wifi: mt76: mt7996: do not attach hif2 WED when the main WED attach failed (CVE-2026-90351) | HOL Guard CVE

Unknown severity · Source severity not reportedCVE-2026-90351

wifi: mt76: mt7996: do not attach hif2 WED when the main WED attach failed

Answer in brief

CVE-2026-90351 records a Unknown severity vulnerability in wifi: mt76: mt7996: do not attach hif2 WED when the main WED attach failed. 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	>=83eafc9251d6d30574b629ac637c56d168fcbdd9 <76144da3c6184c7850631ad79d0600ac8bf7649a \|\| >=83eafc9251d6d30574b629ac637c56d168fcbdd9 <d566387df8306257d2f703a0d99fd9896400317e \|\| >=83eafc9251d6d30574b629ac637c56d168fcbdd9 <7c1924332e986019c6bcddf55c843361cccac73f	76144da3c6184c7850631ad79d0600ac8bf7649a, d566387df8306257d2f703a0d99fd9896400317e, 7c1924332e986019c6bcddf55c843361cccac73f
Linux/Linuxgeneric	6.8	Not reported

Recommended response

Check inventory. Check lockfiles and deployed manifests for Linux/Linux, Linux/Linux.
Review the reported fix. Update Linux/Linux to 76144da3c6184c7850631ad79d0600ac8bf7649a 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: do not attach hif2 WED when the main WED attach failed If the WED attach for the primary PCIe function fails, the probe path still attached wed_hif2 for the secondary function, leaving the device in an inconsistent half-WED configuration that crashes later. The hif2 call also re-enabled hwrro_mode, which the failed primary attach had just turned off. Skip the hif2 WED setup when the primary WED device is not active.

Quoted source text, attributed separately from HOL analysis.