CVE-2025-39882
Full vulnerability record from the local CVENow database.
Description
In the Linux kernel, the following vulnerability has been resolved: drm/mediatek: fix potential OF node use-after-free The for_each_child_of_node() helper drops the reference it takes to each node as it iterates over children and an explicit of_node_put() is only needed when exiting the loop early. Drop the recently introduced bogus additional reference count decrement at each iteration that could potentially lead to a use-after-free.
Severity
HIGH
CVSS score
7.8
(v3.1)
Vulnerability status
Modified
Source identifier
416baaa9-dc9f-4396-8d5f-8c081fb06d67
Published
2025-09-23 06:15:47.947000
Last modified
2026-10-19 21:10:00.160000
View original CVE JSON
{
"id": "CVE-2025-39882",
"sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"published": "2025-09-23T06:15:47.947",
"lastModified": "2026-10-19T21:10:00.160",
"vulnStatus": "Modified",
"cveTags": [],
"descriptions": [
{
"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/mediatek: fix potential OF node use-after-free\n\nThe for_each_child_of_node() helper drops the reference it takes to each\nnode as it iterates over children and an explicit of_node_put() is only\nneeded when exiting the loop early.\n\nDrop the recently introduced bogus additional reference count decrement\nat each iteration that could potentially lead to a use-after-free."
},
{
"lang": "es",
"value": "En el kernel de Linux, la siguiente vulnerabilidad ha sido resuelta:\n\ndrm/mediatek: corrige potencial uso después de liberación de nodo OF\n\nLa función auxiliar for_each_child_of_node() libera la referencia que toma a cada nodo mientras itera sobre los hijos y una llamada explícita a of_node_put() solo es necesaria al salir del bucle prematuramente.\n\nEliminar el recientemente introducido decremento adicional erróneo del contador de referencias en cada iteración que podría conducir potencialmente a un uso después de liberación."
}
],
"affected": [
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"affectedData": [
{
"vendor": "Linux",
"product": "Linux",
"defaultStatus": "unaffected",
"programFiles": [
"drivers/gpu/drm/mediatek/mtk_drm_drv.c"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"versions": [
{
"version": "7d98166183d627c0b9daca7672b2191fae0f8a03",
"lessThan": "b2fbe0f9f80b9cfa1e06ddcf8b863d918394ef1d",
"versionType": "git",
"status": "affected"
},
{
"version": "31ce7c089b50c3d3056c37e0e25e7535e4428ae1",
"lessThan": "b58a26cdd4795c1ce6a80e38e9348885555dacd6",
"versionType": "git",
"status": "affected"
},
{
"version": "fae58d0155a979a8c414bbc12db09dd4b2f910d0",
"lessThan": "c4901802ed1ce859242e10af06e6a7752cba0497",
"versionType": "git",
"status": "affected"
},
{
"version": "1f403699c40f0806a707a9a6eed3b8904224021a",
"lessThan": "4de37a48b6b58faaded9eb765047cf0d8785ea18",
"versionType": "git",
"status": "affected"
}
]
},
{
"vendor": "Linux",
"product": "Linux",
"defaultStatus": "unaffected",
"programFiles": [
"drivers/gpu/drm/mediatek/mtk_drm_drv.c"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"versions": [
{
"version": "6.6.105",
"lessThan": "6.6.107",
"versionType": "semver",
"status": "affected"
},
{
"version": "6.12.45",
"lessThan": "6.12.48",
"versionType": "semver",
"status": "affected"
},
{
"version": "6.16.5",
"lessThan": "6.16.8",
"versionType": "semver",
"status": "affected"
}
]
}
]
}
],
"metrics": {
"cvssMetricV31": [
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"type": "Secondary",
"cvssData": {
"version": "3.1",
"vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
"baseScore": 8.4,
"baseSeverity": "HIGH",
"attackVector": "LOCAL",
"attackComplexity": "LOW",
"privilegesRequired": "NONE",
"userInteraction": "NONE",
"scope": "UNCHANGED",
"confidentialityImpact": "HIGH",
"integrityImpact": "HIGH",
"availabilityImpact": "HIGH"
},
"exploitabilityScore": 2.5,
"impactScore": 5.9
},
{
"source": "[email protected]",
"type": "Primary",
"cvssData": {
"version": "3.1",
"vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
"baseScore": 7.8,
"baseSeverity": "HIGH",
"attackVector": "LOCAL",
"attackComplexity": "LOW",
"privilegesRequired": "LOW",
"userInteraction": "NONE",
"scope": "UNCHANGED",
"confidentialityImpact": "HIGH",
"integrityImpact": "HIGH",
"availabilityImpact": "HIGH"
},
"exploitabilityScore": 1.8,
"impactScore": 5.9
},
{
"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"type": "Secondary",
"cvssData": {
"version": "3.1",
"vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
"baseScore": 7.8,
"baseSeverity": "HIGH",
"attackVector": "LOCAL",
"attackComplexity": "LOW",
"privilegesRequired": "LOW",
"userInteraction": "NONE",
"scope": "UNCHANGED",
"confidentialityImpact": "HIGH",
"integrityImpact": "HIGH",
"availabilityImpact": "HIGH"
},
"exploitabilityScore": 1.8,
"impactScore": 5.9
}
],
"ssvcV203": [
{
"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"ssvcData": {
"timestamp": "2026-01-14T19:25:43.286538Z",
"id": "CVE-2025-39882",
"options": [
{
"exploitation": "none"
},
{
"automatable": "no"
},
{
"technicalImpact": "total"
}
],
"role": "CISA Coordinator",
"version": "2.0.3"
}
}
]
},
"weaknesses": [
{
"source": "[email protected]",
"type": "Primary",
"description": [
{
"lang": "en",
"value": "CWE-416"
}
]
},
{
"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"type": "Secondary",
"description": [
{
"lang": "en",
"value": "CWE-416"
}
]
}
],
"configurations": [
{
"nodes": [
{
"operator": "OR",
"negate": false,
"cpeMatch": [
{
"vulnerable": true,
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionStartIncluding": "6.6.105",
"versionEndExcluding": "6.6.107",
"matchCriteriaId": "C7059167-0B11-467C-9F6D-8222BB30F40A"
},
{
"vulnerable": true,
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionStartIncluding": "6.12.45",
"versionEndExcluding": "6.12.48",
"matchCriteriaId": "4834C96E-5049-4D95-B247-49C037F71647"
},
{
"vulnerable": true,
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionStartIncluding": "6.16.5",
"versionEndExcluding": "6.16.8",
"matchCriteriaId": "EEAC17D4-932B-4C5C-A1F8-E6FB83B9580F"
},
{
"vulnerable": true,
"criteria": "cpe:2.3:o:linux:linux_kernel:6.17:rc4:*:*:*:*:*:*",
"matchCriteriaId": "340BEEA9-D70D-4290-B502-FBB1032353B1"
},
{
"vulnerable": true,
"criteria": "cpe:2.3:o:linux:linux_kernel:6.17:rc5:*:*:*:*:*:*",
"matchCriteriaId": "47E4C5C0-079F-4838-971B-8C503D48FCC2"
}
]
}
]
}
],
"references": [
{
"url": "https://git.kernel.org/stable/c/4de37a48b6b58faaded9eb765047cf0d8785ea18",
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"tags": [
"Patch"
]
},
{
"url": "https://git.kernel.org/stable/c/b2fbe0f9f80b9cfa1e06ddcf8b863d918394ef1d",
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"tags": [
"Patch"
]
},
{
"url": "https://git.kernel.org/stable/c/b58a26cdd4795c1ce6a80e38e9348885555dacd6",
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"tags": [
"Patch"
]
},
{
"url": "https://git.kernel.org/stable/c/c4901802ed1ce859242e10af06e6a7752cba0497",
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"tags": [
"Patch"
]
}
]
}