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.
CVSS Details
- CVSS 3.1 Base Score: 6.4
- CVSS 3.1 Vector: (CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H)
Covered by Rapid7
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Alpine Linux | — | Upgrade grub | Aug 22, 2024 | Jul 29, 2020 |
| Centos_linux | — | Upgrade fwupdate-efiUpgrade grub2-efi-x64Upgrade shim-unsigned-x64Upgrade grub2-tools-debuginfoUpgrade fwupdUpgrade grub2-debuginfoUpgrade grub2-ppc-modulesUpgrade grub2-tools-efi-debuginfoUpgrade grub2-toolsUpgrade grub2-ppc64-modulesUpgrade grub2-efi-ia32-cdbootUpgrade fwupd-debuginfoUpgrade grub2-debugsourceUpgrade shim-ia32Upgrade grub2Upgrade grub2-commonUpgrade grub2-efi-ia32-modulesUpgrade fwupdate-develUpgrade grub2-efi-x64-cdbootUpgrade grub2-pcUpgrade mokutilUpgrade shim-unsigned-ia32Upgrade grub2-tools-minimal-debuginfoUpgrade shim-x64Upgrade fwupdate-libsUpgrade grub2-efi-ia32Upgrade mokutil-debuginfoUpgrade grub2-pc-modulesUpgrade grub2-efi-x64-modulesUpgrade grub2-ppc64le-modulesUpgrade fwupd-debugsourceUpgrade grub2-tools-minimalUpgrade fwupdateUpgrade grub2-tools-extraUpgrade grub2-efi-aa64-modulesUpgrade grub2-tools-extra-debuginfoUpgrade fwupdate-debuginfoUpgrade grub2-tools-efi | 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-efi-aa64Upgrade grub2-efi-aa64-cdbootUpgrade grub2-toolsUpgrade grub2-tools-minimalUpgrade grub2-tools-extraUpgrade grub2-commonUpgrade grub2-efi-aa64-modules | Aug 31, 2020 | Jul 29, 2020 |
| Oracle_linux | — | Upgrade grub2-efi-ia32-modulesUpgrade grub2-efi-ia32-cdbootUpgrade grub2-efi-aa64-cdbootUpgrade grub2-efi-x64Upgrade grub2-toolsUpgrade grub2Upgrade grub2-commonUpgrade grub2-tools-minimalUpgrade grub2-tools-extraUpgrade grub2-efi-x64-modulesUpgrade grub2-efi-x64-cdbootUpgrade grub2-efi-ia32Upgrade grub2-efi-aa64-modulesUpgrade grub2-tools-efiUpgrade grub2-efi-aa64Upgrade grub2-pc-modulesUpgrade grub2-pc | Jul 30, 2020 | Jul 29, 2020 |
| Redhat_linux | — | Upgrade grub2-efi-x64Upgrade grub2-efi-ia32-modulesUpgrade shim-x64Upgrade grub2-efi-x64-cdbootUpgrade mokutil-debuginfoUpgrade grub2-ppc64-modulesUpgrade grub2-toolsUpgrade fwupdate-develUpgrade shim-unsigned-x64-debuginfoUpgrade grub2-efi-ia32Upgrade grub2-ppc-modulesUpgrade grub2-tools-minimalUpgrade fwupdate-efiUpgrade mokutilUpgrade grub2-tools-minimal-debuginfoUpgrade fwupd-debuginfoUpgrade grub2Upgrade shim-ia32Upgrade grub2-tools-efi-debuginfoUpgrade grub2-debuginfoUpgrade shim-unsigned-ia32Upgrade fwupdate-debuginfoUpgrade grub2-ppc64le-modulesUpgrade grub2-tools-extraUpgrade shim-unsigned-x64Upgrade grub2-tools-efiUpgrade grub2-debugsourceUpgrade fwupdateUpgrade fwupd-debugsourceUpgrade grub2-pcUpgrade fwupdate-libsUpgrade grub2-commonUpgrade grub2-tools-debuginfoUpgrade grub2-pc-modulesUpgrade grub2-efi-aa64-modulesUpgrade fwupdUpgrade grub2-tools-extra-debuginfoUpgrade grub2-efi-ia32-cdbootUpgrade grub2-efi-x64-modulesUpgrade shim-unsigned-ia32-debuginfoUpgrade shim-unsigned-aa64-debuginfo | Jul 30, 2020 | Jul 29, 2020 |
| Suse | — | Upgrade grub2Upgrade grub2-s390x-emuUpgrade grub2-branding-upstreamUpgrade grub2-i386-xenUpgrade grub2-arm64-efiUpgrade grub2-x86_64-efi-debugUpgrade grub2-x86_64-efiUpgrade grub2-x86_64-xenUpgrade grub2-snapper-pluginUpgrade grub2-i386-pcUpgrade grub2-powerpc-ieee1275Upgrade grub2-i386-pc-debugUpgrade grub2-i386-efi-debugUpgrade grub2-systemd-sleep-pluginUpgrade grub2-i386-efi | Jul 30, 2020 | Jul 29, 2020 |
| Ubuntu | — | Upgrade grub-efi-amd64-binUpgrade grub-efi-arm64-binUpgrade grub-efi-ia32-binUpgrade grub-efi-arm-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 |
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