CVE-2025-61664

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 v3 4.9 MEDIUM

4.9^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 1.4 / Impact : 3.4

Attack Vector LOCAL

Attack Complexity HIGH

Privileges Required NONE

User Interaction NONE

Confidentiality Impact LOW

Integrity Impact LOW

Availability Impact LOW

Scope UNCHANGED

References

Link	Resource
https://access.redhat.com/security/cve/CVE-2025-61664
https://bugzilla.redhat.com/show_bug.cgi?id=2414685
https://lists.gnu.org/archive/html/grub-devel/2025-11/msg00155.html

Configurations

No configuration.

History

18 Oct 2026, 20:10

Type	Values Removed	Values Added
Summary		(es) Una vulnerabilidad en el gestor de arranque GRUB2 ha sido identificada en el módulo normal. Este fallo, un problema de “Use After Free” de memoria, ocurre porque el comando normal_exit no se desregistra correctamente cuando su módulo relacionado es descargado. Un atacante puede explotar esta condición al invocar el comando después de que el módulo ha sido eliminado, causando que el sistema acceda de forma inapropiada a una ubicación de memoria previamente liberada. Esto lleva a una caída del sistema o posibles impactos en la confidencialidad e integridad de los datos.

Information

Published : 2025-11-18 19:15

Updated : 2026-10-18 20:10

NVD link : CVE-2025-61664

Mitre link : CVE-2025-61664

CVE.ORG link : CVE-2025-61664

JSON object : View

Products Affected

No product.

CWE

CWE-825

Expired Pointer Dereference

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