Medium [CVE-2026-68306] Linux kernel: Wi-Fi mt76 driver NULL-pointer dereference leads to Denial of Service
This medium-severity Red Hat Linux advisory covers CVE-2026-68306.
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Summary
In the Linux kernel, the following vulnerability has been resolved: wifi: mt76: mt7996: fix possible NULL-pointer deref in mt7996_mcu_sta_bfer_eht() mt76_connac_get_eht_phy_cap routine can theoretically return NULL so check cap pointer before dereferencing it.
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). Red Hat severity: Moderate — CVSS 5.3 (CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H).
Weakness: CWE-476. Red Hat lists Red Hat Enterprise Linux 10; Red Hat Enterprise Linux 6; Red Hat Enterprise Linux 7; Red Hat Enterprise Linux 8; Red Hat Enterprise Linux 9; Red Hat Enterprise Linux for NVIDIA 26; Red Hat OpenShift Container Platform 4 as not affected.
Affected versions
No affected-version range was extracted from the source record. The vendor advisory is authoritative — check it before change work.
Official advisory · medium-confidence parse· fetched 1 hour ago·verify at source
Fixed versions
No fixed release is recorded yet. That does not prove no patch exists — confirm against the vendor advisory.
Official advisory · medium-confidence parse· fetched 1 hour ago·verify at source
Mitigation
The source record does not include mitigation steps. That is not a statement that no fix exists — read the vendor advisory below for the authoritative guidance.
Official advisory · medium-confidence parse· fetched 1 hour ago·verify at source
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