Linux Kernel Wi-Fi subsystem Vulnerability Rated 7.8 CVSS

Status: UPDATED  |  Advisory ID: CVE-2026-74367

Key Details

Affected Products, Subsystems & Sectors

What to Know

In the Linux kernel, the following vulnerability has been resolved:

wifi: ath12k: fix inconsistent arvif state in vdev_create error paths

ath12k_mac_vdev_create() has three error path issues that leave arvif

in an inconsistent state:

1. When ath12k_wmi_vdev_create() fails, the function returns directly

without clearing arvif->ar, which was already set before the WMI

call. Subsequent code checking arvif->ar to determine vdev readiness

will see a non-NULL value despite no vdev existing in firmware.

2. When ath12k_wmi_send_peer_delete_cmd() fails in err_peer_del, the

code jumped to err: skipping the DP peer cleanup and vdev rollback,

leaving num_created_vdevs, vdev maps and arvif list membership live.

3. When ath12k_wait_for_peer_delete_done() fails, the code jumped to

err_vdev_del: skipping the DP peer cleanup.

Fix by changing the ath12k_wmi_vdev_create() failure to goto err instead

of returning directly, routing both err_peer_del failure paths through

err_dp_peer_del: for proper DP peer and vdev rollback, and consolidating

the arvif state cleanup at err:.

Tested-on: WCN7850 hw2.0 PCI WLAN.HMT.1.1.c5-00302-QCAHMTSWPL_V1.0_V2.0_SILICONZ-1.115823.3 (NVD)

What to Do

Monitor Linux's web page for any future patch releases.

References