{"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": "2025-12-08T00:46:43.210Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2025-12-08T00:46:43.210Z"}, "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"}]}, {"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"}}}}

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{"cveTags": [], "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."}], "id": "CVE-2025-40316", "lastModified": "2025-12-08T18:26:19.900", "metrics": {}, "published": "2025-12-08T01:16:04.147", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/0142fe895986addf35885b43440718e567121155"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/8ba827e09eb586e952d10e39406fa02d10bb591e"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/926d002e6d7e2f1fd5c1b53cf6208153ee7d380d"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/a5a896f8315de358a2932e2c23c42d550256046a"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Awaiting Analysis"}

{"bugzilla": {"description": "kernel: drm/mediatek: Fix device use-after-free on unbind", "id": "2419849", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2419849"}, "csaw": false, "cvss3": {"cvss3_base_score": "5.5", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "status": "draft"}, "details": ["In the Linux kernel, the following vulnerability has been resolved:\ndrm/mediatek: Fix device use-after-free on unbind\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\").\nThis results in a reference imbalance on component bind() failures and\non unbind() which could lead to a user-after-free.\nMake sure to only drop the references after retrieving the driver data\nby effectively reverting the previous partial fix.\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."], "name": "CVE-2025-40316", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Not 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": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2025-12-08T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2025-40316\nhttps://nvd.nist.gov/vuln/detail/CVE-2025-40316\nhttps://lore.kernel.org/linux-cve-announce/2025120822-CVE-2025-40316-eeed@gregkh/T"], "threat_severity": "Moderate"}

{}