{
  "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-2025-40211",
    "sourceURL": "https://www.cve.org/CVERecord?id=CVE-2025-40211",
    "idYear": 2025,
    "status": "PUBLISHED",
    "publishedAt": "2025-11-21T10:21:36.438Z",
    "updatedAt": "2026-06-16T19:58:39.666Z",
    "importedAt": "2026-10-24T01:57:34.152Z",
    "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: video: Fix use-after-free in acpi_video_switch_brightness()",
      "summary": "In the Linux kernel, the following vulnerability has been resolved:\n\nACPI: video: Fix use-after-free in acpi_video_switch_brightness()\n\nThe switch_brightness_work delayed work accesses device->brightness\nand device->backlight, freed by acpi_video_dev_unregister_backlight()\nduring device removal.\n\nIf the work executes after acpi_video_bus_unregister_backlight()\nfrees these resources, it causes a use-after-free when\nacpi_video_switch_brightness() dereferences device->brightness or\ndevice->backlight.\n\nFix this by calling cancel_delayed_work_sync() for each device's\nswitch_brightness_work in acpi_video_bus_remove_notify_handler()\nafter removing the notify handler that queues the work. This ensures\nthe work completes before the memory is freed.\n\n[ rjw: Changelog edit ]",
      "affected": [
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "8ab58e8e7e097bae5fe39cbc67eb93a91f7134b7",
              "status": "affected",
              "versionType": "git",
              "lessThan": "3f803ccf5a0c043e7c8b83f6665b082401fc8bee"
            },
            {
              "version": "8ab58e8e7e097bae5fe39cbc67eb93a91f7134b7",
              "status": "affected",
              "versionType": "git",
              "lessThan": "ba1704316492a0496c69334338ea1fdbf4c2fd34"
            },
            {
              "version": "8ab58e8e7e097bae5fe39cbc67eb93a91f7134b7",
              "status": "affected",
              "versionType": "git",
              "lessThan": "bc78a4f51d548c1ccc3d1967c2b394bf687c86e9"
            },
            {
              "version": "8ab58e8e7e097bae5fe39cbc67eb93a91f7134b7",
              "status": "affected",
              "versionType": "git",
              "lessThan": "a63a5b6fb508d78fe57ae3b159d9ef3af7ba80e9"
            },
            {
              "version": "8ab58e8e7e097bae5fe39cbc67eb93a91f7134b7",
              "status": "affected",
              "versionType": "git",
              "lessThan": "4e85246ec0d019dfba86ba54d841ef6694f97149"
            },
            {
              "version": "8ab58e8e7e097bae5fe39cbc67eb93a91f7134b7",
              "status": "affected",
              "versionType": "git",
              "lessThan": "de5fc93275a4a459fe2f7cb746984f2ab3e8292a"
            },
            {
              "version": "8ab58e8e7e097bae5fe39cbc67eb93a91f7134b7",
              "status": "affected",
              "versionType": "git",
              "lessThan": "293125536ef5521328815fa7c76d5f9eb1635659"
            },
            {
              "version": "8ab58e8e7e097bae5fe39cbc67eb93a91f7134b7",
              "status": "affected",
              "versionType": "git",
              "lessThan": "8f067aa59430266386b83c18b983ca583faa6a11"
            }
          ]
        },
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "affected",
          "versions": [
            {
              "version": "3.17",
              "status": "affected"
            },
            {
              "version": "0",
              "status": "unaffected",
              "versionType": "semver",
              "lessThan": "3.17"
            },
            {
              "version": "5.4.302",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "5.4.*"
            },
            {
              "version": "5.10.247",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "5.10.*"
            },
            {
              "version": "5.15.197",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "5.15.*"
            },
            {
              "version": "6.1.159",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.1.*"
            },
            {
              "version": "6.6.117",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.6.*"
            },
            {
              "version": "6.12.58",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.12.*"
            },
            {
              "version": "6.17.8",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.17.*"
            },
            {
              "version": "6.18",
              "status": "unaffected",
              "versionType": "original_commit_for_fix",
              "lessThanOrEqual": "*"
            }
          ]
        }
      ]
    }
  }
}