wifi: mt76: mt7921: validate CLC firmware records (CVE-2026-98159) | HOL Guard CVE

Unknown severity · Source severity not reportedCVE-2026-98159

wifi: mt76: mt7921: validate CLC firmware records

Answer in brief

CVE-2026-98159 records a Unknown severity vulnerability in wifi: mt76: mt7921: validate CLC firmware records. 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 25, 2026Updated Sep 25, 2026Source checked Sep 25, 2026First seen by HOL Sep 25, 2026Material review Sep 25, 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	>=23bdc5d8cadfc941e7782d0cb8afb2d9ae73b125 <602a950134ee2940136f60797e4457c3983b06ce \|\| >=23bdc5d8cadfc941e7782d0cb8afb2d9ae73b125 <3896be051e928c891922d91de94c99519d215dff \|\| >=23bdc5d8cadfc941e7782d0cb8afb2d9ae73b125 <3c505e2af16a9320f4355218394a955fbbc65322 \|\| >=23bdc5d8cadfc941e7782d0cb8afb2d9ae73b125 <9417c5818a0146980c2608fda94c908e604eb033	602a950134ee2940136f60797e4457c3983b06ce, 3896be051e928c891922d91de94c99519d215dff, 3c505e2af16a9320f4355218394a955fbbc65322, 9417c5818a0146980c2608fda94c908e604eb033
Linux/Linuxgeneric	6.1	Not reported

Recommended response

Check inventory. Check lockfiles and deployed manifests for Linux/Linux, Linux/Linux.
Review the reported fix. Update Linux/Linux to 602a950134ee2940136f60797e4457c3983b06ce if you use the affected versions. Test the change in a non-production environment first.

Evidence timeline and material changes

Published upstream
Sep 25, 2026
Evidence: source:cvelist:source_dates:source-dates:record
Source modified
Sep 25, 2026
Evidence: source:cvelist:source_dates:source-dates:record
First seen by HOL
Sep 25, 2026

Sources and claim methodology

Upstream source description

In the Linux kernel, the following vulnerability has been resolved: wifi: mt76: mt7921: validate CLC firmware records The CLC region is supplied by firmware, but the loader trusts the region count and each record length. A malformed image can make the region table pointer precede the firmware buffer, make the record loop fail to advance, or index phy->clc past its end. Validate the table and record bounds before dereferencing or copying.

Quoted source text, attributed separately from HOL analysis.