{
    "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": "2026-06-16T19:58:39.666Z"
    },
    "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"
                                },
                                {
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                                    "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"
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        },
        "adp": [
            {
                "metrics": [
                    {
                        "other": {
                            "type": "ssvc",
                            "content": {
                                "timestamp": "2026-06-16T19:58:30.759747Z",
                                "id": "CVE-2025-40211",
                                "options": [
                                    {
                                        "Exploitation": "none"
                                    },
                                    {
                                        "Automatable": "no"
                                    },
                                    {
                                        "Technical Impact": "partial"
                                    }
                                ],
                                "role": "CISA Coordinator",
                                "version": "2.0.3"
                            }
                        }
                    }
                ],
                "title": "CISA ADP Vulnrichment",
                "providerMetadata": {
                    "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
                    "shortName": "CISA-ADP",
                    "dateUpdated": "2026-06-16T19:58:39.666Z"
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    }
}