CVE intelligence

CVE-2026-89597

Vulnerability intelligence

Published Sep 11, 2026Sources checked Oct 30, 2026

7.8HIGHCVSS out of 10

What this means

Review the available evidence

CVE-2026-89597 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 2, 2026

Release Notes

Vendor-listed releases

6.6.157.1-1

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-2026-89597?

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

fbdev: uvesafb: unregister connector callback on init failure

uvesafb_init() registers the v86d connector callback before registering the platform driver. If platform_driver_register() fails, the function returns the error directly and leaves the connector callback registered.

The later platform-device failure path already unregisters the callback. Add the same cleanup before the final return when platform-driver registration fails.

This issue was identified during our ongoing static-analysis research while reviewing kernel code.

Source: NVD