CVE-2025-61663
Medium · 4.9CVSS
4.9
EPSS
0.1%
Published
Nov 18, 2025
CISA due date
—
The record
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 An attacker who can execute this command can force the system to access memory locations that are no longer valid.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.
Affected packages
| Ecosystem | Package | Introduced | Fixed |
|---|---|---|---|
| SUSE:Linux Enterprise Micro 5.2 | grub2 | 0 | 2.04-150300.22.61.1 |
| SUSE:Linux Enterprise Micro 5.5 | grub2 | 0 | 2.06-150500.29.59.1 |
| SUSE:Linux Enterprise Module for Basesystem 15 SP6 | grub2 | 0 | 2.12-150600.8.44.2 |
| SUSE:Linux Enterprise Module for Basesystem 15 SP7 | grub2 | 0 | 2.12-150700.19.19.1 |
| SUSE:Linux Enterprise Module for Server Applications 15 SP6 | grub2 | 0 | 2.12-150600.8.44.2 |
| SUSE:Linux Enterprise Module for Server Applications 15 SP7 | grub2 | 0 | 2.12-150700.19.19.1 |
| openSUSE:Leap 15.6 | grub2 | 0 | 2.12-150600.8.44.2 |
| openSUSE:Leap 16.0 | grub2 | 0 | 2.12-160000.3.1 |
| openSUSE:Tumbleweed | grub2 | 0 | 2.12-67.1 |
Related vulnerabilities
- CVE-2025-61664 A vulnerability in the GRUB2 bootloader has been identified in the normal module. Also affects grub2
- CVE-2025-61662 A Use-After-Free vulnerability has been discovered in GRUB's gettext module. Also affects grub2
- CVE-2025-54771 A use-after-free vulnerability has been identified in the GNU GRUB (Grand Unified… Also affects grub2
- CVE-2025-61661 A vulnerability has been identified in the GRUB (Grand Unified Bootloader) component. Also affects grub2
- CVE-2024-56738 GNU GRUB (aka GRUB2) through 2.12 does not use a constant-time algorithm for… Also affects grub2
- CVE-2024-56737 GNU GRUB (aka GRUB2) through 2.12 has a heap-based buffer overflow in fs/hfs.c via… Also affects grub2
- CVE-2023-4692 An out-of-bounds write flaw was found in grub2's NTFS filesystem driver. Also affects grub2
- CVE-2023-4693 An out-of-bounds read flaw was found on grub2's NTFS filesystem driver. Also affects grub2