CVE-2026-80632
Received Received - Intake

NULL Pointer Dereference in Linux Kernel MT76 WiFi Driver

Publication date: 2026-08-28

Last updated on: 2026-08-28

Assigner: kernel.org

Description
In the Linux kernel, the following vulnerability has been resolved: wifi: mt76: mt7996: Fix NULL pointer dereference in mt7996_init_tx_queues() When MT76_NPU and CONFIG_NET_MEDIATEK_SOC_WED are enabled and mt76 detects properly the Airoha NPU SoC, mt7996_init_tx_queues() will dereference a NULL WED pointer. Fix the issue by always passing the WED pointer from mt7996_dma_init().

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Meta Information

Published
2026-08-28
Last Modified
2026-08-28
Generated
2026-09-17
AI Q&A
2026-08-28
EPSS Evaluated
2026-09-15
NVD
CVE-2026-80632
EUVD
EUVD-2026-67508

Affected Vendors & Products

Showing 1 associated CPE
Vendor Product Version / Range
linux linux_kernel *

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Exploitability

CWE
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KEV
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CWE ID Description
CWE-UNKNOWN

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Executive Summary

This is a NULL pointer dereference vulnerability in the Linux kernel's mt76 WiFi driver, specifically affecting the mt7996 chipset. It occurs when MT76_NPU and CONFIG_NET_MEDIATEK_SOC_WED are enabled and the Airoha NPU SoC is detected. The function mt7996_init_tx_queues() tries to access a NULL WED pointer, leading to a crash or potential code execution.

Detection Guidance

This vulnerability is specific to Linux kernel configurations with MT76_NPU and CONFIG_NET_MEDIATEK_SOC_WED enabled. Detection requires checking kernel logs for NULL pointer dereference errors in mt7996_init_tx_queues() during WiFi initialization. Use dmesg | grep mt7996 or journalctl -k | grep mt7996 to search for related errors.

Impact Analysis

If you use a system with a MediaTek MT7996 WiFi chipset and have the vulnerable kernel configuration enabled, this flaw could cause system instability, crashes, or even arbitrary code execution. It may lead to denial of service or unauthorized access depending on the attacker's capabilities.

Compliance Impact

This vulnerability is a NULL pointer dereference in the Linux kernel's WiFi driver (mt76) affecting the mt7996 chipset. It does not directly relate to data handling, storage, or privacy controls required by GDPR or HIPAA. Compliance impact would depend on whether the affected system processes regulated data, but the vulnerability itself is not a direct violation of these standards.

Mitigation Strategies

Update the Linux kernel to a patched version where the fix for CVE-2026-80632 is included. Disable the MT76_NPU and CONFIG_NET_MEDIATEK_SOC_WED options if not required.

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