Linux Kernel up to 6.17-rc5 mediatek for_each_child_of_node reference count

CVSS Meta Temp Score
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CTI Interest Score
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6.6$0-$5k0.00

Summaryinfo

A vulnerability identified as critical has been detected in Linux Kernel up to 6.17-rc5. The impacted element is the function for_each_child_of_node of the component mediatek. The manipulation leads to reference count. This vulnerability is uniquely identified as CVE-2025-39882. No exploit exists. You should upgrade the affected component.

Detailsinfo

A vulnerability was found in Linux Kernel up to 6.17-rc5 and classified as critical. This issue affects the function for_each_child_of_node of the component mediatek. The manipulation with an unknown input leads to a reference count vulnerability. Using CWE to declare the problem leads to CWE-911. The product uses a reference count to manage a resource, but it does not update or incorrectly updates the reference count. Impacted is availability. The summary by CVE is:

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.

It is possible to read the advisory at git.kernel.org. The identification of this vulnerability is CVE-2025-39882 since 04/16/2025. Technical details of the vulnerability are known, but there is no available exploit.

The vulnerability scanner Nessus provides a plugin with the ID 265874 (Linux Distros Unpatched Vulnerability : CVE-2025-39882), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 6.6.107, 6.12.48, 6.16.8, 6.17-rc4 or 6.17-rc6 eliminates this vulnerability. Applying the patch b2fbe0f9f80b9cfa1e06ddcf8b863d918394ef1d/b58a26cdd4795c1ce6a80e38e9348885555dacd6/c4901802ed1ce859242e10af06e6a7752cba0497/4de37a48b6b58faaded9eb765047cf0d8785ea18 is able to eliminate this problem. The bugfix is ready for download at git.kernel.org. The best possible mitigation is suggested to be upgrading to the latest version.

The vulnerability is also documented in the databases at Tenable (265874) and CERT Bund (WID-SEC-2025-2107). Be aware that VulDB is the high quality source for vulnerability data.

Affected

  • Google Container-Optimized OS
  • Debian Linux
  • Amazon Linux 2
  • Red Hat Enterprise Linux
  • Ubuntu Linux
  • SUSE Linux
  • Oracle Linux
  • SUSE openSUSE
  • Open Source Linux Kernel
  • RESF Rocky Linux
  • Dell Secure Connect Gateway
  • IBM QRadar SIEM
  • Dell NetWorker

Productinfo

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Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.7
VulDB Meta Temp Score: 6.6

VulDB Base Score: 5.7
VulDB Temp Score: 5.5
VulDB Vector: 🔒
VulDB Reliability: 🔍

NVD Base Score: 7.8
NVD Vector: 🔒

CVSSv2info

AVACAuCIA
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Reference count
CWE: CWE-911 / CWE-664
CAPEC: 🔒
ATT&CK: 🔒

Physical: Partially
Local: Yes
Remote: Partially

Availability: 🔒
Status: Not defined

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

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Nessus ID: 265874
Nessus Name: Linux Distros Unpatched Vulnerability : CVE-2025-39882

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: Kernel 6.6.107/6.12.48/6.16.8/6.17-rc4/6.17-rc6
Patch: b2fbe0f9f80b9cfa1e06ddcf8b863d918394ef1d/b58a26cdd4795c1ce6a80e38e9348885555dacd6/c4901802ed1ce859242e10af06e6a7752cba0497/4de37a48b6b58faaded9eb765047cf0d8785ea18

Timelineinfo

04/16/2025 CVE reserved
09/23/2025 +160 days Advisory disclosed
09/23/2025 +0 days VulDB entry created
02/16/2026 +146 days VulDB entry last update

Sourcesinfo

Vendor: kernel.org

Advisory: git.kernel.org
Status: Confirmed

CVE: CVE-2025-39882 (🔒)
GCVE (CVE): GCVE-0-2025-39882
GCVE (VulDB): GCVE-100-325607
CERT Bund: WID-SEC-2025-2107 - Linux Kernel: Mehrere Schwachstellen

Entryinfo

Created: 09/23/2025 08:37
Updated: 02/16/2026 09:39
Changes: 09/23/2025 08:37 (59), 09/28/2025 18:35 (2), 12/01/2025 19:25 (7), 12/13/2025 10:30 (11), 01/12/2026 04:53 (1), 02/09/2026 08:19 (1), 02/16/2026 09:39 (1)
Complete: 🔍
Cache ID: 216::103

Be aware that VulDB is the high quality source for vulnerability data.

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