{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2025-40211", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2025-04-16T07:20:57.179Z", "datePublished": "2025-11-21T10:21:36.438Z", "dateUpdated": "2026-05-11T21:44:54.867Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-05-11T21:44:54.867Z"}, "descriptions": [{"lang": "en", "value": "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": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/acpi/acpi_video.c"], "versions": [{"version": "8ab58e8e7e097bae5fe39cbc67eb93a91f7134b7", "lessThan": "3f803ccf5a0c043e7c8b83f6665b082401fc8bee", "status": "affected", "versionType": "git"}, {"version": "8ab58e8e7e097bae5fe39cbc67eb93a91f7134b7", "lessThan": "ba1704316492a0496c69334338ea1fdbf4c2fd34", "status": "affected", "versionType": "git"}, {"version": "8ab58e8e7e097bae5fe39cbc67eb93a91f7134b7", "lessThan": "bc78a4f51d548c1ccc3d1967c2b394bf687c86e9", "status": "affected", "versionType": "git"}, {"version": "8ab58e8e7e097bae5fe39cbc67eb93a91f7134b7", "lessThan": "a63a5b6fb508d78fe57ae3b159d9ef3af7ba80e9", "status": "affected", "versionType": "git"}, {"version": "8ab58e8e7e097bae5fe39cbc67eb93a91f7134b7", "lessThan": "4e85246ec0d019dfba86ba54d841ef6694f97149", "status": "affected", "versionType": "git"}, {"version": "8ab58e8e7e097bae5fe39cbc67eb93a91f7134b7", "lessThan": "de5fc93275a4a459fe2f7cb746984f2ab3e8292a", "status": "affected", "versionType": "git"}, {"version": "8ab58e8e7e097bae5fe39cbc67eb93a91f7134b7", "lessThan": "293125536ef5521328815fa7c76d5f9eb1635659", "status": "affected", "versionType": "git"}, {"version": "8ab58e8e7e097bae5fe39cbc67eb93a91f7134b7", "lessThan": "8f067aa59430266386b83c18b983ca583faa6a11", "status": "affected", "versionType": "git"}]}, {"product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/acpi/acpi_video.c"], "versions": [{"version": "3.17", "status": "affected"}, {"version": "0", "lessThan": "3.17", "status": "unaffected", "versionType": "semver"}, {"version": "5.4.302", "lessThanOrEqual": "5.4.*", "status": "unaffected", "versionType": "semver"}, {"version": "5.10.247", "lessThanOrEqual": "5.10.*", "status": "unaffected", "versionType": "semver"}, {"version": "5.15.197", "lessThanOrEqual": "5.15.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.1.159", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.6.117", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.12.58", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.17.8", "lessThanOrEqual": "6.17.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.18", "lessThanOrEqual": "*", "status": "unaffected", "versionType": "original_commit_for_fix"}]}], "cpeApplicability": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.17", "versionEndExcluding": "5.4.302"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.17", "versionEndExcluding": "5.10.247"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.17", "versionEndExcluding": "5.15.197"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.17", "versionEndExcluding": "6.1.159"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.17", "versionEndExcluding": "6.6.117"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.17", "versionEndExcluding": "6.12.58"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.17", "versionEndExcluding": "6.17.8"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "3.17", "versionEndExcluding": "6.18"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/3f803ccf5a0c043e7c8b83f6665b082401fc8bee"}, {"url": "https://git.kernel.org/stable/c/ba1704316492a0496c69334338ea1fdbf4c2fd34"}, {"url": "https://git.kernel.org/stable/c/bc78a4f51d548c1ccc3d1967c2b394bf687c86e9"}, {"url": "https://git.kernel.org/stable/c/a63a5b6fb508d78fe57ae3b159d9ef3af7ba80e9"}, {"url": "https://git.kernel.org/stable/c/4e85246ec0d019dfba86ba54d841ef6694f97149"}, {"url": "https://git.kernel.org/stable/c/de5fc93275a4a459fe2f7cb746984f2ab3e8292a"}, {"url": "https://git.kernel.org/stable/c/293125536ef5521328815fa7c76d5f9eb1635659"}, {"url": "https://git.kernel.org/stable/c/8f067aa59430266386b83c18b983ca583faa6a11"}], "title": "ACPI: video: Fix use-after-free in acpi_video_switch_brightness()", "x_generator": {"engine": "bippy-1.2.0"}}}}

{}

{"cveTags": [], "descriptions": [{"lang": "en", "value": "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 ]"}], "id": "CVE-2025-40211", "lastModified": "2026-04-15T00:35:42.020", "metrics": {}, "published": "2025-11-21T11:15:49.513", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/293125536ef5521328815fa7c76d5f9eb1635659"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/3f803ccf5a0c043e7c8b83f6665b082401fc8bee"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/4e85246ec0d019dfba86ba54d841ef6694f97149"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/8f067aa59430266386b83c18b983ca583faa6a11"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/a63a5b6fb508d78fe57ae3b159d9ef3af7ba80e9"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/ba1704316492a0496c69334338ea1fdbf4c2fd34"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/bc78a4f51d548c1ccc3d1967c2b394bf687c86e9"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/de5fc93275a4a459fe2f7cb746984f2ab3e8292a"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Deferred"}

{"bugzilla": {"description": "kernel: ACPI: video: Fix use-after-free in acpi_video_switch_brightness()", "id": "2416309", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2416309"}, "csaw": false, "cvss3": {"cvss3_base_score": "7.0", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H", "status": "draft"}, "details": ["No description is available for this CVE."], "name": "CVE-2025-40211", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 10"}, {"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2025-11-21T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2025-40211\nhttps://nvd.nist.gov/vuln/detail/CVE-2025-40211\nhttps://lore.kernel.org/linux-cve-announce/2025112140-CVE-2025-40211-465b@gregkh/T"], "threat_severity": "Moderate"}

{}