GRUB2 contains a race condition in grub_script_function_create() leading to a use-after-free vulnerability which can be triggered by redefining a function whilst the same function is already executing, leading to arbitrary code execution and secure boot restriction bypass. This issue affects GRUB2 version 2.04 and prior versions.
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Alpine Linux | — | Upgrade grub | Aug 22, 2024 | Jul 29, 2020 |
| Centos_linux | — | Upgrade fwupd-debugsourceUpgrade fwupdate-libsUpgrade mokutil-debuginfoUpgrade grub2-tools-minimalUpgrade grub2-tools-extra-debuginfoUpgrade grub2-efi-ia32Upgrade grub2-tools-efiUpgrade grub2-pc-modulesUpgrade grub2-tools-extraUpgrade grub2-efi-x64-modulesUpgrade grub2-efi-aa64-modulesUpgrade fwupdateUpgrade fwupdate-debuginfoUpgrade grub2-ppc64le-modulesUpgrade grub2-tools-debuginfoUpgrade fwupd-debuginfoUpgrade grub2-ppc64-modulesUpgrade grub2-tools-minimal-debuginfoUpgrade grub2-efi-ia32-cdbootUpgrade fwupdate-efiUpgrade grub2-efi-x64Upgrade shim-unsigned-x64Upgrade grub2-debuginfoUpgrade grub2-ppc-modulesUpgrade grub2-debugsourceUpgrade grub2Upgrade grub2-toolsUpgrade fwupdate-develUpgrade shim-ia32Upgrade shim-x64Upgrade mokutilUpgrade shim-unsigned-ia32Upgrade grub2-tools-efi-debuginfoUpgrade grub2-efi-ia32-modulesUpgrade grub2-commonUpgrade fwupdUpgrade grub2-efi-x64-cdbootUpgrade grub2-pc | Jul 30, 2020 | Jul 29, 2020 |
| Debian | — | Upgrade grub2 | Jul 31, 2020 | Jul 29, 2020 |
| Gentoo Linux | — | Upgrade sys-devel/grub. | May 3, 2021 | Jul 29, 2020 |
| Huawei Euleros 2_0_sp8 | — | Upgrade grub2-commonUpgrade grub2-efi-aa64-modulesUpgrade grub2-tools-extraUpgrade grub2-tools-minimalUpgrade grub2-efi-aa64Upgrade grub2-efi-aa64-cdbootUpgrade grub2-tools | Aug 31, 2020 | Jul 29, 2020 |
| Oracle_linux | — | Upgrade grub2-tools-extraUpgrade grub2-efi-x64Upgrade grub2-toolsUpgrade grub2Upgrade grub2-commonUpgrade grub2-efi-ia32-cdbootUpgrade grub2-tools-minimalUpgrade grub2-efi-x64-modulesUpgrade grub2-efi-aa64-cdbootUpgrade grub2-efi-ia32-modulesUpgrade grub2-efi-x64-cdbootUpgrade grub2-pcUpgrade grub2-pc-modulesUpgrade grub2-efi-aa64Upgrade grub2-efi-aa64-modulesUpgrade grub2-tools-efiUpgrade grub2-efi-ia32 | Jul 30, 2020 | Jul 29, 2020 |
| Redhat_linux | — | Upgrade shim-unsigned-x64Upgrade shim-unsigned-ia32-debuginfoUpgrade fwupdate-debuginfoUpgrade grub2-tools-extra-debuginfoUpgrade fwupd-debugsourceUpgrade fwupdateUpgrade grub2-pc-modulesUpgrade fwupdUpgrade grub2-ppc64le-modulesUpgrade grub2-tools-debuginfoUpgrade grub2-pcUpgrade grub2-debugsourceUpgrade shim-unsigned-ia32Upgrade grub2-efi-aa64-modulesUpgrade grub2-efi-ia32-cdbootUpgrade shim-unsigned-aa64-debuginfoUpgrade grub2-efi-x64-modulesUpgrade grub2-tools-efiUpgrade grub2-tools-extraUpgrade fwupdate-libsUpgrade grub2-commonUpgrade grub2-debuginfoUpgrade grub2-tools-efi-debuginfoUpgrade grub2-ppc64-modulesUpgrade grub2-toolsUpgrade grub2-efi-x64Upgrade fwupdate-develUpgrade shim-unsigned-x64-debuginfoUpgrade shim-x64Upgrade grub2-tools-minimalUpgrade fwupd-debuginfoUpgrade grub2-tools-minimal-debuginfoUpgrade grub2-ppc-modulesUpgrade grub2Upgrade grub2-efi-ia32Upgrade mokutilUpgrade mokutil-debuginfoUpgrade shim-ia32Upgrade grub2-efi-x64-cdbootUpgrade grub2-efi-ia32-modulesUpgrade fwupdate-efi | Jul 30, 2020 | Jul 29, 2020 |
| Suse | — | Upgrade grub2-arm64-efiUpgrade grub2Upgrade grub2-branding-upstreamUpgrade grub2-i386-xenUpgrade grub2-s390x-emuUpgrade grub2-x86_64-xenUpgrade grub2-i386-pcUpgrade grub2-x86_64-efiUpgrade grub2-x86_64-efi-debugUpgrade grub2-snapper-pluginUpgrade grub2-systemd-sleep-pluginUpgrade grub2-i386-efi-debugUpgrade grub2-powerpc-ieee1275Upgrade grub2-i386-pc-debugUpgrade grub2-i386-efi | Jul 30, 2020 | Jul 29, 2020 |
| Ubuntu | — | Upgrade grub-efi-arm-binUpgrade grub-efi-ia32-binUpgrade grub-efi-arm64-binUpgrade grub-efi-amd64-binUpgrade grub-efi-amd64-signedUpgrade grub-efi-arm64-signed | Aug 5, 2020 | Jul 29, 2020 |
| Vmware Photon_os | — | Use 'tdnf update' to upgrade all packages to the latest version. | Jan 20, 2025 | Jul 29, 2020 |
With curated Threat Intelligence, you can see which vulnerabilities truly put you at risk, prioritize what matters most, and act before attackers do.
Explore Intelligence Hub