{
  "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-2026-92521",
    "sourceURL": "https://www.cve.org/CVERecord?id=CVE-2026-92521",
    "idYear": 2026,
    "status": "PUBLISHED",
    "publishedAt": "2026-09-17T16:10:28.144Z",
    "updatedAt": "2026-10-19T09:04:27.575Z",
    "importedAt": "2026-10-24T01:58:35.090Z",
    "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": "ACPI: PCI: Clear driver_data on all paths that free the acpi_pci_root",
      "summary": "In the Linux kernel, the following vulnerability has been resolved:\n\nACPI: PCI: Clear driver_data on all paths that free the acpi_pci_root\n\nacpi_pci_root_add() assigns the freshly allocated root to\ndevice->driver_data before dmar_device_add() and pci_acpi_scan_root().\nBoth failure paths reach the end: label where root is kfree()'d, but\nonly the pci_acpi_scan_root() path clears driver_data first.\n\nWhen dmar_device_add() fails during a hot-add, root is freed while\ndevice->driver_data still points at it.  The ACPI core does not clear\ndriver_data on attach failure, so a later acpi_pci_find_root() call may\ndereference this dangling pointer.\n\nacpi_pci_root_remove() has the same problem: it frees root without\nclearing device->driver_data, leaving a dangling pointer behind after\nthe root bridge is removed.\n\nMove the NULL assignment to the shared end: label so every error path in\nacpi_pci_root_add() clears driver_data before freeing root, and clear it\nin acpi_pci_root_remove() as well, so the object is never left reachable\nthrough driver_data after being freed.",
      "affected": [
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "db89b4f0dbab837d0f3de2c3e9427a8d5393afa3",
              "status": "affected",
              "versionType": "git",
              "lessThan": "321bb0eb1486a0d575f02e24e3f4170e408c2f51"
            },
            {
              "version": "db89b4f0dbab837d0f3de2c3e9427a8d5393afa3",
              "status": "affected",
              "versionType": "git",
              "lessThan": "3c1e8a14f9d06c1ed6f3e4bd2d283a62079109e2"
            },
            {
              "version": "db89b4f0dbab837d0f3de2c3e9427a8d5393afa3",
              "status": "affected",
              "versionType": "git",
              "lessThan": "a285fa3780c768dcc51c76768707d099a2cc611d"
            },
            {
              "version": "db89b4f0dbab837d0f3de2c3e9427a8d5393afa3",
              "status": "affected",
              "versionType": "git",
              "lessThan": "6aaf6dbf54fdfae096f3f90a79e9614e46579280"
            },
            {
              "version": "db89b4f0dbab837d0f3de2c3e9427a8d5393afa3",
              "status": "affected",
              "versionType": "git",
              "lessThan": "70cf773cca30a10b4964c24520a71279c974b899"
            },
            {
              "version": "db89b4f0dbab837d0f3de2c3e9427a8d5393afa3",
              "status": "affected",
              "versionType": "git",
              "lessThan": "3eee4c21931dc048ce63b86809f04e4e6f0dcad5"
            },
            {
              "version": "db89b4f0dbab837d0f3de2c3e9427a8d5393afa3",
              "status": "affected",
              "versionType": "git",
              "lessThan": "6e11ac626f9f9fc3a2ed27dfa44ccbe5fb762217"
            },
            {
              "version": "db89b4f0dbab837d0f3de2c3e9427a8d5393afa3",
              "status": "affected",
              "versionType": "git",
              "lessThan": "8a742141f7ab84975aa758b775567ef4740ef0cf"
            }
          ]
        },
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "affected",
          "versions": [
            {
              "version": "2.6.28",
              "status": "affected"
            },
            {
              "version": "0",
              "status": "unaffected",
              "versionType": "semver",
              "lessThan": "2.6.28"
            },
            {
              "version": "5.10.270",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "5.10.*"
            },
            {
              "version": "5.15.221",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "5.15.*"
            },
            {
              "version": "6.1.188",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.1.*"
            },
            {
              "version": "6.6.157",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.6.*"
            },
            {
              "version": "6.12.110",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.12.*"
            },
            {
              "version": "6.18.52",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.18.*"
            },
            {
              "version": "7.2.6",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "7.2.*"
            },
            {
              "version": "7.3",
              "status": "unaffected",
              "versionType": "original_commit_for_fix",
              "lessThanOrEqual": "*"
            }
          ]
        }
      ]
    }
  }
}