-89623"
    },
    {
      "type": "PACKAGE",
      "url": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
    }
  ],
  "schema_version": "1.9.0",
  "summary": "HID: mcp2221: stop device IO before hid_hw_stop"
}