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CVE-2026-80632

kernel: wifi: mt76: mt7996: Fix NULL pointer dereference in mt7996_init_tx_queues()

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Severity

Moderate

Red Hat Product Security

5.5

CVSS 3.1

Review impact separately from score.

Published · August 28, 2026

Updated · October 18, 2026

Description

A flaw was found in the Linux kernel's Wi-Fi driver, specifically within the mt7996 component. When the MT76_NPU and CONFIG_NET_MEDIATEK_SOC_WED configurations are enabled and the Airoha NPU System-on-Chip (SoC) is detected, the mt7996_init_tx_queues() function can attempt to dereference a NULL Wi-Fi/Ethernet Dispatcher (WED) pointer. This improper handling of the WED pointer during initialization can lead to system instability or a denial of service.

Statement

A moderate-impact NULL pointer dereference flaw was found in the Linux kernel's mt76 mt7996 Wi-Fi driver. When the MT76_NPU and CONFIG_NET_MEDIATEK_SOC_WED configuration options are enabled and the driver detects an Airoha NPU system-on-chip (SoC), the mt7996_init_tx_queues() function dereferences a NULL Wireless Ethernet Dispatcher (WED) pointer during transmit queue initialization, which can cause a kernel panic and result in a denial of service. The impact to Red Hat is rated Moderate (CVSS 5.5, CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H). All Red Hat Enterprise Linux and Red Hat In-Vehicle OS streams are marked not affected for this flaw because the vulnerable code is not present in the shipped Red Hat kernels.

CVSS score applicability

The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.

Mitigation

No mitigation is specified in collected source.

CVSS / CWE

CVSS 3.1 · 5.5
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

CWE-476 · NULL Pointer Dereference