CVE-2026-90375

/// Technical description

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

wifi: mt76: fix non-AQL packet accounting for MLO stations

__mt76_tx_queue_skb() overrides the wcid passed by the driver with

sta->drv_priv, so the wcid might incorrectly be changed after TX,

causing wcid->non_aql_packets to be counted on the wrong wcid. For

example, on the AP side, if a station's setup link is the 5G link and

the station uses 2G to transmit a frame, the value of non_aql_packets

is increased on the 5G wcid but decreased on the 2G wcid. Once the

inflated counter exceeds MT_MAX_NON_AQL_PKT, the TX scheduler

permanently refuses to service the station.

Drop the reassignment and account on the wcid used for transmission.

This also records the actual wcid in the queue entry.

/// Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

/// References