CVE intelligence

CVE-2026-98944

Vulnerability intelligence

Published Oct 23, 2026Sources checked Oct 27, 2026

7.8HIGHCVSS out of 10

What this means

Review the available evidence

CVE-2026-98944 and is rated High severity with a CVSS score of 7.8. 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 26, 2026

Release Notes

CISA KEVNot listedBased on the latest collected catalog

EPSS0.2%Estimated 30-day exploitation probability

Ransomware useNot markedCISA KEV ransomware field

Threat actors0Source-linked actor relationships

Overview

What is CVE-2026-98944?

In the Linux kernel, the following vulnerability has been resolved:

HID: steam: Refactor registration

This refactors and simplifies the registration/unregistration flow. Since we now only perform registration when the client isn't opened anymore, the logic for handling that can be removed, and the rest of the function streamlined.

We also remove the previous assumption that we have a serial number to show we're registered, replacing it with a single purpose boolean.

In a previous refactor the code for unregistering a battery if later registration steps failed was accidentally left out. As a result, a lingering power_supply object could get left over after the steam object was torn down.

This is also fixed here.

Source: NVD