Linux Kernel up to 6.12.33/6.15.2 wifi mt7996_mmio_wed_init null pointer dereference

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CTI Interest Score
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5.5$0-$5k2.38

Summaryinfo

A vulnerability classified as critical has been found in Linux Kernel up to 6.12.33/6.15.2. Affected by this issue is the function mt7996_mmio_wed_init of the component wifi. Performing a manipulation results in null pointer dereference. This vulnerability was named CVE-2025-38156. There is no available exploit. It is recommended to upgrade the affected component.

Detailsinfo

A vulnerability, which was classified as critical, was found in Linux Kernel up to 6.12.33/6.15.2. This affects the function mt7996_mmio_wed_init of the component wifi. The manipulation with an unknown input leads to a null pointer dereference vulnerability. CWE is classifying the issue as CWE-476. A NULL pointer dereference occurs when the application dereferences a pointer that it expects to be valid, but is NULL, typically causing a crash or exit. This is going to have an impact on availability. The summary by CVE is:

In the Linux kernel, the following vulnerability has been resolved: wifi: mt76: mt7996: Fix null-ptr-deref in mt7996_mmio_wed_init() devm_ioremap() returns NULL on error. Currently, mt7996_mmio_wed_init() does not check for this case, which results in a NULL pointer dereference. Prevent null pointer dereference in mt7996_mmio_wed_init()

The advisory is shared at git.kernel.org. This vulnerability is uniquely identified as CVE-2025-38156 since 04/16/2025. Technical details are known, but no exploit is available.

The vulnerability scanner Nessus provides a plugin with the ID 265934 (Ubuntu 24.04 LTS / 25.04 : Linux kernel vulnerabilities (USN-7769-1)), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 6.12.34, 6.15.3 or 6.16-rc1 eliminates this vulnerability. Applying the patch 1072fc0ca1f8d0d5397d24853386876f937b8e63/af861c6dea2ef06845a5c7672999a06c06099735/8f30e2b059757d8711a823e4c9c023db62a1d171 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 (265934), EUVD (EUVD-2025-19788) and CERT Bund (WID-SEC-2025-1452). If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Affected

  • Google Container-Optimized OS
  • Debian Linux
  • Amazon Linux 2
  • Red Hat Enterprise Linux
  • Ubuntu Linux
  • SUSE Linux
  • Oracle Linux
  • IBM QRadar SIEM
  • SUSE openSUSE
  • RESF Rocky Linux
  • Dell Avamar
  • Open Source Linux Kernel
  • Dell NetWorker
  • 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: 5.6
VulDB Meta Temp Score: 5.5

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

NVD Base Score: 5.5
NVD Vector: 🔒

CVSSv2info

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

Exploitinginfo

Class: Null pointer dereference
CWE: CWE-476 / CWE-404
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: 265934
Nessus Name: Ubuntu 24.04 LTS / 25.04 : Linux kernel vulnerabilities (USN-7769-1)

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: Kernel 6.12.34/6.15.3/6.16-rc1
Patch: 1072fc0ca1f8d0d5397d24853386876f937b8e63/af861c6dea2ef06845a5c7672999a06c06099735/8f30e2b059757d8711a823e4c9c023db62a1d171

Timelineinfo

04/16/2025 CVE reserved
07/03/2025 +78 days Advisory disclosed
07/03/2025 +0 days VulDB entry created
04/18/2026 +289 days VulDB entry last update

Sourcesinfo

Vendor: kernel.org

Advisory: git.kernel.org
Status: Confirmed

CVE: CVE-2025-38156 (🔒)
GCVE (CVE): GCVE-0-2025-38156
GCVE (VulDB): GCVE-100-314733
EUVD: 🔒
CERT Bund: WID-SEC-2025-1452 - Linux Kernel: Mehrere Schwachstellen

Entryinfo

Created: 07/03/2025 12:12
Updated: 04/18/2026 09:37
Changes: 07/03/2025 12:12 (59), 07/03/2025 12:48 (1), 08/23/2025 21:43 (7), 09/21/2025 22:08 (1), 09/27/2025 23:07 (2), 11/09/2025 16:15 (1), 11/21/2025 05:49 (11), 12/06/2025 19:02 (1), 04/18/2026 09:37 (1)
Complete: 🔍
Cache ID: 216::103

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