CVE-2026-68306

kernel: wifi: mt76: mt7996: fix possible NULL-pointer deref in mt7996_mcu_sta_bfer_eht()

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Severity

Moderate

Red Hat Product Security

5.5

CVSS 3.1

Review impact separately from score.

Published · August 10, 2026

Updated · October 30, 2026

Description

A flaw was found in the Linux kernel's Wi-Fi subsystem, specifically within the mt76 driver for MediaTek mt7996 devices. This vulnerability occurs because the mt76_connac_get_eht_phy_cap routine can return a NULL pointer, which is not properly checked before being dereferenced. An attacker could potentially exploit this to cause a system crash, leading to a Denial of Service (DoS).

Statement

This issue affects MediaTek mt7996 Wi-Fi. EHT PHY capability pointer is not checked for NULL in mcu_sta_bfer_eht. Systems without mt7996 hardware are not affected.

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