What is RHSA-2026:25186?

RHSA-2026:25186 is a security advisory published by Red Hat Product Security with Critical severity. Red Hat Security Advisory: OpenShift Container Platform 4.21.20 bug fix and security update

Which CVE IDs does RHSA-2026:25186 cover?

RHSA-2026:25186 covers the following CVE IDs: CVE-2026-43037. Each CVE has its own detail page on EchelonGraph Pulse with the synthesized EG score.

What is the CVSS v3 score of RHSA-2026:25186?

RHSA-2026:25186 has a CVSS v3 base score of 8.8, published by Red Hat Product Security.

RHSA-2026:25186CriticalCVSS 8.8

Red Hat Security Advisory: OpenShift Container Platform 4.21.20 bug fix and security update

Vendor

Red Hat Product Security

Published

June 16, 2026

Last Modified

June 17, 2026

🔗 CVE IDs covered (1)

CVE-2026-43037 →

📋 Description

CVE-2026-43037 — kernel: ip6_tunnel: clear skb2->cb[] in ip4ip6_err()

🔗 References (5)

selfhttps://access.redhat.com/errata/RHSA-2026:25186
externalhttps://access.redhat.com/security/updates/classification/#critical
externalhttps://bugzilla.redhat.com/show_bug.cgi?id=2464351
externalhttps://issues.redhat.com/browse/OCPBUGS-77049
selfhttps://security.access.redhat.com/data/csaf/v2/advisories/2026/rhsa-2026_25186.json