Changelog for shim-x64-15.4-4.x86_64.rpm :

* Wed Apr 21 2021 Javier Martinez Canillas - 15.4-4- Fix handling of ignore_db and user_insecure_mode (pjones)- Fix booting on pre-UEFI Macs (pjones)- Fix mok variable storage allocation region (glin) Resolves: rhbz#1948432- Fix the package version in the .sbat data (pjones)
* Tue Apr 06 2021 Peter Jones - 15.4-3- Mark signed shim packages as protected in dnf. Resolves: rhbz#1874541- Conflict with older fwupd, but don\'t require it. Resolves: rhbz#1877751
* Tue Apr 06 2021 Peter Jones - 15.4-2- Update to shim 15.4 - Support for revocations via the \".sbat\" section and SBAT EFI variable - A new unit test framework and a bunch of unit tests - No external gnu-efi dependency - Better CI Resolves: CVE-2020-14372 Resolves: CVE-2020-25632 Resolves: CVE-2020-25647 Resolves: CVE-2020-27749 Resolves: CVE-2020-27779 Resolves: CVE-2021-20225 Resolves: CVE-2021-20233