What is RHSA-2021:2169?

RHSA-2021:2169 is a security advisory published by Red Hat Product Security with High severity. Red Hat Security Advisory: kernel-rt security and bug fix update

Which CVE IDs does RHSA-2021:2169 cover?

RHSA-2021:2169 covers the following CVE IDs: CVE-2021-3501, CVE-2021-3543. Each CVE has its own detail page on EchelonGraph Pulse with the synthesized EG score.

What is the CVSS v3 score of RHSA-2021:2169?

RHSA-2021:2169 has a CVSS v3 base score of 7.8, published by Red Hat Product Security.

Which products are affected by RHSA-2021:2169?

RHSA-2021:2169 affects 32 products, including: Red Hat Enterprise Linux Real Time (v. 8); Red Hat Enterprise Linux Real Time for NFV (v. 8); kernel-rt-0:4.18.0-305.3.1.rt7.75.el8_4.src as a component of Red Hat Enterprise Linux Real Time (v. 8); kernel-rt-0:4.18.0-305.3.1.rt7.75.el8_4.src as a component of Red Hat Enterprise Linux Real Time for NFV (v. 8); kernel-rt-0:4.18.0-305.3.1.rt7.75.el8_4.x86_64 as a component of Red Hat Enterprise Linux Real Time (v. 8); and others — see the full list on the advisory page.

RHSA-2021:2169HighCVSS 7.8

Red Hat Security Advisory: kernel-rt security and bug fix update

Vendor

Red Hat Product Security

Published

June 1, 2021

Last Modified

August 5, 2026

🔗 CVE IDs covered (2)

CVE-2021-3501 →CVE-2021-3543 →

📋 Description

CVE-2021-3501 — kernel: userspace applications can misuse the KVM API to cause a write of 16 bytes at an offset up to 32 GB from vcpu->run CVE-2021-3543 — kernel: nitro_enclaves stale file descriptors on failed usercopy

🎯 Affected products32

Red Hat Enterprise Linux Real Time (v. 8)
Red Hat Enterprise Linux Real Time for NFV (v. 8)
kernel-rt-0:4.18.0-305.3.1.rt7.75.el8_4.src as a component of Red Hat Enterprise Linux Real Time (v. 8)
kernel-rt-0:4.18.0-305.3.1.rt7.75.el8_4.src as a component of Red Hat Enterprise Linux Real Time for NFV (v. 8)
kernel-rt-0:4.18.0-305.3.1.rt7.75.el8_4.x86_64 as a component of Red Hat Enterprise Linux Real Time (v. 8)
kernel-rt-0:4.18.0-305.3.1.rt7.75.el8_4.x86_64 as a component of Red Hat Enterprise Linux Real Time for NFV (v. 8)
kernel-rt-core-0:4.18.0-305.3.1.rt7.75.el8_4.x86_64 as a component of Red Hat Enterprise Linux Real Time (v. 8)
kernel-rt-core-0:4.18.0-305.3.1.rt7.75.el8_4.x86_64 as a component of Red Hat Enterprise Linux Real Time for NFV (v. 8)
kernel-rt-debug-0:4.18.0-305.3.1.rt7.75.el8_4.x86_64 as a component of Red Hat Enterprise Linux Real Time (v. 8)
kernel-rt-debug-0:4.18.0-305.3.1.rt7.75.el8_4.x86_64 as a component of Red Hat Enterprise Linux Real Time for NFV (v. 8)
kernel-rt-debug-core-0:4.18.0-305.3.1.rt7.75.el8_4.x86_64 as a component of Red Hat Enterprise Linux Real Time (v. 8)
kernel-rt-debug-core-0:4.18.0-305.3.1.rt7.75.el8_4.x86_64 as a component of Red Hat Enterprise Linux Real Time for NFV (v. 8)
kernel-rt-debug-debuginfo-0:4.18.0-305.3.1.rt7.75.el8_4.x86_64 as a component of Red Hat Enterprise Linux Real Time (v. 8)
kernel-rt-debug-debuginfo-0:4.18.0-305.3.1.rt7.75.el8_4.x86_64 as a component of Red Hat Enterprise Linux Real Time for NFV (v. 8)
kernel-rt-debug-devel-0:4.18.0-305.3.1.rt7.75.el8_4.x86_64 as a component of Red Hat Enterprise Linux Real Time (v. 8)
kernel-rt-debug-devel-0:4.18.0-305.3.1.rt7.75.el8_4.x86_64 as a component of Red Hat Enterprise Linux Real Time for NFV (v. 8)
kernel-rt-debug-kvm-0:4.18.0-305.3.1.rt7.75.el8_4.x86_64 as a component of Red Hat Enterprise Linux Real Time for NFV (v. 8)
kernel-rt-debug-modules-0:4.18.0-305.3.1.rt7.75.el8_4.x86_64 as a component of Red Hat Enterprise Linux Real Time (v. 8)
kernel-rt-debug-modules-0:4.18.0-305.3.1.rt7.75.el8_4.x86_64 as a component of Red Hat Enterprise Linux Real Time for NFV (v. 8)
kernel-rt-debug-modules-extra-0:4.18.0-305.3.1.rt7.75.el8_4.x86_64 as a component of Red Hat Enterprise Linux Real Time (v. 8)
kernel-rt-debug-modules-extra-0:4.18.0-305.3.1.rt7.75.el8_4.x86_64 as a component of Red Hat Enterprise Linux Real Time for NFV (v. 8)
kernel-rt-debuginfo-0:4.18.0-305.3.1.rt7.75.el8_4.x86_64 as a component of Red Hat Enterprise Linux Real Time (v. 8)
kernel-rt-debuginfo-0:4.18.0-305.3.1.rt7.75.el8_4.x86_64 as a component of Red Hat Enterprise Linux Real Time for NFV (v. 8)
kernel-rt-debuginfo-common-x86_64-0:4.18.0-305.3.1.rt7.75.el8_4.x86_64 as a component of Red Hat Enterprise Linux Real Time (v. 8)
kernel-rt-debuginfo-common-x86_64-0:4.18.0-305.3.1.rt7.75.el8_4.x86_64 as a component of Red Hat Enterprise Linux Real Time for NFV (v. 8)
kernel-rt-devel-0:4.18.0-305.3.1.rt7.75.el8_4.x86_64 as a component of Red Hat Enterprise Linux Real Time (v. 8)
kernel-rt-devel-0:4.18.0-305.3.1.rt7.75.el8_4.x86_64 as a component of Red Hat Enterprise Linux Real Time for NFV (v. 8)
kernel-rt-kvm-0:4.18.0-305.3.1.rt7.75.el8_4.x86_64 as a component of Red Hat Enterprise Linux Real Time for NFV (v. 8)
kernel-rt-modules-0:4.18.0-305.3.1.rt7.75.el8_4.x86_64 as a component of Red Hat Enterprise Linux Real Time (v. 8)
kernel-rt-modules-0:4.18.0-305.3.1.rt7.75.el8_4.x86_64 as a component of Red Hat Enterprise Linux Real Time for NFV (v. 8)
+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: Red Hat has investigated whether a possible mitigation exists for this issue, and has not been able to identify a practical example. Please update as soon as possible.

🔗 CVE IDs covered (2)

📋 Description

🎯 Affected products32

✅ Remediation

🔗 References (5)