A flaw was found in grub2 in versions prior to 2.06. The cutmem command does not honor secure boot locking allowing an privileged attacker to remove address ranges from memory creating an opportunity to circumvent SecureBoot protections after proper triage about grub's memory layout. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability.
CVSS Details
- CVSS 3.1 Base Score: 7.5
- CVSS 3.1 Vector: (CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:H)
Covered by Rapid7
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Alma_linux | — | Upgrade shim-ia32Upgrade shim-unsigned-x64Upgrade shim-aa64Upgrade shim-x64Upgrade shim-unsigned-aarch64 | May 4, 2022 | Mar 3, 2021 |
| Alpine Linux | — | Upgrade grub | Aug 22, 2024 | Mar 3, 2021 |
| Amazon Linux Ami 2 | — | Upgrade grub2-tools-extraUpgrade grub2-efi-x64Upgrade grub2-efi-x64-ec2Upgrade grub2-efi-x64-modulesUpgrade grub2-efi-aa64-modulesUpgrade grub2-tools-minimalUpgrade grub2-efi-aa64-cdbootUpgrade grub2-efi-x64-cdbootUpgrade grub2-tools-efiUpgrade grub2-toolsUpgrade grub2-efi-aa64-ec2Upgrade grub2-pc-modulesUpgrade grub2Upgrade grub2-pcUpgrade grub2-emuUpgrade grub2-emu-modulesUpgrade grub2-debuginfoUpgrade grub2-commonUpgrade grub2-efi-aa64 | Jul 19, 2021 | Mar 3, 2021 |
| Arch Linux | — | Upgrade to the latest version of Arch Linux | Jul 11, 2025 | Mar 3, 2021 |
| Centos_linux | — | Upgrade grub2-efi-ia32-cdbootUpgrade grub2-ppc64le-modulesUpgrade grub2-pc-modulesUpgrade grub2-debugsourceUpgrade grub2-efi-x64-modulesUpgrade grub2-efi-x64Upgrade grub2-efi-aa64-modulesUpgrade grub2-tools-extra-debuginfoUpgrade grub2-pcUpgrade grub2Upgrade fwupd-debugsourceUpgrade grub2-tools-debuginfoUpgrade grub2-tools-minimalUpgrade grub2-tools-efiUpgrade shim-x64Upgrade grub2-ppc-modulesUpgrade fwupdUpgrade grub2-commonUpgrade fwupd-tests-debuginfoUpgrade fwupd-debuginfoUpgrade grub2-efi-ia32Upgrade grub2-toolsUpgrade grub2-efi-ia32-modulesUpgrade grub2-tools-efi-debuginfoUpgrade grub2-ppc64-modulesUpgrade grub2-tools-extraUpgrade grub2-efi-x64-cdbootUpgrade shim-ia32Upgrade grub2-tools-minimal-debuginfoUpgrade grub2-debuginfo | Mar 3, 2021 | Mar 2, 2021 |
| Debian | — | Upgrade grub2 | Mar 4, 2021 | Mar 4, 2021 |
| Gentoo Linux | — | Upgrade sys-devel/grub. | May 3, 2021 | Mar 3, 2021 |
| Huawei Euleros 2_0_sp10 | — | Upgrade grub2-tools-efiUpgrade grub2-pc-modulesUpgrade grub2-efi-x64-modulesUpgrade grub2-commonUpgrade grub2-tools-extraUpgrade grub2-efi-x64Upgrade grub2-tools-minimalUpgrade grub2-toolsUpgrade grub2-pc | Feb 13, 2023 | Mar 3, 2021 |
| Huawei Euleros 2_0_sp2 | — | Upgrade grub2-commonUpgrade grub2-pc-modulesUpgrade grub2-tools-extraUpgrade grub2-toolsUpgrade grub2Upgrade grub2-tools-minimalUpgrade grub2-pcUpgrade grub2-efi-x64 | Sep 16, 2021 | Mar 3, 2021 |
| Huawei Euleros 2_0_sp3 | — | Upgrade grub2-tools-extraUpgrade grub2-toolsUpgrade grub2-efi-x64-cdbootUpgrade grub2-commonUpgrade grub2Upgrade grub2-tools-minimalUpgrade grub2-efi-x64Upgrade grub2-pcUpgrade grub2-pc-modulesUpgrade grub2-efi-x64-modules | Apr 30, 2021 | Mar 3, 2021 |
| Huawei Euleros 2_0_sp5 | — | Upgrade grub2-efi-ia32-cdbootUpgrade grub2Upgrade grub2-tools-minimalUpgrade grub2-pcUpgrade grub2-efi-x64Upgrade grub2-efi-x64-modulesUpgrade grub2-pc-modulesUpgrade grub2-efi-x64-cdbootUpgrade grub2-efi-ia32Upgrade grub2-toolsUpgrade grub2-tools-extraUpgrade grub2-common | Jul 19, 2021 | Mar 3, 2021 |
| Huawei Euleros 2_0_sp8 | — | Upgrade grub2-efi-aa64-modulesUpgrade grub2-efi-aa64-cdbootUpgrade grub2-toolsUpgrade grub2-tools-extraUpgrade grub2-tools-minimalUpgrade grub2-commonUpgrade grub2-efi-aa64 | May 18, 2021 | Mar 3, 2021 |
| Huawei Euleros 2_0_sp9 | — | Upgrade grub2-tools-minimalUpgrade grub2-toolsUpgrade grub2-commonUpgrade grub2-efi-aa64-modulesUpgrade grub2-tools-extraUpgrade grub2-efi-aa64 | Jun 2, 2021 | Mar 3, 2021 |
| Oracle_linux | — | Upgrade grub2-efi-ia32-cdbootUpgrade grub2-efi-x64Upgrade grub2-efi-ia32Upgrade grub2-efi-ia32-modulesUpgrade grub2-efi-x64-cdbootUpgrade grub2-efi-aa64Upgrade grub2Upgrade grub2-pc-modulesUpgrade grub2-efi-aa64-cdbootUpgrade grub2-toolsUpgrade grub2-pcUpgrade grub2-tools-efiUpgrade grub2-commonUpgrade grub2-tools-extraUpgrade grub2-efi-x64-modulesUpgrade grub2-efi-aa64-modulesUpgrade grub2-tools-minimal | Mar 3, 2021 | Mar 2, 2021 |
| Redhat_linux | — | Upgrade grub2-pc-modulesUpgrade shim-unsigned-x64Upgrade grub2-ppc64le-modulesUpgrade grub2-tools-minimal-debuginfoUpgrade grub2-debuginfoUpgrade grub2-efi-ia32Upgrade grub2-tools-extra-debuginfoUpgrade fwupdUpgrade grub2-efi-aa64-modulesUpgrade grub2-pcUpgrade grub2-tools-efiUpgrade grub2Upgrade shim-x64Upgrade grub2-efi-x64-cdbootUpgrade fwupd-debugsourceUpgrade grub2-tools-efi-debuginfoUpgrade grub2-efi-ia32-cdbootUpgrade grub2-commonUpgrade fwupd-tests-debuginfoNo solution existsUpgrade grub2-tools-minimalUpgrade grub2-efi-ia32-modulesUpgrade grub2-tools-debuginfoUpgrade grub2-ppc-modulesUpgrade grub2-ppc64-modulesUpgrade grub2-efi-x64-modulesUpgrade shim-ia32Upgrade grub2-debugsourceUpgrade grub2-toolsUpgrade grub2-efi-x64Upgrade grub2-tools-extraUpgrade fwupd-debuginfo | Mar 3, 2021 | Mar 2, 2021 |
| Rocky_linux | — | Upgrade fwupd-debugsourceUpgrade fwupd-debuginfoUpgrade fwupd | Mar 12, 2024 | Mar 3, 2021 |
| Suse | — | Upgrade grub2-i386-pcUpgrade grub2Upgrade grub2-x86_64-xenUpgrade grub2-x86_64-efi-debugUpgrade grub2-branding-upstreamUpgrade grub2-i386-xenUpgrade grub2-s390x-emuUpgrade grub2-snapper-pluginUpgrade grub2-x86_64-efiUpgrade grub2-powerpc-ieee1275Upgrade grub2-i386-efiUpgrade grub2-i386-pc-debugUpgrade grub2-systemd-sleep-pluginUpgrade grub2-i386-efi-debugUpgrade grub2-arm64-efi | Mar 3, 2021 | Mar 2, 2021 |
| Ubuntu | — | Upgrade grub-efi-amd64-signedUpgrade grub-efi-arm64-binUpgrade grub-efi-arm64-signedUpgrade grub-efi-amd64-bin | Jun 18, 2021 | Mar 2, 2021 |
| Vmware Photon_os | — | Use 'tdnf update' to upgrade all packages to the latest version. | Jan 20, 2025 | Mar 3, 2021 |
Prioritise with Active Threat Intelligence
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