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.

This vulnerability has been rated as have the impact of Moderate by the Red Hat Product Security team. This decision was made based in the fact an attacker needs local or physical access to the machine, to execute the normal_exit command after it was unloaded. Additionally the most likely outcome from an successful attack is a Denial of Crash by leading the grub2 to crash.

The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.

There is no known mitigation available for this vulnerability.