CVE intelligence

CVE-2026-74273

Vulnerability intelligence

Published Aug 15, 2026Sources checked Oct 8, 2026

N/ACVSS not listedScore unavailable

What this means

Review the available evidence

CVE-2026-74273. It is not in the current CISA KEV record we collected. That does not prove exploitation has not occurred.

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-2026-74273?

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

cxl/region: Block region delete during region creation

Expand the range lock, rename it "regions_lock", to disable region deletion in the critical period between construct_region() and attach_target(), as well as the period between device_add() and registering the remove actions.

Otherwise, userspace can confuse the kernel. It can violate the assumption the region stays registered through the completion of cxl_add_to_region().

It can violate the assumption that devm_add_action_or_reset() is working with a live 'struct cxl_region'.

It is ok for the region to disappear outside of those windows as that mirrors device hotplug flows where the proper locks are held.

Source: NVD