wifi: mt76: fix non-AQL packet accounting for MLO stations (CVE-2026-90375) | HOL Guard CVE

Unknown severity · Source severity not reportedCVE-2026-90375

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

Answer in brief

CVE-2026-90375 records a Unknown severity vulnerability in wifi: mt76: fix non-AQL packet accounting for MLO stations. The current sources do not mark it as known exploited. The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Sep 17, 2026Updated Sep 17, 2026Source checked Sep 17, 2026First seen by HOL Sep 17, 2026Material review Sep 17, 2026

Upstream Advisory

Key facts

Risk: Unknown severitySource severity not reported
Exploitation: Not marked as known exploited
Affected software: 2 mapped packages or products
Fix availability: Available

Why this deserves its current priority

A CVSS score is not reported in the current record. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
Package	Affected range	Fixed version
Linux/Linuxgeneric	>=e1378e5228aaa1bf6bb253a379c7de1722a94e00 <f85f6933cc170155f1c7c2dffdd014965787c71b \|\| >=e1378e5228aaa1bf6bb253a379c7de1722a94e00 <fc7fae55255ccbde009232e84b102d2782a69ecf \|\| >=e1378e5228aaa1bf6bb253a379c7de1722a94e00 <186c957ac3325aefb982567ffdd3654b283688a7 \|\| >=e1378e5228aaa1bf6bb253a379c7de1722a94e00 <8ae659743ba936b22ecb4620815887728e2820d6	f85f6933cc170155f1c7c2dffdd014965787c71b, fc7fae55255ccbde009232e84b102d2782a69ecf, 186c957ac3325aefb982567ffdd3654b283688a7, 8ae659743ba936b22ecb4620815887728e2820d6
Linux/Linuxgeneric	5.10	Not reported

Recommended response

Check inventory. Check lockfiles and deployed manifests for Linux/Linux, Linux/Linux.
Review the reported fix. Update Linux/Linux to f85f6933cc170155f1c7c2dffdd014965787c71b if you use the affected versions. Test the change in a non-production environment first.

Evidence timeline and material changes

Published upstream
Sep 17, 2026
Evidence: source:cvelist:source_dates:source-dates:record
Source modified
Sep 17, 2026
Evidence: source:cvelist:source_dates:source-dates:record
First seen by HOL
Sep 17, 2026

Sources and claim methodology

Upstream source 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.

Quoted source text, attributed separately from HOL analysis.