CVE-2025-40316

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.

The following products are affected by CVE-2025-40316 vulnerability.

Here, you will find a curated list of external links that provide in-depth information to CVE-2025-40316.

URL	Resource
https://git.kernel.org/stable/c/0142fe895986addf35885b43440718e567121155
https://git.kernel.org/stable/c/8ba827e09eb586e952d10e39406fa02d10bb591e
https://git.kernel.org/stable/c/926d002e6d7e2f1fd5c1b53cf6208153ee7d380d
https://git.kernel.org/stable/c/a5a896f8315de358a2932e2c23c42d550256046a
https://lore.kernel.org/linux-cve-announce/2025120822-CVE-2025-40316-eeed@gregkh/T
https://nvd.nist.gov/vuln/detail/CVE-2025-40316
https://www.cve.org/CVERecord?id=CVE-2025-40316