CVE-2025-61663
Fixed in a distro release EPSS <1%CVSS 4.9
A vulnerability has been identified in the GRUB2 bootloader's normal command that poses an immediate Denial of Service (DoS) risk. This flaw is a Use-after-Free issue, caused because the normal command is not properly unregistered when the module is unloaded. An attacker who can execute this command can force the system to access memory locations that are no longer valid. Successful exploitation leads directly to system instability, which can result in a complete crash and halt system availability. Impact on the data integrity and confidentiality is also not discarded.
Products: gnu grub2, Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 7, Red Hat Enterprise Linux 8, Red Hat Enterprise Linux 9, Red Hat OpenShift Container Platform 4
Distro releases
| Release | Package | Fixed in |
|---|---|---|
| Amazon Linux 2 | grub2 | 1:2.06-14.amzn2.0.7 |
| Amazon Linux 2 | grub2-common | 1:2.06-14.amzn2.0.7 |
| Amazon Linux 2 | grub2-efi-aa64 | 1:2.06-14.amzn2.0.7 |
| Amazon Linux 2 | grub2-efi-aa64-cdboot | 1:2.06-14.amzn2.0.7 |
| Amazon Linux 2 | grub2-efi-aa64-ec2 | 1:2.06-14.amzn2.0.7 |
| Amazon Linux 2 | grub2-efi-aa64-modules | 1:2.06-14.amzn2.0.7 |
| Amazon Linux 2 | grub2-efi-x64 | 1:2.06-14.amzn2.0.7 |
| Amazon Linux 2 | grub2-efi-x64-cdboot | 1:2.06-14.amzn2.0.7 |
| Amazon Linux 2 | grub2-efi-x64-ec2 | 1:2.06-14.amzn2.0.7 |
| Amazon Linux 2 | grub2-efi-x64-modules | 1:2.06-14.amzn2.0.7 |
| Amazon Linux 2 | grub2-emu | 1:2.06-14.amzn2.0.7 |
| Amazon Linux 2 | grub2-emu-modules | 1:2.06-14.amzn2.0.7 |
| Amazon Linux 2 | grub2-pc | 1:2.06-14.amzn2.0.7 |
| Amazon Linux 2 | grub2-pc-modules | 1:2.06-14.amzn2.0.7 |
| Amazon Linux 2 | grub2-tools | 1:2.06-14.amzn2.0.7 |
| Amazon Linux 2 | grub2-tools-efi | 1:2.06-14.amzn2.0.7 |
| Amazon Linux 2 | grub2-tools-extra | 1:2.06-14.amzn2.0.7 |
| Amazon Linux 2 | grub2-tools-minimal | 1:2.06-14.amzn2.0.7 |
| Amazon Linux 2023 | grub2-common | 1:2.06-61.amzn2023.0.21 |
| Amazon Linux 2023 | grub2-efi-aa64 | 1:2.06-61.amzn2023.0.21 |
| Amazon Linux 2023 | grub2-efi-aa64-cdboot | 1:2.06-61.amzn2023.0.21 |
| Amazon Linux 2023 | grub2-efi-aa64-ec2 | 1:2.06-61.amzn2023.0.21 |
| Amazon Linux 2023 | grub2-efi-aa64-modules | 1:2.06-61.amzn2023.0.21 |
| Amazon Linux 2023 | grub2-efi-x64 | 1:2.06-61.amzn2023.0.21 |
| Amazon Linux 2023 | grub2-efi-x64-cdboot | 1:2.06-61.amzn2023.0.21 |
| Amazon Linux 2023 | grub2-efi-x64-ec2 | 1:2.06-61.amzn2023.0.21 |
| Amazon Linux 2023 | grub2-efi-x64-modules | 1:2.06-61.amzn2023.0.21 |
| Amazon Linux 2023 | grub2-emu | 1:2.06-61.amzn2023.0.21 |
| Amazon Linux 2023 | grub2-emu-modules | 1:2.06-61.amzn2023.0.21 |
| Amazon Linux 2023 | grub2-pc | 1:2.06-61.amzn2023.0.21 |
| Amazon Linux 2023 | grub2-pc-modules | 1:2.06-61.amzn2023.0.21 |
| Amazon Linux 2023 | grub2-tools | 1:2.06-61.amzn2023.0.21 |
| Amazon Linux 2023 | grub2-tools-efi | 1:2.06-61.amzn2023.0.21 |
| Amazon Linux 2023 | grub2-tools-extra | 1:2.06-61.amzn2023.0.21 |
| Amazon Linux 2023 | grub2-tools-minimal | 1:2.06-61.amzn2023.0.21 |
| Debian 12 | grub2 | no fix |
| Debian 13 | grub2 | no fix |
| Debian 14 | grub2 | 2.14-1 |
| SUSE Linux Enterprise Micro 5.2 | grub2 | 2.04-150300.22.61.1 |
| SUSE Linux Enterprise Micro 5.3 | grub2 | 2.06-150400.11.66.1 |
| SUSE Linux Enterprise Micro 5.4 | grub2 | 2.06-150400.11.66.1 |
| SUSE Linux Enterprise Micro 5.5 | grub2 | 2.06-150500.29.59.1 |
| SUSE Linux Enterprise Module for Basesystem 15 SP6 | grub2 | 2.12-150600.8.44.2 |
| SUSE Linux Enterprise Module for Basesystem 15 SP7 | grub2 | 2.12-150700.19.19.1 |
| SUSE Linux Enterprise Module for Server Applications 15 SP6 | grub2 | 2.12-150600.8.44.2 |
| SUSE Linux Enterprise Module for Server Applications 15 SP7 | grub2 | 2.12-150700.19.19.1 |
| SUSE Linux Enterprise Server 16.0 | grub2 | 2.12-160000.3.1 |
| SUSE Linux Enterprise Server LTSS Extended Security 12 SP5 | grub2 | 2.02-193.1 |
| SUSE Linux Enterprise Server for SAP applications 16.0 | grub2 | 2.12-160000.3.1 |
| SUSE Linux Micro 6.1 | grub2 | 2.12-slfo.1.1_3.1 |
| SUSE Linux Micro 6.2 | grub2 | 2.12-160000.3.1 |
| Ubuntu 16.04 LTS | grub2-signed | no fix |
| Ubuntu 16.04 LTS | grub2-unsigned | no fix |
| Ubuntu 18.04 LTS | grub2-signed | no fix |
| Ubuntu 18.04 LTS | grub2-unsigned | no fix |
| Ubuntu 20.04 LTS | grub2-signed | no fix |
| Ubuntu 20.04 LTS | grub2-unsigned | no fix |
| Ubuntu 22.04 LTS | grub2-signed | no fix |
| Ubuntu 22.04 LTS | grub2-unsigned | no fix |
| Ubuntu 24.04 LTS | grub2-signed | no fix |
| Ubuntu 24.04 LTS | grub2-unsigned | no fix |
| Ubuntu 25.10 | grub2-signed | no fix |
| Ubuntu 25.10 | grub2-unsigned | no fix |
| Ubuntu 26.04 LTS | grub2-signed | no fix |
| Ubuntu 26.04 LTS | grub2-unsigned | no fix |
| Ubuntu 26.10 | grub2-signed | no fix |
| Ubuntu 26.10 | grub2-unsigned | no fix |
| Ubuntu Pro 14.04 LTS | grub2 | no fix |
| Ubuntu Pro 14.04 LTS | grub2-signed | no fix |
| openSUSE Leap 15.6 | grub2 | 2.12-150600.8.44.2 |
| openSUSE Leap 16.0 | grub2 | 2.12-160000.3.1 |
| openSUSE Tumbleweed | grub2 | 2.12-67.1 |