What is RHSA-2026:40779?

RHSA-2026:40779 is a security advisory published by Red Hat Product Security with High severity. Red Hat Security Advisory: OpenShift Container Platform 4.21.25 bug fix and security update

Which CVE IDs does RHSA-2026:40779 cover?

RHSA-2026:40779 covers the following CVE IDs: CVE-2026-46242, CVE-2026-46316, CVE-2026-53359. Each CVE has its own detail page on EchelonGraph Pulse with the synthesized EG score.

What is the CVSS v3 score of RHSA-2026:40779?

RHSA-2026:40779 has a CVSS v3 base score of 7.8, published by Red Hat Product Security.

RHSA-2026:40779HighCVSS 7.8

Red Hat Security Advisory: OpenShift Container Platform 4.21.25 bug fix and security update

Vendor

Red Hat Product Security

Published

July 21, 2026

Last Modified

July 22, 2026

🔗 CVE IDs covered (3)

CVE-2026-46242 →CVE-2026-46316 →CVE-2026-53359 →

📋 Description

CVE-2026-46242 — kernel: eventpoll: fix ep_remove struct eventpoll / struct file UAF CVE-2026-46316 — kernel: KVM: arm64: vgic-its: Drop the translation cache reference only for the erased entry CVE-2026-53359 — kernel: KVM: x86: Fix shadow paging use-after-free due to unexpected role

🔗 References (6)

selfhttps://access.redhat.com/errata/RHSA-2026:40779
externalhttps://access.redhat.com/security/updates/classification/#important
externalhttps://bugzilla.redhat.com/show_bug.cgi?id=2483519
externalhttps://bugzilla.redhat.com/show_bug.cgi?id=2486982
externalhttps://bugzilla.redhat.com/show_bug.cgi?id=2497033
selfhttps://security.access.redhat.com/data/csaf/v2/advisories/2026/rhsa-2026_40779.json