{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2025-40316",
        "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "state": "PUBLISHED",
        "assignerShortName": "Linux",
        "dateReserved": "2025-04-16T07:20:57.186Z",
        "datePublished": "2025-12-08T00:46:43.210Z",
        "dateUpdated": "2026-05-23T16:02:05.577Z"
    },
    "containers": {
        "cna": {
            "providerMetadata": {
                "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
                "shortName": "Linux",
                "dateUpdated": "2026-05-23T16:02:05.577Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/mediatek: Fix device use-after-free on unbind\n\nA recent change fixed device reference leaks when looking up drm\nplatform device driver data during bind() but failed to remove a partial\nfix which had been added by commit 80805b62ea5b (\"drm/mediatek: Fix\nkobject put for component sub-drivers\").\n\nThis results in a reference imbalance on component bind() failures and\non unbind() which could lead to a user-after-free.\n\nMake sure to only drop the references after retrieving the driver data\nby effectively reverting the previous partial fix.\n\nNote that holding a reference to a device does not prevent its driver\ndata from going away so there is no point in keeping the reference."
                }
            ],
            "affected": [
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "unaffected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "drivers/gpu/drm/mediatek/mtk_drm_drv.c"
                    ],
                    "versions": [
                        {
                            "version": "7d98166183d627c0b9daca7672b2191fae0f8a03",
                            "lessThan": "a5a896f8315de358a2932e2c23c42d550256046a",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "31ce7c089b50c3d3056c37e0e25e7535e4428ae1",
                            "lessThan": "0142fe895986addf35885b43440718e567121155",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "1f403699c40f0806a707a9a6eed3b8904224021a",
                            "lessThan": "8ba827e09eb586e952d10e39406fa02d10bb591e",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "1f403699c40f0806a707a9a6eed3b8904224021a",
                            "lessThan": "926d002e6d7e2f1fd5c1b53cf6208153ee7d380d",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "fae58d0155a979a8c414bbc12db09dd4b2f910d0",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "6.6.105",
                            "lessThan": "6.6.117",
                            "status": "affected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.12.45",
                            "lessThan": "6.12.58",
                            "status": "affected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.16.5",
                            "lessThan": "6.17",
                            "status": "affected",
                            "versionType": "semver"
                        }
                    ]
                },
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "affected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "drivers/gpu/drm/mediatek/mtk_drm_drv.c"
                    ],
                    "versions": [
                        {
                            "version": "6.17",
                            "status": "affected"
                        },
                        {
                            "version": "0",
                            "lessThan": "6.17",
                            "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": "6.6.105",
                                    "versionEndExcluding": "6.6.117"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "6.12.45",
                                    "versionEndExcluding": "6.12.58"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "6.17",
                                    "versionEndExcluding": "6.17.8"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "6.17",
                                    "versionEndExcluding": "6.18"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "6.16.5"
                                }
                            ]
                        }
                    ]
                }
            ],
            "references": [
                {
                    "url": "https://git.kernel.org/stable/c/a5a896f8315de358a2932e2c23c42d550256046a"
                },
                {
                    "url": "https://git.kernel.org/stable/c/0142fe895986addf35885b43440718e567121155"
                },
                {
                    "url": "https://git.kernel.org/stable/c/8ba827e09eb586e952d10e39406fa02d10bb591e"
                },
                {
                    "url": "https://git.kernel.org/stable/c/926d002e6d7e2f1fd5c1b53cf6208153ee7d380d"
                }
            ],
            "title": "drm/mediatek: Fix device use-after-free on unbind",
            "x_generator": {
                "engine": "bippy-1.2.0"
            }
        }
    }
}