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Linux Distros Unpatched Vulnerability : CVE-2025-61664

high Nessus Plugin ID 275740

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Synopsis

The Linux/Unix host has one or more packages installed with a vulnerability that the vendor indicates will not be patched.

Description

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available.

 - 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. (CVE-2025-61664)

Note that Nessus relies on the presence of the package as reported by the vendor.

Solution

There is no known solution at this time.

See Also

https://access.redhat.com/security/cve/cve-2025-61664

https://security-tracker.debian.org/tracker/CVE-2025-61664

https://ubuntu.com/security/CVE-2025-61664

Plugin Details

Severity: High

ID: 275740

File Name: unpatched_CVE_2025_61664.nasl

Version: 1.2

Type: local

Agent: unix

Family: Misc.

Published: 11/18/2025

Updated: 11/19/2025

Supported Sensors: Frictionless Assessment AWS, Frictionless Assessment Azure, Frictionless Assessment Agent, Nessus Agent, Agentless Assessment, Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 6.7

CVSS v2

Risk Factor: Medium

Base Score: 6.6

Temporal Score: 5.6

Vector: CVSS2#AV:L/AC:M/Au:N/C:C/I:C/A:P

CVSS Score Source: CVE-2025-61664

CVSS v3

Risk Factor: High

Base Score: 7.8

Temporal Score: 7.1

Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Temporal Vector: CVSS:3.0/E:U/RL:U/RC:C

Vulnerability Information

CPE: p-cpe:/a:centos:centos:grub2-ppc64le-modules, cpe:/o:centos:centos:8, p-cpe:/a:redhat:enterprise_linux:grub2-ppc-modules, p-cpe:/a:debian:debian_linux:grub2, cpe:/o:debian:debian_linux:14.0, p-cpe:/a:centos:centos:grub2-efi-ia32, cpe:/o:debian:debian_linux:11.0, p-cpe:/a:centos:centos:grub2-efi-aa64, p-cpe:/a:centos:centos:grub2-efi-x64-cdboot, p-cpe:/a:centos:centos:grub2-tools-efi, p-cpe:/a:centos:centos:grub2-efi-x64-modules, cpe:/o:canonical:ubuntu_linux:24.04:-:lts, p-cpe:/a:redhat:enterprise_linux:grub2-tools-extra, p-cpe:/a:centos:centos:grub2-tools-minimal, cpe:/o:centos:centos:7, p-cpe:/a:redhat:enterprise_linux:grub2-pc-modules, p-cpe:/a:redhat:enterprise_linux:grub2-efi-modules, p-cpe:/a:centos:centos:grub2-ppc64le, cpe:/o:redhat:enterprise_linux:8, cpe:/o:redhat:enterprise_linux:10, p-cpe:/a:centos:centos:grub2-tools-extra, p-cpe:/a:redhat:enterprise_linux:grub2-efi-ia32, p-cpe:/a:redhat:enterprise_linux:grub2-ppc64le, p-cpe:/a:redhat:enterprise_linux:grub2-efi, p-cpe:/a:centos:centos:grub2-efi, cpe:/o:canonical:ubuntu_linux:25.10, p-cpe:/a:centos:centos:grub2-efi-ia32-cdboot, cpe:/o:debian:debian_linux:13.0, p-cpe:/a:redhat:enterprise_linux:grub2-common, p-cpe:/a:centos:centos:grub2-ppc-modules, p-cpe:/a:canonical:ubuntu_linux:grub2-signed, p-cpe:/a:centos:centos:grub2-pc, cpe:/o:canonical:ubuntu_linux:16.04:-:lts, cpe:/o:canonical:ubuntu_linux:22.04:-:lts, p-cpe:/a:centos:centos:grub2-tools, p-cpe:/a:centos:centos:grub2-ppc64, p-cpe:/a:centos:centos:grub2-efi-aa64-modules, p-cpe:/a:redhat:enterprise_linux:grub2-efi-aa64-cdboot, p-cpe:/a:centos:centos:grub2-ppc64-modules, cpe:/o:canonical:ubuntu_linux:18.04:-:lts, p-cpe:/a:centos:centos:grub2, cpe:/o:canonical:ubuntu_linux:25.04, cpe:/o:redhat:enterprise_linux:7, p-cpe:/a:redhat:enterprise_linux:grub2-ppc64le-modules, p-cpe:/a:redhat:enterprise_linux:grub2-efi-x64-cdboot, cpe:/o:redhat:enterprise_linux:9, p-cpe:/a:redhat:enterprise_linux:grub2-tools-minimal, p-cpe:/a:centos:centos:grub2-efi-ia32-modules, p-cpe:/a:redhat:enterprise_linux:grub2-efi-x64, p-cpe:/a:redhat:enterprise_linux:grub2-efi-aa64-modules, cpe:/o:canonical:ubuntu_linux:14.04:-:lts, p-cpe:/a:redhat:enterprise_linux:grub2, p-cpe:/a:redhat:enterprise_linux:grub2-efi-ia32-cdboot, p-cpe:/a:centos:centos:grub2-efi-x64, p-cpe:/a:centos:centos:grub2-efi-modules, p-cpe:/a:redhat:enterprise_linux:grub2-ppc64, p-cpe:/a:canonical:ubuntu_linux:grub2, p-cpe:/a:redhat:enterprise_linux:grub2-tools, p-cpe:/a:centos:centos:grub2-efi-aa64-cdboot, p-cpe:/a:redhat:enterprise_linux:grub2-efi-aa64, p-cpe:/a:redhat:enterprise_linux:grub2-ppc64-modules, p-cpe:/a:redhat:enterprise_linux:grub2-pc, p-cpe:/a:redhat:enterprise_linux:grub2-efi-x64-modules, cpe:/o:canonical:ubuntu_linux:20.04:-:lts, p-cpe:/a:centos:centos:grub2-common, cpe:/o:debian:debian_linux:12.0, p-cpe:/a:redhat:enterprise_linux:grub2-efi-ia32-modules, p-cpe:/a:centos:centos:grub2-pc-modules, p-cpe:/a:redhat:enterprise_linux:grub2-tools-efi, p-cpe:/a:canonical:ubuntu_linux:grub2-unsigned

Required KB Items: Host/local_checks_enabled, Host/cpu, global_settings/vendor_unpatched, Host/OS/identifier

Exploit Ease: No known exploits are available

Vulnerability Publication Date: 11/18/2025

Reference Information

CVE: CVE-2025-61664