wifi: mt76: fix RXDMAD_C buffer recycling race

Answer in brief

CVE-2026-90371 records a Unknown severity vulnerability in wifi: mt76: fix RXDMAD_C buffer recycling race. 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	>=e50d4d710efd2dbc46965e9608bbb502bcfc5c99 <7ac05ed3a50e511c93f8506e555709a208dfce0a \|\| >=e50d4d710efd2dbc46965e9608bbb502bcfc5c99 <a273dc3b86a7d983d643827d3d3c795d55d8f632 \|\| >=e50d4d710efd2dbc46965e9608bbb502bcfc5c99 <e1f97c10a4ec2b9db69a134b757304399ca903ce	7ac05ed3a50e511c93f8506e555709a208dfce0a, a273dc3b86a7d983d643827d3d3c795d55d8f632, e1f97c10a4ec2b9db69a134b757304399ca903ce
Linux/Linuxgeneric	6.18	Not reported

Recommended response

Check inventory. Check lockfiles and deployed manifests for Linux/Linux, Linux/Linux.
Review the reported fix. Update Linux/Linux to 7ac05ed3a50e511c93f8506e555709a208dfce0a 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 RXDMAD_C buffer recycling race The RXDMAD_C buffers come from the RRO data queues' page pools, which are bound to a different NAPI, so the direct page-pool recycle used here could race the owning NAPI; take the non-direct path as is already done for WED RX queues.

Quoted source text, attributed separately from HOL analysis.