A vulnerability in the GRUB2 bootloader has been identified in the normal module. This flaw, a memory Use After Free issue, occurs because the normal_exit command is not properly unregistered when its related module is unloaded. An attacker can exploit this condition by invoking the command after the module has been removed, causing the system to improperly access a previously freed memory location. This leads to a system crash or possible impacts in data confidentiality and integrity.
CVSS Details
- CVSS 3.1 Base Score: 4.9
- CVSS 3.1 Vector: (CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L)
Covered by Rapid7
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Amazon Linux Ami 2 | — | Upgrade grub2-efi-aa64-ec2Upgrade grub2-commonUpgrade grub2-debuginfoUpgrade grub2-efi-x64-ec2Upgrade grub2-efi-x64-modulesUpgrade grub2-efi-aa64-modulesUpgrade grub2-toolsUpgrade grub2-pc-modulesUpgrade grub2-emu-modulesUpgrade grub2-emuUpgrade grub2Upgrade grub2-tools-efiUpgrade grub2-efi-x64-cdbootUpgrade grub2-efi-aa64Upgrade grub2-efi-aa64-cdbootUpgrade grub2-tools-extraUpgrade grub2-tools-minimalUpgrade grub2-pcUpgrade grub2-efi-x64 | May 20, 2026 | May 20, 2026 |
| Amazon_linux_2023 | — | Upgrade grub2-emuUpgrade grub2-tools-extra-debuginfoUpgrade grub2-efi-aa64-modulesUpgrade grub2-emu-modulesUpgrade grub2-toolsUpgrade grub2-commonUpgrade grub2-efi-aa64Upgrade grub2-debuginfoUpgrade grub2-emu-debuginfoUpgrade grub2-tools-efiUpgrade grub2-efi-x64-ec2Upgrade grub2-debugsourceUpgrade grub2-tools-efi-debuginfoUpgrade grub2-tools-minimalUpgrade grub2-efi-aa64-ec2Upgrade grub2-tools-extraUpgrade grub2-efi-x64-cdbootUpgrade grub2-tools-debuginfoUpgrade grub2-tools-minimal-debuginfoUpgrade grub2-pc-modulesUpgrade grub2-efi-x64Upgrade grub2-pcUpgrade grub2-efi-x64-modulesUpgrade grub2-efi-aa64-cdboot | Jan 12, 2026 | Nov 18, 2025 |
| Huawei Euleros 2_0_sp10 | — | Upgrade grub2-tools-minimalUpgrade grub2-tools-extraUpgrade grub2-toolsUpgrade grub2-efi-aa64-modulesUpgrade grub2-efi-aa64Upgrade grub2-common | Mar 17, 2026 | Mar 17, 2026 |
| Huawei Euleros 2_0_sp11 | — | Upgrade grub2-toolsUpgrade grub2-efi-aa64-modulesUpgrade grub2-tools-extraUpgrade grub2-commonUpgrade grub2-efi-aa64Upgrade grub2-tools-minimal | Mar 17, 2026 | Mar 17, 2026 |
| Huawei Euleros 2_0_sp12 | — | Upgrade grub2-tools-minimalUpgrade grub2-efi-aa64-modulesUpgrade grub2-tools-extraUpgrade grub2-toolsUpgrade grub2-efi-aa64Upgrade grub2-common | Mar 17, 2026 | Mar 17, 2026 |
| Huawei Euleros 2_0_sp13 | — | Upgrade grub2-toolsUpgrade grub2-tools-extraUpgrade grub2-efi-aa64-modulesUpgrade grub2-commonUpgrade grub2-tools-minimalUpgrade grub2-efi-aa64 | Feb 3, 2026 | Feb 2, 2026 |
| Redhat_linux | — | No solution exists | Jul 17, 2026 | Nov 18, 2025 |
| Vmware Photon_os | — | Use 'tdnf update' to upgrade all packages to the latest version. | May 27, 2026 | Nov 18, 2025 |
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