CVE-2026-89885
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Received - Intake
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Vulnerability report for CVE-2026-89885, including description, CVSS score, EPSS score, affected products, exploitability, helpful resources, and attack-flow context.
Publication date: 2026-09-16
Last updated on: 2026-09-16
Assigner: kernel.org
Description
Description
In the Linux kernel, the following vulnerability has been resolved:
media: platform: mtk-mdp3: Fix SCP device refcounting
mdp_probe() first tries to get the SCP handle with scp_get(). When that
fails, it falls back to looking up the SCP platform device with
__get_pdev_by_id() and then reads its driver data.
The fallback lookup returns the platform device with a reference, just
like scp_get() does. However, the fallback path currently drops that
reference immediately after platform_get_drvdata(). The driver later
still calls scp_put(mdp->scp) unconditionally from the probe error path
and from mdp_video_device_release(), which drops the SCP device
reference again.
Keep the fallback reference until the existing scp_put() call, so that
the fallback path follows the same ownership rules as the scp_get()
path.
CVSS Scores
EPSS Scores
| Probability: | |
| Percentile: |
Meta Information
Affected Vendors & Products
| Vendor | Product | Version / Range |
|---|---|---|
| Linux | Linux | db4d27e6bbbf511f9cdb33f682535a0a3cb7c403 |
| Linux | Linux | 31ba1a4d7a5d9466f6ef4910a372b8200f8aad19 |
| Linux | Linux | 8f6f3aa21517ef34d50808af0c572e69580dca20 |
| Linux | Linux | 8f6f3aa21517ef34d50808af0c572e69580dca20 |
| Linux | Linux | 6.12.64 |
| Linux | Linux | 6.18.4 |
| Linux | Linux | 6.19 |
Helpful Resources
Exploitability
CWE
KEV
| CWE ID | Description |
|---|---|
| CWE-UNKNOWN |
