What is RHSA-2025:4471?

RHSA-2025:4471 is a security advisory published by Red Hat Product Security with High severity. Red Hat Security Advisory: kernel-rt security update

Which CVE IDs does RHSA-2025:4471 cover?

RHSA-2025:4471 covers the following CVE IDs: CVE-2025-21927. Each CVE has its own detail page on EchelonGraph Pulse with the synthesized EG score.

What is the CVSS v3 score of RHSA-2025:4471?

RHSA-2025:4471 has a CVSS v3 base score of 8.0, published by Red Hat Product Security.

Which products are affected by RHSA-2025:4471?

RHSA-2025:4471 affects 32 products, including: Red Hat Enterprise Linux NFV E4S (v.9.0); Red Hat Enterprise Linux Real Time E4S (v.9.0); kernel-rt-0:5.14.0-70.131.1.rt21.203.el9_0.src as a component of Red Hat Enterprise Linux NFV E4S (v.9.0); kernel-rt-0:5.14.0-70.131.1.rt21.203.el9_0.src as a component of Red Hat Enterprise Linux Real Time E4S (v.9.0); kernel-rt-0:5.14.0-70.131.1.rt21.203.el9_0.x86_64 as a component of Red Hat Enterprise Linux NFV E4S (v.9.0); and others — see the full list on the advisory page.

RHSA-2025:4471HighCVSS 8.0

Red Hat Security Advisory: kernel-rt security update

Vendor

Red Hat Product Security

Published

May 6, 2025

Last Modified

October 21, 2026

🔗 CVE IDs covered (1)

CVE-2025-21927 →

📋 Description

CVE-2025-21927 — kernel: nvme-tcp: fix potential memory corruption in nvme_tcp_recv_pdu()

🎯 Affected products32

Red Hat Enterprise Linux NFV E4S (v.9.0)
Red Hat Enterprise Linux Real Time E4S (v.9.0)
kernel-rt-0:5.14.0-70.131.1.rt21.203.el9_0.src as a component of Red Hat Enterprise Linux NFV E4S (v.9.0)
kernel-rt-0:5.14.0-70.131.1.rt21.203.el9_0.src as a component of Red Hat Enterprise Linux Real Time E4S (v.9.0)
kernel-rt-0:5.14.0-70.131.1.rt21.203.el9_0.x86_64 as a component of Red Hat Enterprise Linux NFV E4S (v.9.0)
kernel-rt-0:5.14.0-70.131.1.rt21.203.el9_0.x86_64 as a component of Red Hat Enterprise Linux Real Time E4S (v.9.0)
kernel-rt-core-0:5.14.0-70.131.1.rt21.203.el9_0.x86_64 as a component of Red Hat Enterprise Linux NFV E4S (v.9.0)
kernel-rt-core-0:5.14.0-70.131.1.rt21.203.el9_0.x86_64 as a component of Red Hat Enterprise Linux Real Time E4S (v.9.0)
kernel-rt-debug-0:5.14.0-70.131.1.rt21.203.el9_0.x86_64 as a component of Red Hat Enterprise Linux NFV E4S (v.9.0)
kernel-rt-debug-0:5.14.0-70.131.1.rt21.203.el9_0.x86_64 as a component of Red Hat Enterprise Linux Real Time E4S (v.9.0)
kernel-rt-debug-core-0:5.14.0-70.131.1.rt21.203.el9_0.x86_64 as a component of Red Hat Enterprise Linux NFV E4S (v.9.0)
kernel-rt-debug-core-0:5.14.0-70.131.1.rt21.203.el9_0.x86_64 as a component of Red Hat Enterprise Linux Real Time E4S (v.9.0)
kernel-rt-debug-debuginfo-0:5.14.0-70.131.1.rt21.203.el9_0.x86_64 as a component of Red Hat Enterprise Linux NFV E4S (v.9.0)
kernel-rt-debug-debuginfo-0:5.14.0-70.131.1.rt21.203.el9_0.x86_64 as a component of Red Hat Enterprise Linux Real Time E4S (v.9.0)
kernel-rt-debug-devel-0:5.14.0-70.131.1.rt21.203.el9_0.x86_64 as a component of Red Hat Enterprise Linux NFV E4S (v.9.0)
kernel-rt-debug-devel-0:5.14.0-70.131.1.rt21.203.el9_0.x86_64 as a component of Red Hat Enterprise Linux Real Time E4S (v.9.0)
kernel-rt-debug-kvm-0:5.14.0-70.131.1.rt21.203.el9_0.x86_64 as a component of Red Hat Enterprise Linux NFV E4S (v.9.0)
kernel-rt-debug-modules-0:5.14.0-70.131.1.rt21.203.el9_0.x86_64 as a component of Red Hat Enterprise Linux NFV E4S (v.9.0)
kernel-rt-debug-modules-0:5.14.0-70.131.1.rt21.203.el9_0.x86_64 as a component of Red Hat Enterprise Linux Real Time E4S (v.9.0)
kernel-rt-debug-modules-extra-0:5.14.0-70.131.1.rt21.203.el9_0.x86_64 as a component of Red Hat Enterprise Linux NFV E4S (v.9.0)
kernel-rt-debug-modules-extra-0:5.14.0-70.131.1.rt21.203.el9_0.x86_64 as a component of Red Hat Enterprise Linux Real Time E4S (v.9.0)
kernel-rt-debuginfo-0:5.14.0-70.131.1.rt21.203.el9_0.x86_64 as a component of Red Hat Enterprise Linux NFV E4S (v.9.0)
kernel-rt-debuginfo-0:5.14.0-70.131.1.rt21.203.el9_0.x86_64 as a component of Red Hat Enterprise Linux Real Time E4S (v.9.0)
kernel-rt-debuginfo-common-x86_64-0:5.14.0-70.131.1.rt21.203.el9_0.x86_64 as a component of Red Hat Enterprise Linux NFV E4S (v.9.0)
kernel-rt-debuginfo-common-x86_64-0:5.14.0-70.131.1.rt21.203.el9_0.x86_64 as a component of Red Hat Enterprise Linux Real Time E4S (v.9.0)
kernel-rt-devel-0:5.14.0-70.131.1.rt21.203.el9_0.x86_64 as a component of Red Hat Enterprise Linux NFV E4S (v.9.0)
kernel-rt-devel-0:5.14.0-70.131.1.rt21.203.el9_0.x86_64 as a component of Red Hat Enterprise Linux Real Time E4S (v.9.0)
kernel-rt-kvm-0:5.14.0-70.131.1.rt21.203.el9_0.x86_64 as a component of Red Hat Enterprise Linux NFV E4S (v.9.0)
kernel-rt-modules-0:5.14.0-70.131.1.rt21.203.el9_0.x86_64 as a component of Red Hat Enterprise Linux NFV E4S (v.9.0)
kernel-rt-modules-0:5.14.0-70.131.1.rt21.203.el9_0.x86_64 as a component of Red Hat Enterprise Linux Real Time E4S (v.9.0)
+2 more not shown

✅ Remediation

For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258 The system must be rebooted for this update to take effect. Workaround: To mitigate this issue, prevent the `nvme_tcp` module from being loaded. Please see https://access.redhat.com/solutions/41278 for how to blacklist a kernel module to prevent it from loading automatically. Note that this will make NVMe over TCP fabrics unavailable, and as such is not a suitable mitigation for systems relying on that technology.

🔗 CVE IDs covered (1)

📋 Description

🎯 Affected products32

✅ Remediation

🔗 References (4)