Red Hat Security Advisory

RHSA-2026:25186

OpenShift Container Platform 4.21.20 bug fix and security update

Released 2026-06-16 · Red Hat rating Critical · View on Red Hat →

Fixed in

Red Hat OpenShift Container Platform 4.21 rhcos-aarch64-4.21.9.6.202606101139-0, rhcos-ppc64le-4.21.9.6.202606101139-0, rhcos-s390x-4.21.9.6.202606101139-0 +1

Fixes 1 record

TI-2026-31217 CVE-2026-43037 · GHSA-p2wf-qj6m-x5fg

ip6_tunnel: clear skb2->cb[] in ip4ip6_err()

MEDIUM 50

In the Linux kernel, the following vulnerability has been resolved: ip6_tunnel: clear skb2->cb[] in ip4ip6_err() Oskar Kjos reported the following problem.

CVSS 3.1CRITICAL 9.8 Network No auth No interaction EPSS 0.00688 Published 2026-05-01 Partial fix · 5.10.253, 5.15.203 +6 CWE-121