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Medium ELSA-2026-4648 1 CVE

Moderate: grub2 security update (Oracle Linux 8)

Published Mar 17, 2026 · Updated Mar 17, 2026

Summary

[2.02-170.0.1.el8_10.1]
- Update grub2 dependencies to match new Secure Boot certificate chain of trust [Orabug: 37766761]
- Fix typo in SBAT metadata [Orabug: 37693946]
- Allow installation of grub2 only with shim-aa64 that allows booting it [Orabug: 37693946]
- net/dns: Fix removal of DNS server [Orabug: 37539625]
- net/dns: Simplify error handling of recv_hook() function [Orabug: 37539625]
- net/dns: Add debugging messages in recv_hook() function [Orabug: 37539625]
- net/dns: Fix lookup error when no IPv6 is returned [Orabug: 37539625]
- Use correct os_name on OL
- Backport the support for setting custom kernels as default kernels [Orabug: 36690061]
- Restore correct SBAT entries
- Replaced bugzilla.oracle.com references [Orabug: 35475894]
- efinet: Close and reopen card on failure [Orabug: 35126950]
- Fix CVE-2022-3775 [Orabug: 34867710]
- Bump SBAT metadata for grub to 3 [Orabug: 34871758]
- Enable signing on aarch64
- Don't try to switch to a BLS config if GRUB_ENABLE_BLSCFG is already set (Javier Martinez Canillas) [Orabug: 34375996]
- Enable back btrfs module by default [Orabug: 34377188]
- Backport upstream SNP protocol fixes [Orabug: 34195100]
- Rebase Fix EFI loader kernel image allocation patch, adapt it to new NX code [Orabug: 34352232]
- enable multiboot2 [Orabug: 34285558]
- backport arm64: Fix EFI loader kernel image allocation [Orabug: 33702462]
- backport Arm: check for the PE magic for the compiled arch [Orabug: 33702462]
- Backport some better script logic for BTRFS support [Orabug: 32448171]
- Do not add shim and grub certificate deps for aarch64 packages [Orabug: 32670033]
- Update Oracle SBAT data [Orabug: 32670033]
- Use new signing certificate [Orabug: 32670033]
- Fix various coverity issues [Orabug: 32530657]
- Set proper blsdir if /boot is on btrfs rootfs [Orabug: 32063327]
- Add CVE-2020-15706, CVE-2020-15707 to the list [Orabug: 31225072]
- honor /etc/sysconfig/kernel DEFAULTKERNEL setting for BLS [Orabug: 30643497]
- set EFIDIR as redhat for additional grub2 tools [Orabug: 29875597]
- Update upstream references [Orabug: 26388226]
- Insert Unbreakable Enterprise Kernel text into BLS config file [Orabug: 29417955]
- fix symlink removal scriptlet, to be executed only on removal [Orabug: 19231481]
- Fix comparison in patch for 18504756
- Remove symlink to grub environment file during uninstall on EFI platforms [Orabug: 19231481]
- Put 'with' in menuentry instead of 'using' [Orabug: 18504756]
- Use different titles for UEK and RHCK kernels [Orabug: 18504756]

[2.02-170.1]
- Fixes CVE-2025-61662 Missing unregister call for gettext command may lead to use-after-free
- Resolves: #RHEL-141583

[2.02-170]
- fs/xfs/ppc64le: Update xfs code to fix install on 4KB block size
- Resolves: #RHEL-142208

Fixed packages 16

ReleasePackageFixed in
Oracle Linux · 8 grub2-common 1:2.02-170.0.1.el8_10.1
Oracle Linux · 8 grub2-efi-aa64 1:2.02-170.0.1.el8_10.1
Oracle Linux · 8 grub2-efi-aa64-cdboot 1:2.02-170.0.1.el8_10.1
Oracle Linux · 8 grub2-efi-aa64-modules 1:2.02-170.0.1.el8_10.1
Oracle Linux · 8 grub2-efi-ia32 1:2.02-170.0.1.el8_10.1
Oracle Linux · 8 grub2-efi-ia32-cdboot 1:2.02-170.0.1.el8_10.1
Oracle Linux · 8 grub2-efi-ia32-modules 1:2.02-170.0.1.el8_10.1
Oracle Linux · 8 grub2-efi-x64 1:2.02-170.0.1.el8_10.1
Oracle Linux · 8 grub2-efi-x64-cdboot 1:2.02-170.0.1.el8_10.1
Oracle Linux · 8 grub2-efi-x64-modules 1:2.02-170.0.1.el8_10.1
Oracle Linux · 8 grub2-pc 1:2.02-170.0.1.el8_10.1
Oracle Linux · 8 grub2-pc-modules 1:2.02-170.0.1.el8_10.1
Oracle Linux · 8 grub2-tools 1:2.02-170.0.1.el8_10.1
Oracle Linux · 8 grub2-tools-efi 1:2.02-170.0.1.el8_10.1
Oracle Linux · 8 grub2-tools-extra 1:2.02-170.0.1.el8_10.1
Oracle Linux · 8 grub2-tools-minimal 1:2.02-170.0.1.el8_10.1

Vulnerabilities 1