CVE-2025-40316

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Source
https://cve.org/CVERecord?id=CVE-2025-40316
Import Source
https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2025-40316.json
JSON Data
https://api.test.osv.dev/v1/vulns/CVE-2025-40316
Downstream
Related
Published
2025-12-08T00:46:43.210Z
Modified
2026-03-20T12:43:15.786642Z
Summary
drm/mediatek: Fix device use-after-free on unbind
Details

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.

Database specific 
{
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/40xxx/CVE-2025-40316.json"
}
References

Affected packages

Git / git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git

Affected ranges

Type
GIT
Repo
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Events
Introduced
7d98166183d627c0b9daca7672b2191fae0f8a03
Fixed
a5a896f8315de358a2932e2c23c42d550256046a
Type
GIT
Repo
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Events
Introduced
31ce7c089b50c3d3056c37e0e25e7535e4428ae1
Fixed
0142fe895986addf35885b43440718e567121155
Type
GIT
Repo
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Events
Introduced
1f403699c40f0806a707a9a6eed3b8904224021a
Fixed
8ba827e09eb586e952d10e39406fa02d10bb591e
Fixed
926d002e6d7e2f1fd5c1b53cf6208153ee7d380d
Type
GIT
Repo
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Last affected
fae58d0155a979a8c414bbc12db09dd4b2f910d0

Database specific

source 
"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2025-40316.json"

Linux / Kernel

Package

Name
Kernel

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
6.6.117
Type
ECOSYSTEM
Events
Introduced
6.7.0
Fixed
6.12.58
Type
ECOSYSTEM
Events
Introduced
6.13.0
Fixed
6.17.8

Database specific

source 
"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2025-40316.json"