There's a use-after-free vulnerability in grub_cmd_chainloader() function; The chainloader command is used to boot up operating systems that doesn't support multiboot and do not have direct support from GRUB2. When executing chainloader more than once a use-after-free vulnerability is triggered. If an attacker can control the GRUB2's memory allocation pattern sensitive data may be exposed and arbitrary code execution can be achieved.
CVSS Details
- CVSS 3.1 Base Score: 6.4
- CVSS 3.1 Vector: (CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H)
Covered by Rapid7
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Alma_linux | — | Upgrade shim-unsigned-x64Upgrade grub2-ppc64le-modulesUpgrade shim-aa64Upgrade grub2-commonUpgrade grub2-pc-modulesUpgrade grub2-efi-x64Upgrade grub2-efi-aa64-modulesUpgrade grub2-efi-ia32Upgrade grub2-tools-efiUpgrade grub2-efi-x64-modulesUpgrade grub2-efi-aa64Upgrade grub2-pcUpgrade grub2-tools-extraUpgrade grub2-efi-ia32-cdbootUpgrade grub2-toolsUpgrade shim-x64Upgrade grub2-ppc64leUpgrade grub2-tools-minimalUpgrade grub2-efi-ia32-modulesUpgrade shim-ia32Upgrade grub2-efi-x64-cdbootUpgrade grub2-efi-aa64-cdboot | Aug 24, 2022 | Jun 16, 2022 |
| Amazon Linux Ami 2 | — | Upgrade grub2-tools-minimalUpgrade grub2-efi-aa64Upgrade grub2-pcUpgrade grub2-tools-efiUpgrade grub2-efi-x64-ec2Upgrade grub2-efi-aa64-cdbootUpgrade grub2Upgrade grub2-pc-modulesUpgrade grub2-toolsUpgrade grub2-efi-x64Upgrade grub2-efi-x64-cdbootUpgrade grub2-commonUpgrade grub2-efi-aa64-ec2Upgrade grub2-emuUpgrade grub2-emu-modulesUpgrade grub2-efi-aa64-modulesUpgrade grub2-tools-extraUpgrade grub2-efi-x64-modulesUpgrade grub2-debuginfo | Jul 21, 2023 | Jul 20, 2023 |
| Amazon_linux_2023 | — | Upgrade grub2-efi-x64-ec2Upgrade grub2-tools-efiUpgrade grub2-pc-modulesUpgrade grub2-efi-aa64-ec2Upgrade grub2-efi-x64-modulesUpgrade grub2-tools-minimalUpgrade grub2-commonUpgrade grub2-efi-aa64-modulesUpgrade grub2-tools-extra-debuginfoUpgrade grub2-tools-extraUpgrade grub2-efi-aa64-cdbootUpgrade grub2-tools-debuginfoUpgrade grub2-emu-debuginfoUpgrade grub2-emu-modulesUpgrade grub2-debugsourceUpgrade grub2-tools-efi-debuginfoUpgrade grub2-toolsUpgrade grub2-emuUpgrade grub2-efi-aa64Upgrade grub2-pcUpgrade grub2-efi-x64Upgrade grub2-tools-minimal-debuginfoUpgrade grub2-efi-x64-cdbootUpgrade grub2-debuginfo | Feb 17, 2025 | Jun 7, 2022 |
| Arch Linux | — | Upgrade to the latest version of Arch Linux | Jul 11, 2025 | Jul 20, 2023 |
| Centos_linux | — | Upgrade grub2-ppc64le-modulesUpgrade mokutil-debuginfoUpgrade grub2-commonUpgrade grub2-efi-aa64-modulesUpgrade grub2-efi-x64-modulesUpgrade grub2-emu-debuginfoUpgrade shim-ia32Upgrade grub2-tools-extra-debuginfoUpgrade grub2-debuginfoUpgrade grub2-toolsUpgrade shim-x64Upgrade grub2-debugsourceUpgrade grub2-efi-x64-cdbootUpgrade grub2-tools-minimal-debuginfoUpgrade mokutilUpgrade grub2-pc-modulesUpgrade grub2-tools-minimalUpgrade grub2-tools-efiUpgrade grub2-tools-efi-debuginfoUpgrade grub2-efi-ia32Upgrade mokutil-debugsourceUpgrade grub2-tools-debuginfoUpgrade grub2-efi-ia32-cdbootUpgrade grub2-pcUpgrade grub2-efi-x64Upgrade grub2-efi-ia32-modulesUpgrade grub2-tools-extra | Jun 17, 2022 | Jun 16, 2022 |
| Debian | — | Upgrade grub2 | Jul 30, 2024 | Jul 20, 2023 |
| Dell Powerstore Dsa2023173 | — | Upgrade Dell PowerStoreOS to the latest version | Oct 23, 2025 | Jun 21, 2023 |
| Gentoo Linux | — | Upgrade sys-boot/grub. | Sep 26, 2022 | Sep 25, 2022 |
| Huawei Euleros 2_0_sp10 | — | Upgrade grub2-tools-extraUpgrade grub2-tools-minimalUpgrade grub2-pc-modulesUpgrade grub2-tools-efiUpgrade grub2-efi-x64-modulesUpgrade grub2-pcUpgrade grub2-toolsUpgrade grub2-efi-x64Upgrade grub2-common | Aug 18, 2022 | Aug 16, 2022 |
| Huawei Euleros 2_0_sp8 | — | Upgrade grub2-commonUpgrade grub2-toolsUpgrade grub2-efi-aa64-modulesUpgrade grub2-tools-extraUpgrade grub2-tools-minimalUpgrade grub2-efi-aa64-cdbootUpgrade grub2-efi-aa64 | Aug 18, 2022 | Aug 16, 2022 |
| Huawei Euleros 2_0_sp9 | — | Upgrade grub2-toolsUpgrade grub2-efi-aa64Upgrade grub2-tools-extraUpgrade grub2-commonUpgrade grub2-efi-aa64-modulesUpgrade grub2-tools-minimal | Sep 14, 2022 | Aug 16, 2022 |
| Oracle_linux | — | Upgrade grub2-toolsUpgrade grub2Upgrade grub2-pcUpgrade grub2-efi-aa64-cdbootUpgrade grub2-efi-x64Upgrade grub2-efi-ia32Upgrade grub2-efi-ia32-modulesUpgrade grub2-efi-x64-cdbootUpgrade grub2-efi-ia32-cdbootUpgrade grub2-tools-minimalUpgrade grub2-efi-aa64-modulesUpgrade grub2-commonUpgrade grub2-tools-efiUpgrade grub2-pc-modulesUpgrade grub2-efi-x64-modulesUpgrade grub2-efi-aa64Upgrade grub2-tools-extra | Jun 8, 2022 | Jun 7, 2022 |
| Redhat_linux | — | Upgrade grub2-pcUpgrade grub2-pc-modulesUpgrade grub2-debuginfoUpgrade grub2-tools-extra-debuginfoUpgrade grub2-efi-x64-cdbootUpgrade mokutil-debuginfoUpgrade shim-unsigned-x64Upgrade shim-x64Upgrade grub2-efi-aa64-modulesUpgrade grub2-ppc64le-modulesUpgrade grub2-tools-efiUpgrade grub2-efi-ia32Upgrade grub2-tools-minimal-debuginfoUpgrade grub2-efi-x64Upgrade grub2-efi-ia32-modulesUpgrade grub2-tools-efi-debuginfoUpgrade mokutil-debugsourceNo solution existsUpgrade grub2-commonUpgrade grub2-debugsourceUpgrade mokutilUpgrade shim-ia32Upgrade grub2-efi-ia32-cdbootUpgrade grub2-efi-x64-modulesUpgrade grub2-emu-debuginfoUpgrade grub2-toolsUpgrade grub2-tools-minimalUpgrade grub2-tools-extraUpgrade grub2-tools-debuginfo | Jun 17, 2022 | Jun 16, 2022 |
| Rocky_linux | — | Upgrade grub2-tools-extraUpgrade grub2-efi-x64-cdbootUpgrade mokutilUpgrade grub2-debugsourceUpgrade shim-ia32Upgrade grub2-tools-minimal-debuginfoUpgrade shim-x64Upgrade grub2-tools-efi-debuginfoUpgrade grub2-efi-ia32-cdbootUpgrade grub2-tools-debuginfoUpgrade grub2-toolsUpgrade grub2-tools-minimalUpgrade grub2-efi-ia32Upgrade mokutil-debuginfoUpgrade grub2-tools-efiUpgrade mokutil-debugsourceUpgrade shim-unsigned-x64Upgrade grub2-efi-x64Upgrade grub2-tools-extra-debuginfoUpgrade grub2-debuginfoUpgrade grub2-pc | Jul 11, 2022 | Jul 7, 2022 |
| Suse | — | Upgrade grub2-arm64-efi-debugUpgrade grub2-i386-pc-debugUpgrade grub2-powerpc-ieee1275-debugUpgrade grub2-snapper-pluginUpgrade grub2-x86_64-efi-debugUpgrade grub2-branding-upstreamUpgrade grub2-s390x-emu-debugUpgrade grub2-arm64-efiUpgrade grub2-s390x-emuUpgrade grub2-x86_64-xenUpgrade grub2-i386-pcUpgrade grub2-systemd-sleep-pluginUpgrade grub2-powerpc-ieee1275Upgrade grub2Upgrade grub2-x86_64-efi | Oct 26, 2022 | Jul 10, 2022 |
| Ubuntu | — | Upgrade grub-efi-amd64-signedUpgrade grub-efi-arm64-binUpgrade shimUpgrade shim-signedUpgrade grub-efi-amd64Upgrade grub-efi-amd64-binUpgrade grub-efi-arm64-signedUpgrade grub-efi-arm64 | Sep 18, 2023 | Jul 20, 2023 |
| Vmware Photon_os | — | Use 'tdnf update' to upgrade all packages to the latest version. | Jan 20, 2025 | Jul 20, 2023 |
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