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Review reviewHigh

CVE-2025-39882

Linux Linux, linux kernel

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.

CVSS
7.8
EPSS
0.14%
3.92% percentile
CISA KEV
Not listed
Published
2025.09.23
PRIORITY ASSESSMENT

Review review

The CVSS severity warrants an early asset and exposure review.

Known exploitationNot established by KEV
Exploit probability0.14%
Technical severityCVSS 7.8

Vulnerability overview

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.

Affected product and versions

Product
Linux Linux, linux kernel
Affected versions
>= 7d98166183d627c0b9daca7672b2191fae0f8a03 < b2fbe0f9f80b9cfa1e06ddcf8b863d918394ef1d, >= 31ce7c089b50c3d3056c37e0e25e7535e4428ae1 < b58a26cdd4795c1ce6a80e38e9348885555dacd6, >= fae58d0155a979a8c414bbc12db09dd4b2f910d0 < c4901802ed1ce859242e10af06e6a7752cba0497, >= 1f403699c40f0806a707a9a6eed3b8904224021a < 4de37a48b6b58faaded9eb765047cf0d8785ea18, >= 6.6.105 < 6.6.107, >= 6.12.45 < 6.12.48, >= 6.16.5 < 6.16.8, 6.17
Fixed versions
6.6.107, 6.12.48, 6.16.8

Recommended response sequence

Confirm exposure before applying a vendor-supported change.

Full remediation guide
  1. 1
    Identify

    Confirm that Linux Linux, linux kernel and an affected version are present.

  2. 2
    Prioritize

    Combine exploitation signals with asset exposure and business criticality.

  3. 3
    Remediate

    Follow the vendor advisory or supported update path and preserve rollback options.

  4. 4
    Verify

    Recheck the version, service health, access paths, and relevant logs.

Technical data

CVSS vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CWE
CWE-416