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Unrated severityNVD Advisory· Published Dec 8, 2025· Updated Apr 15, 2026

CVE-2025-40316

CVE-2025-40316

Description

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.

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Affected products

104

Patches

Vulnerability mechanics

References

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CVE-2025-40316 · VYPR