CVE-2025-40316 (GCVE-0-2025-40316)

Vulnerability from cvelistv5 – Published: 2025-12-08 00:46 – Updated: 2026-05-23 16:02
VLAI
Title
drm/mediatek: Fix device use-after-free on unbind
Summary
In the Linux kernel, the following vulnerability has been resolved: drm/mediatek: Fix device use-after-free on unbind A recent change fixed device reference leaks when looking up drm platform device driver data during bind() but failed to remove a partial fix which had been added by commit 80805b62ea5b ("drm/mediatek: Fix kobject put for component sub-drivers"). This results in a reference imbalance on component bind() failures and on unbind() which could lead to a user-after-free. Make sure to only drop the references after retrieving the driver data by effectively reverting the previous partial fix. Note that holding a reference to a device does not prevent its driver data from going away so there is no point in keeping the reference.
Severity
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: 7d98166183d627c0b9daca7672b2191fae0f8a03 , < a5a896f8315de358a2932e2c23c42d550256046a (git)
Affected: 31ce7c089b50c3d3056c37e0e25e7535e4428ae1 , < 0142fe895986addf35885b43440718e567121155 (git)
Affected: 1f403699c40f0806a707a9a6eed3b8904224021a , < 8ba827e09eb586e952d10e39406fa02d10bb591e (git)
Affected: 1f403699c40f0806a707a9a6eed3b8904224021a , < 926d002e6d7e2f1fd5c1b53cf6208153ee7d380d (git)
Affected: fae58d0155a979a8c414bbc12db09dd4b2f910d0 (git)
Affected: 6.6.105 , < 6.6.117 (semver)
Affected: 6.12.45 , < 6.12.58 (semver)
Affected: 6.16.5 , < 6.17 (semver)
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Linux Linux Affected: 6.17
Unaffected: 0 , < 6.17 (semver)
Unaffected: 6.6.117 , ≤ 6.6.* (semver)
Unaffected: 6.12.58 , ≤ 6.12.* (semver)
Unaffected: 6.17.8 , ≤ 6.17.* (semver)
Unaffected: 6.18 , ≤ * (original_commit_for_fix)
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    "dateReserved": "2025-04-16T07:20:57.186Z",
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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

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Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
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  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



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