Published Sep 25, 2026Sources checked Nov 12, 2026
5.5MEDIUMCVSS out of 10
What this means
Review the available evidence
CVE-2026-98159 and is rated Medium severity with a CVSS score of 5.5. It is not in the current CISA KEV record we collected. That does not prove exploitation has not occurred.
What to do next
Remediation and response
Microsoft Security Response Center guidance
Vendor revision: Oct 21, 2026
Release Notes
Vendor-listed releases
6.6.158.1-1
CISA KEVNot listedBased on the latest collected catalog
EPSS0.1%Estimated 30-day exploitation probability
Ransomware useNot markedCISA KEV ransomware field
Threat actors0Source-linked actor relationships
Overview
What is CVE-2026-98159?
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.