Linux Kernel up to 6.16.5 wifi privilege escalation

CVSS Meta Temp Score
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CTI Interest Score
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5.4$0-$5k0.00

Summaryinfo

A vulnerability was found in Linux Kernel up to 6.16.5. It has been classified as critical. This affects an unknown function of the component wifi. Performing a manipulation results in an unknown weakness. This vulnerability is cataloged as CVE-2025-39919. There is no exploit available. Upgrading the affected component is recommended.

Detailsinfo

A vulnerability was found in Linux Kernel up to 6.16.5. It has been classified as critical. This affects an unknown code block of the component wifi. The impact remains unknown. The summary by CVE is:

In the Linux kernel, the following vulnerability has been resolved: wifi: mt76: mt7996: add missing check for rx wcid entries Non-station wcid entries must not be passed to the rx functions. In case of the global wcid entry, it could even lead to corruption in the wcid array due to pointer being casted to struct mt7996_sta_link using container_of.

It is possible to read the advisory at git.kernel.org. This vulnerability is uniquely identified as CVE-2025-39919 since 04/16/2025. The technical details are unknown and an exploit is not publicly available. The pricing for an exploit might be around USD $0-$5k at the moment (estimation calculated on 01/08/2026).

The vulnerability scanner Nessus provides a plugin with the ID 269668 (Linux Distros Unpatched Vulnerability : CVE-2025-39919), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 6.16.6 eliminates this vulnerability. Applying the patch 69dcc19048fcdc3fb166fd25b805470ee8fc0eb1/4a522b01e368eec58d182ecc47d24f49a39e440d 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 (269668), EUVD (EUVD-2025-31832) and CERT Bund (WID-SEC-2025-2170). Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Affected

  • Debian Linux
  • Amazon Linux 2
  • Red Hat Enterprise Linux
  • Ubuntu Linux
  • SUSE Linux
  • Oracle Linux
  • SUSE openSUSE
  • RESF Rocky Linux
  • Open Source Linux Kernel
  • Dell Secure Connect Gateway

Productinfo

Type

Vendor

Name

Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.5
VulDB Meta Temp Score: 5.4

VulDB Base Score: 5.5
VulDB Temp Score: 5.3
VulDB Vector: 🔒
VulDB Reliability: 🔍

NVD Base Score: 5.5
NVD Vector: 🔒

CVSSv2info

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

Exploitinginfo

Class: Privilege escalation
CWE: Unknown
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: 269668
Nessus Name: Linux Distros Unpatched Vulnerability : CVE-2025-39919

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: Kernel 6.16.6
Patch: 69dcc19048fcdc3fb166fd25b805470ee8fc0eb1/4a522b01e368eec58d182ecc47d24f49a39e440d

Timelineinfo

04/16/2025 CVE reserved
10/01/2025 +168 days Advisory disclosed
10/01/2025 +0 days VulDB entry created
01/08/2026 +99 days VulDB entry last update

Sourcesinfo

Vendor: kernel.org

Advisory: git.kernel.org
Status: Confirmed

CVE: CVE-2025-39919 (🔒)
GCVE (CVE): GCVE-0-2025-39919
GCVE (VulDB): GCVE-100-326499
EUVD: 🔒
CERT Bund: WID-SEC-2025-2170 - Linux Kernel: Mehrere Schwachstellen

Entryinfo

Created: 10/01/2025 10:26
Updated: 01/08/2026 19:33
Changes: 10/01/2025 10:26 (57), 10/01/2025 13:49 (1), 10/01/2025 21:26 (7), 10/10/2025 15:22 (2), 11/25/2025 06:18 (1), 12/01/2025 18:54 (1), 12/12/2025 02:26 (10), 01/08/2026 19:33 (1)
Complete: 🔍
Cache ID: 216::103

Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

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