{
  "schemaVersion": 1,
  "attribution": [
    {
      "source": "CISA Known Exploited Vulnerabilities",
      "url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog",
      "licence": "US government work"
    },
    {
      "source": "GitHub Advisory Database",
      "url": "https://github.com/advisories",
      "licence": "CC BY 4.0"
    },
    {
      "source": "Have I Been Pwned",
      "url": "https://haveibeenpwned.com/",
      "licence": "CC BY 4.0"
    },
    {
      "source": "CVE Program (CVE records)",
      "url": "https://www.cve.org/Legal/TermsOfUse",
      "licence": "CVE Terms of Use",
      "notice": "Copyright © 1999-2026, The MITRE Corporation. CVE is a trademark and the CVE logo is a registered trademark of The MITRE Corporation.",
      "terms": "CVE Usage: MITRE hereby grants you a perpetual, worldwide, non-exclusive, no-charge, royalty-free, irrevocable copyright license to reproduce, prepare derivative works of, publicly display, publicly perform, sublicense, and distribute Common Vulnerabilities and Exposures (CVE™). Any copy you make for such purposes is authorized provided that you reproduce MITRE's copyright designation and this license in any such copy."
    },
    {
      "source": "FIRST EPSS",
      "url": "https://www.first.org/epss/",
      "licence": "free to use; FIRST requests attribution"
    }
  ],
  "record": {
    "id": "CVE-2026-80923",
    "sourceURL": "https://www.cve.org/CVERecord?id=CVE-2026-80923",
    "idYear": 2026,
    "status": "PUBLISHED",
    "publishedAt": "2026-09-09T16:19:43.538Z",
    "updatedAt": "2026-10-19T08:45:07.298Z",
    "importedAt": "2026-10-24T01:58:30.346Z",
    "snapshot": {
      "id": "cve_2026-10-24_midnight_baseline",
      "at": "2026-10-24T00:00:00.000Z",
      "source": "https://github.com/CVEProject/cvelistV5/releases/tag/cve_2026-10-24_0100Z"
    },
    "facts": {
      "title": "xhci: dbgtty: Fix unregister on tty_register_driver() failure",
      "summary": "In the Linux kernel, the following vulnerability has been resolved:\n\nxhci: dbgtty: Fix unregister on tty_register_driver() failure\n\nIf tty_register_driver() fails, it drops the reference, but fails to set\nthe global dbc_tty_driver to NULL, causing the unregister to be called\nagain when module exits.\n\nOn module unload dbc_tty_exit() only gates its cleanup on the driver\npointer being non-NULL, so it operates on the already-freed driver:\n\n    module_init(xhci_hcd_init)\n      xhci_hcd_init()\n        xhci_dbc_init()                       [return value ignored]\n          dbc_tty_init()\n            tty_register_driver() fails\n              tty_driver_kref_put()           -> driver freed\n              (dbc_tty_driver left dangling)\n    ...\n    module_exit(xhci_hcd_fini)\n      xhci_hcd_fini()\n        xhci_dbc_exit()\n          dbc_tty_exit()\n            if (dbc_tty_driver)               -> true (dangling)\n              tty_unregister_driver()         -> use-after-free",
      "affected": [
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "4521f16139409cdf9462c7325d43454462cff6c3",
              "status": "affected",
              "versionType": "git",
              "lessThan": "01b7bc0938061f2fd46e0094f6483d8c6c02f7d3"
            },
            {
              "version": "4521f16139409cdf9462c7325d43454462cff6c3",
              "status": "affected",
              "versionType": "git",
              "lessThan": "43635ff6401ca0e0ed21875379eeded921321525"
            },
            {
              "version": "4521f16139409cdf9462c7325d43454462cff6c3",
              "status": "affected",
              "versionType": "git",
              "lessThan": "eaca2814f32b9872a332326324b9e83e01f156d2"
            },
            {
              "version": "4521f16139409cdf9462c7325d43454462cff6c3",
              "status": "affected",
              "versionType": "git",
              "lessThan": "943f976c93e70563b132f5585ff68b08c89641a2"
            },
            {
              "version": "4521f16139409cdf9462c7325d43454462cff6c3",
              "status": "affected",
              "versionType": "git",
              "lessThan": "0d0faf3cc44c4d86fc6faf5cea972c0fbe00b922"
            },
            {
              "version": "4521f16139409cdf9462c7325d43454462cff6c3",
              "status": "affected",
              "versionType": "git",
              "lessThan": "33ed35ca629477f57e0dd1d77d6df96cf5a9eb55"
            },
            {
              "version": "4521f16139409cdf9462c7325d43454462cff6c3",
              "status": "affected",
              "versionType": "git",
              "lessThan": "0e469b94fbba8eb03666da41dd1082b793c50c1a"
            },
            {
              "version": "4521f16139409cdf9462c7325d43454462cff6c3",
              "status": "affected",
              "versionType": "git",
              "lessThan": "a916fa66a43e10f63198b6ce978badffc678821a"
            }
          ]
        },
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "affected",
          "versions": [
            {
              "version": "5.9",
              "status": "affected"
            },
            {
              "version": "0",
              "status": "unaffected",
              "versionType": "semver",
              "lessThan": "5.9"
            },
            {
              "version": "5.15.220",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "5.15.*"
            },
            {
              "version": "6.1.187",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.1.*"
            },
            {
              "version": "6.6.156",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.6.*"
            },
            {
              "version": "6.12.108",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.12.*"
            },
            {
              "version": "6.18.49",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.18.*"
            },
            {
              "version": "7.1.13",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "7.1.*"
            },
            {
              "version": "7.2.3",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "7.2.*"
            },
            {
              "version": "7.3",
              "status": "unaffected",
              "versionType": "original_commit_for_fix",
              "lessThanOrEqual": "*"
            }
          ]
        }
      ]
    }
  }
}