A flaw was found in grub2. When reading a symbolic link's name from a UFS filesystem, grub2 fails to validate the string length taken as an input. The lack of validation may lead to a heap out-of-bounds write, causing data integrity issues and eventually allowing an attacker to circumvent secure boot protections.
CVSS Details
- CVSS 3.1 Base Score: 6.7
- CVSS 3.1 Vector: (CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H)
Covered by Rapid7
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Alma_linux | — | Upgrade grub2-tools-efiUpgrade grub2-tools-extraUpgrade grub2-efi-aa64-cdbootUpgrade grub2-efi-x64-cdbootUpgrade grub2-pcUpgrade grub2-tools-minimalUpgrade grub2-efi-x64Upgrade grub2-pc-modulesUpgrade grub2-toolsUpgrade grub2-ppc64leUpgrade grub2-commonUpgrade grub2-efi-aa64Upgrade grub2-ppc64le-modulesUpgrade grub2-efi-x64-modulesUpgrade grub2-efi-aa64-modules | Jul 4, 2025 | Feb 18, 2025 |
| Amazon_linux_2023 | — | Upgrade grub2-tools-efiUpgrade grub2-commonUpgrade grub2-efi-x64-modulesUpgrade grub2-debugsourceUpgrade grub2-tools-efi-debuginfoUpgrade grub2-emu-debuginfoUpgrade grub2-emuUpgrade grub2-tools-extraUpgrade grub2-efi-aa64-modulesUpgrade grub2-emu-modulesUpgrade grub2-tools-minimalUpgrade grub2-efi-aa64-cdbootUpgrade grub2-tools-extra-debuginfoUpgrade grub2-efi-aa64-ec2Upgrade grub2-pc-modulesUpgrade grub2-efi-x64-ec2Upgrade grub2-efi-aa64Upgrade grub2-pcUpgrade grub2-efi-x64Upgrade grub2-efi-x64-cdbootUpgrade grub2-tools-debuginfoUpgrade grub2-toolsUpgrade grub2-tools-minimal-debuginfoUpgrade grub2-debuginfo | Apr 15, 2025 | Feb 18, 2025 |
| Debian | — | Upgrade grub2 | May 15, 2025 | Feb 18, 2025 |
| Dell Powerstore Dsa2025342 | — | Upgrade Dell PowerStoreOS to the latest version | Oct 23, 2025 | Sep 2, 2025 |
| Dell Powerstore Dsa2026039 | — | Upgrade Dell PowerStoreOS to the latest version | Jan 13, 2026 | Jan 6, 2026 |
| Huawei Euleros 2_0_sp12 | — | Upgrade grub2-efi-aa64Upgrade grub2-tools-extraUpgrade grub2-tools-minimalUpgrade grub2-commonUpgrade grub2-efi-aa64-modulesUpgrade grub2-tools | Jun 11, 2025 | Feb 18, 2025 |
| Huawei Euleros 2_0_sp13 | — | Upgrade grub2-tools-minimalUpgrade grub2-efi-x64-modulesUpgrade grub2-pc-modulesUpgrade grub2-efi-x64Upgrade grub2-pcUpgrade grub2-toolsUpgrade grub2-tools-extraUpgrade grub2-tools-efiUpgrade grub2-common | Jul 1, 2025 | Feb 18, 2025 |
| Oracle_linux | — | Upgrade grub2-pcUpgrade grub2-pc-modulesUpgrade grub2-efi-x64-modulesUpgrade grub2-efi-aa64-modulesUpgrade grub2-efi-aa64-cdbootUpgrade grub2-tools-extraUpgrade grub2-efi-aa64Upgrade grub2-commonUpgrade grub2-tools-efiUpgrade grub2-tools-minimalUpgrade grub2-toolsUpgrade grub2-efi-x64-cdbootUpgrade grub2-efi-x64 | May 26, 2025 | Feb 18, 2025 |
| Redhat_linux | — | Upgrade grub2-efi-aa64-modulesUpgrade grub2-pc-modulesUpgrade grub2-debuginfoUpgrade grub2-pcUpgrade grub2-commonUpgrade grub2-ppc64le-modulesNo solution existsUpgrade grub2-efi-x64-modulesUpgrade grub2-debugsourceUpgrade grub2-efi-x64-cdbootUpgrade grub2-tools-efiUpgrade grub2-tools-efi-debuginfoUpgrade grub2-emu-debuginfoUpgrade grub2-efi-x64Upgrade grub2-tools-debuginfoUpgrade grub2-tools-minimal-debuginfoUpgrade grub2-tools-extraUpgrade grub2-tools-extra-debuginfoUpgrade grub2-tools-minimalUpgrade grub2-tools | May 15, 2025 | Feb 18, 2025 |
| Rocky_linux | — | Upgrade grub2-tools-efiUpgrade grub2-tools-extra-debuginfoUpgrade grub2-tools-efi-debuginfoUpgrade grub2-tools-extraUpgrade grub2-tools-debuginfoUpgrade grub2-tools-minimal-debuginfoUpgrade grub2-debugsourceUpgrade grub2-debuginfoUpgrade grub2-toolsUpgrade grub2-pcUpgrade grub2-tools-minimalUpgrade grub2-efi-x64-cdbootUpgrade grub2-efi-x64 | Oct 6, 2025 | Oct 4, 2025 |
| Suse | — | Upgrade grub2-i386-xen-debugUpgrade grub2Upgrade grub2-systemd-sleep-pluginUpgrade grub2-s390x-emuUpgrade grub2-arm64-efi-debugUpgrade grub2-i386-pc-extrasUpgrade grub2-i386-pc-debugUpgrade grub2-powerpc-ieee1275-debugUpgrade grub2-powerpc-ieee1275Upgrade grub2-s390x-emu-debugUpgrade grub2-i386-pcUpgrade grub2-x86_64-xen-extrasUpgrade grub2-commonUpgrade grub2-x86_64-efi-debugUpgrade grub2-x86_64-xen-debugUpgrade grub2-snapper-pluginUpgrade grub2-arm64-efi-extrasUpgrade grub2-x86_64-efiUpgrade grub2-x86_64-efi-extrasUpgrade grub2-x86_64-xenUpgrade grub2-s390x-emu-extrasUpgrade grub2-powerpc-ieee1275-extrasUpgrade grub2-branding-upstreamUpgrade grub2-arm64-efi | Dec 5, 2025 | Apr 10, 2025 |
| Vmware Photon_os | — | Use 'tdnf update' to upgrade all packages to the latest version. | Jul 2, 2025 | Feb 18, 2025 |
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