wifi: mt76: mt7996: fix MLD ID in MAC TXD and HIF TXP (CVE-2026-90376) | HOL Guard CVE

Unknown severity · Source severity not reportedCVE-2026-90376

wifi: mt76: mt7996: fix MLD ID in MAC TXD and HIF TXP

Answer in brief

CVE-2026-90376 records a Unknown severity vulnerability in wifi: mt76: mt7996: fix MLD ID in MAC TXD and HIF TXP. 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	>=d6f6b3a65660d183ef33f5a6582fd3b47174fe5a <5183b9f092fc0041618f38f895bd0ad860c26ca9 \|\| >=85cd5534a3f2ec93e7d88713a77df5b4255520df <0a951ff6704db7b46c3f6d03b77e6053122be8ab \|\| >=85cd5534a3f2ec93e7d88713a77df5b4255520df <ce35ecffc96e6d097d27b6fe30677a2cfe2e0461 \|\| >=6.18.33 <6.18.52	5183b9f092fc0041618f38f895bd0ad860c26ca9, 0a951ff6704db7b46c3f6d03b77e6053122be8ab, ce35ecffc96e6d097d27b6fe30677a2cfe2e0461, 6.18.52
Linux/Linuxgeneric	6.19	Not reported

Recommended response

Check inventory. Check lockfiles and deployed manifests for Linux/Linux, Linux/Linux.
Review the reported fix. Update Linux/Linux to 5183b9f092fc0041618f38f895bd0ad860c26ca9 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: mt7996: fix MLD ID in MAC TXD and HIF TXP Problem: MCU command timeout while the firmware state is normal, and the firmware keeps showing the error log "ERROR!! NO PAUSE...". Root cause: If the MLD_ID field in the TXD is neither the primary link id nor the secondary link id, it may lead to a firmware busy loop when the third link is in power saving mode. Remap frames directed to a third link to the primary link wcid. Since TX status events and txfree completions carry the wcid the firmware saw, use the remapped wcid for packet id tracking and non-AQL packet accounting as well, while the frame keeps its original link context for addressing, band and OMAC selection.

Quoted source text, attributed separately from HOL analysis.