CVE-2026-31431 Mitigation for Managed OpenShift (Zero-Reboot BPF LSM DaemonSet)

Solution Verified - Updated -

Issue

All OpenShift clusters are confirmed to be affected by CVE-2026-31431 ("Copy Fail"), which has been classified as an important vulnerability.

Red Hat is developing a fix for the CVE that will be released in z-streams for OpenShift 4.16, 4.18, 4.19, 4.20, and 4.21. Until the fix is released, a mitigation can be applied to the cluster to disable the affected component.

Environment

  • Red Hat OpenShift Service on AWS (ROSA Classic)
    • 4
  • Red Hat OpenShift on AWS with Hosted Control Plane (ROSA HCP)
    • 4
  • Azure Red Hat OpenShift (ARO)
    • 4
  • Red Hat OpenShift Dedicated (OSD)
    • 4

Subscriber exclusive content

A Red Hat subscription provides unlimited access to our knowledgebase, tools, and much more.

Current Customers and Partners

Log in for full access

Log In

New to Red Hat?

Learn more about Red Hat subscriptions

Using a Red Hat product through a public cloud?

How to access this content