Published Apr 24, 2026Sources checked Nov 12, 2026
5.5MEDIUMCVSS out of 10
What this means
Review the available evidence
CVE-2026-31549 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: Sep 25, 2026
Release Notes
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-2026-31549?
In the Linux kernel, the following vulnerability has been resolved:
i2c: cp2615: fix serial string NULL-deref at probe
The cp2615 driver uses the USB device serial string as the i2c adapter name but does not make sure that the string exists.
Verify that the device has a serial number before accessing it to avoid triggering a NULL-pointer dereference (e.g. with malicious devices).