CVE-2025-40316: drm/mediatek: Fix device use-after-free on unbind

Deferred
AliasesUBUNTU-CVE-2025-40316DEBIAN-CVE-2025-40316
Published 08-12-2025Last modified 23-05-2026

Vulnerability summary

CVE-2025-40316 is a vulnerability in linux with no CVSS score yet. EPSS estimates a 0.19% chance of exploitation in the next 30 days, higher than 8.6% of scored vulnerabilities.

Priority
Insufficient evidence

No CVSS vector published; no exploitation reported by the 5 checked sources

Source freshness unavailable

How is this decided?
CVSS score
Not scored
010
No CVSS score recorded
EPSS score
0.19%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedNot listed by any tracked catalog.
RansomwareNot flaggedNo ransomware use recorded.
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 20 · Related 18
MGASA-2026-0017MGASA-2026-0018OPENSUSE-SU-2026:20145-1SUSE-SU-2026:0278-1SUSE-SU-2026:0281-1SUSE-SU-2026:0293-1

Timeline

  1. 08-12-2025
    PublishedVulnerability first disclosed.
  2. 23-05-2026
    Last modifiedVulnerability information updated.

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.

CVSS metrics

Risk metrics not yet published.

EPSS trend

Probability

0.19%

Chance of exploitation in the next 30 days

Percentile

9%

Versus all other CVEs

30-day change

No change 0.00 pp

From 0.19% on 04-10-2026

04-10-202603-11-2026

Known exploited

Compare KEV catalogs
CISA KEV

Not in the CISA KEV catalog.

ENISA CNW

Not in the ENISA CNW catalog.

CIRCL

Not in the CIRCL catalog.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

No weakness data has been published for this record.

Affected systems

Version check

Known conditions: not stated in public data.

Ubuntu95 products
  • linux< 6.17.0-14.14
  • linux-allwinner-5.19All versions (No fix recorded)
  • linux-aws< 6.17.0-1007.7
  • linux-aws-5.0All versions (No fix recorded)
  • linux-aws-5.11All versions (No fix recorded)
Debian1 product
  • linux< 6.12.63-1 | < 6.17.8-1
Linux1 product
  • linux≥ 7d98166183d627c0b9daca7672b2191fae0f8a03, < a5a896f8315de358a2932e2c23c42d550256046a | ≥ 31ce7c089b50c3d3056c37e0e25e7535e4428ae1, < 0142fe895986addf35885b43440718e567121155 | ≥ 1f403699c40f0806a707a9a6eed3b8904224021a, < 8ba827e09eb586e952d10e39406fa02d10bb591e | ≥ 1f403699c40f0806a707a9a6eed3b8904224021a, < 926d002e6d7e2f1fd5c1b53cf6208153ee7d380d | fae58d0155a979a8c414bbc12db09dd4b2f910d0 | ≥ 6.6.105, < 6.6.117 | ≥ 6.12.45, < 6.12.58 | ≥ 6.16.5, < 6.17 | 6.17

3 vendors · 97 products

References

13 links
Show all 13 references