CVE-2025-39882: drm/mediatek: fix potential OF node use-after-free
Vulnerability summary
CVE-2025-39882 is a high (CVSS 8.4) Use After Free vulnerability in linux. EPSS estimates a 0.15% chance of exploitation in the next 30 days, higher than 4.6% of scored vulnerabilities.
Not severe (CVSS 8.4, local access); no exploitation reported by the 5 checked sources
Source freshness unavailable
How is this decided?Advisory lineage
Upstream 0 · Downstream 17 · Related 15Timeline
- 23-09-2025PublishedVulnerability first disclosed.
- 05-08-2026Last modifiedVulnerability information updated.
Description
In the Linux kernel, the following vulnerability has been resolved: drm/mediatek: fix potential OF node use-after-free The for_each_child_of_node() helper drops the reference it takes to each node as it iterates over children and an explicit of_node_put() is only needed when exiting the loop early. Drop the recently introduced bogus additional reference count decrement at each iteration that could potentially lead to a use-after-free.
CVSS metrics
4 scores · 4 sources · 1 version- OSV · UbuntuEcosystem advisory · calculated8.4HighCVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- OSV · DebianEcosystem advisory · calculated7.8HighCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:HDiffers
- NVDNIST7.8HighCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:HDiffers
EPSS trend
Probability
0.15%
Chance of exploitation in the next 30 days
Percentile
5%
Versus all other CVEs
30-day change
No change 0.00 pp
From 0.15% on 04-10-2026
Known exploited
Compare KEV catalogsNot in the CISA KEV catalog.
Not in the ENISA CNW catalog.
Not in the CIRCL catalog.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Known conditions: local access, no authentication, no user interaction (CVSS vector). Other conditions: not stated in public data.
Ubuntu84 products
- linux-allwinner-5.19All versions (No fix recorded)
- linux-aws-5.0All versions (No fix recorded)
- linux-aws-5.11All versions (No fix recorded)
- linux-aws-5.13All versions (No fix recorded)
- linux-aws-5.19All versions (No fix recorded)
Linux2 products
- linux≥ 7d98166183d627c0b9daca7672b2191fae0f8a03, < b2fbe0f9f80b9cfa1e06ddcf8b863d918394ef1d | ≥ 31ce7c089b50c3d3056c37e0e25e7535e4428ae1, < b58a26cdd4795c1ce6a80e38e9348885555dacd6 | ≥ fae58d0155a979a8c414bbc12db09dd4b2f910d0, < c4901802ed1ce859242e10af06e6a7752cba0497 | ≥ 1f403699c40f0806a707a9a6eed3b8904224021a, < 4de37a48b6b58faaded9eb765047cf0d8785ea18 | ≥ 6.6.105, < 6.6.107 | ≥ 6.12.45, < 6.12.48 | ≥ 6.16.5, < 6.16.8
- linux_kernel≥ 6.6.105, < 6.6.107 | ≥ 6.12.45, < 6.12.48 | ≥ 6.16.5, < 6.16.8 | 6.17:rc4 | 6.17:rc5
Debian1 product
- linux< 6.12.48-1 | < 6.16.8-1
3 vendors · 87 products