CVE intelligence

CVE-2026-90245

Vulnerability intelligence

Published Sep 17, 2026Sources checked Nov 11, 2026

N/ACVSS not listedScore unavailable

What this means

Review the available evidence

CVE-2026-90245. 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

6.6.157.1-1

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-2026-90245?

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

fbdev: kyro: Validate overlay viewport coordinates

The overlay viewport end coordinates are computed from the viewport origin and dimensions using 32-bit unsigned arithmetic. Large input values can cause these calculations to wrap around before the resulting coordinates are passed to SetOverlayViewPort().

SetOverlayViewPort() packs the viewport coordinates into 16-bit register fields. The X coordinates are additionally adjusted by +2 and +1 before being written.

Validate the coordinate calculations for 32-bit wraparound and ensure that the adjusted coordinates fit within their 16-bit register fields before calling SetOverlayViewPort().

Found by Linux Verification Center (linuxtesting.org) with SVACE.

Source: NVD