CVE-2023-40547: Redhat: CVE-2023-40547 Shim - RCE in HTTP boot support may lead to secure boot bypass

Why is this Red Hat, Inc. CVE included in the Security Update Guide?

The vulnerability assigned to this CVE is in Linux Shim boot. It is being documented in the Security Update Guide to announce that the latest builds of Microsoft Windows address this vulnerability by blocking old, unpatched, Linux boot loaders by applying SBAT (Secure Boot Advanced Targeting) EFI variables in the UEFI library. Please see Security Update Guide Supports CVEs Assigned by Industry Partners for more information.

For more information see: CVE-2023-40547.