What is RHSA-2026:39983?

RHSA-2026:39983 is a security advisory published by Red Hat Product Security with Medium severity. Red Hat Security Advisory: kernel-rt security update

Which CVE IDs does RHSA-2026:39983 cover?

RHSA-2026:39983 covers the following CVE IDs: CVE-2026-53166, CVE-2026-53359, CVE-2026-43027, CVE-2026-43499, CVE-2026-46113. Each CVE has its own detail page on EchelonGraph Pulse with the synthesized EG score.

What is the CVSS v3 score of RHSA-2026:39983?

RHSA-2026:39983 has a CVSS v3 base score of 7.8, published by Red Hat Product Security.

RHSA-2026:39983MediumCVSS 7.8

Red Hat Security Advisory: kernel-rt security update

Vendor

Red Hat Product Security

Published

July 15, 2026

Last Modified

July 15, 2026

🔗 CVE IDs covered (5)

CVE-2026-53166 →CVE-2026-53359 →CVE-2026-43027 →CVE-2026-43499 →CVE-2026-46113 →

📋 Description

CVE-2026-43027 — kernel: netfilter: nf_conntrack_helper: pass helper to expect cleanup CVE-2026-43499 — kernel: rtmutex: Use waiter::task instead of current in remove_waiter() CVE-2026-46113 — kernel: KVM: x86: Fix shadow paging use-after-free due to unexpected GFN CVE-2026-53166 — kernel: futex/requeue: Prevent NULL pointer dereference in remove_waiter() on self-deadlock CVE-2026-53359 — kernel: KVM: x86: Fix shadow paging use-after-free due to unexpected role

🔗 References (8)

selfhttps://access.redhat.com/errata/RHSA-2026:39983
externalhttps://access.redhat.com/security/updates/classification/#moderate
externalhttps://bugzilla.redhat.com/show_bug.cgi?id=2464369
externalhttps://bugzilla.redhat.com/show_bug.cgi?id=2480453
externalhttps://bugzilla.redhat.com/show_bug.cgi?id=2482587
externalhttps://bugzilla.redhat.com/show_bug.cgi?id=2492805
externalhttps://bugzilla.redhat.com/show_bug.cgi?id=2497033
selfhttps://security.access.redhat.com/data/csaf/v2/advisories/2026/rhsa-2026_39983.json