A grub2 bug fix update has been released for Oracle Linux 7.

El-errata: ELBA-2021-9158 Oracle Linux 7 grub2 bug fix update

Oracle Linux Bug Fix Advisory ELBA-2021-9158

  http://linux.oracle.com/errata/ELBA-2021-9158.html

The following updated rpms for Oracle Linux 7 have been uploaded to the
Unbreakable Linux Network:

x86_64:
grub2-2.02-0.87.0.9.el7_9.6.x86_64.rpm
grub2-common-2.02-0.87.0.9.el7_9.6.noarch.rpm
grub2-efi-ia32-2.02-0.87.0.9.el7_9.6.x86_64.rpm
grub2-efi-ia32-modules-2.02-0.87.0.9.el7_9.6.noarch.rpm
grub2-efi-x64-2.02-0.87.0.9.el7_9.6.x86_64.rpm
grub2-efi-x64-modules-2.02-0.87.0.9.el7_9.6.noarch.rpm
grub2-pc-2.02-0.87.0.9.el7_9.6.x86_64.rpm
grub2-pc-modules-2.02-0.87.0.9.el7_9.6.noarch.rpm
grub2-tools-2.02-0.87.0.9.el7_9.6.x86_64.rpm
grub2-tools-extra-2.02-0.87.0.9.el7_9.6.x86_64.rpm
grub2-tools-minimal-2.02-0.87.0.9.el7_9.6.x86_64.rpm
grub2-efi-ia32-cdboot-2.02-0.87.0.9.el7_9.6.x86_64.rpm
grub2-efi-x64-cdboot-2.02-0.87.0.9.el7_9.6.x86_64.rpm

SRPMS:
  http://oss.oracle.com/ol7/SRPMS-updates/grub2-2.02-0.87.0.9.el7_9.6.src.rpm


Description of changes:

[2.02-0.87.0.9.e7.6]
- Update signing certificate [Orabug: 32670043]
- Update shim and certificates dependencies [Orabug: 32670043]
- xfs: Don't attempt to iterate over empty directory [Orabug: 32584717]
- add SBAT metadata for Oracle Linux grub2
- Use similar format for menu entry in grub environment block
- config file. [Orabug: 32172943]
- Fix degradation in multiboot2 code [Orabug: 32069510]
- Update signing certificate for efi binaries
- Update upstream references [Orabug: 30138841]
- Restore symlink to grub environment file, that was removed during
grub2-efi update
if grub2 package is also installed on UEFI machines [Orabug: 27345750]
- fix symlink removal scriptlet, to be executed only on removal [Orabug:
19231481]
- Fix comparison in patch for [Orabug: 18504756]
- Remove symlink to grub environment file during uninstall on EFI
platforms [Orabug: 19231481]
- replace dynamic EFI boot folder path generation with predefined
'redhat' (Alex Burmashev)
- Put "with" in menuentry instead of "using" [Orabug: 18504756]
- Use different titles for UEK and RHCK kernels [Orabug: 18504756]