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CVE-2025-61661

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CVE-2025-61661

Published: Nov 18, 2025

Modified: Dec 19, 2025

PUBLISHED

CVSS v3.1

4.8

MEDIUM

Description

A vulnerability has been identified in the GRUB (Grand Unified Bootloader) component. This flaw occurs because the bootloader mishandles string conversion when reading information from a USB device, allowing an attacker to exploit inconsistent length values. A local attacker can connect a maliciously configured USB device during the boot sequence to trigger this issue. A successful exploitation may lead GRUB to crash, leading to a Denial of Service. Data corruption may be also possible, although given the complexity of the exploit the impact is most likely limited.

VendorProductVersions

GNU

grub2

affected
0 - <= 2.14

Red Hat

Red Hat Enterprise Linux 10

All versions

Red Hat

Red Hat Enterprise Linux 7

All versions

Red Hat

Red Hat Enterprise Linux 8

All versions

Red Hat

Red Hat Enterprise Linux 9

All versions

Red Hat

Red Hat OpenShift Container Platform 4

All versions

Weaknesses (CWE)

CWE-131

CVSS v3.1 Details

CVSS v3.1 Vector

CVSS:3.1/AV:P/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:H

Attack Vector

Physical

Attack Complexity

High

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

Low

Availability

High

References

RHBZ#2413827
issue-tracking
x_refsource_REDHAT

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