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EulerOS 2.0 SP13 : grub2 (EulerOS-SA-2026-1210)

medium Nessus Plugin ID 297605

Synopsis

The remote EulerOS host is missing multiple security updates.

Description

According to the versions of the grub2 packages installed, the EulerOS installation on the remote host is affected by the following vulnerabilities :

 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.(CVE-2025-61661)

 A Use-After-Free vulnerability has been discovered in GRUB's gettext module. This flaw stems from a programming error where the gettext command remains registered in memory after its module is unloaded. An attacker can exploit this condition by invoking the orphaned command, causing the application to access a memory location that is no longer valid. An attacker could exploit this vulnerability to cause grub to crash, leading to a Denial of Service. Possible data integrity or confidentiality compromise is not discarded.(CVE-2025-61662)

 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)

 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 An attacker who can execute this command can force the system to access memory locations that are no longer valid.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.(CVE-2025-61663)

Tenable has extracted the preceding description block directly from the EulerOS grub2 security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

Solution

Update the affected grub2 packages.

See Also

http://www.nessus.org/u?322d9aca

Plugin Details

Severity: Medium

ID: 297605

File Name: EulerOS_SA-2026-1210.nasl

Version: 1.1

Type: local

Published: 2/2/2026

Updated: 2/2/2026

Supported Sensors: Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 5.9

CVSS v2

Risk Factor: Medium

Base Score: 6.8

Temporal Score: 5

Vector: CVSS2#AV:L/AC:L/Au:S/C:C/I:C/A:C

CVSS Score Source: CVE-2025-61662

CVSS v3

Risk Factor: Medium

Base Score: 4.8

Temporal Score: 4.2

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

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

CVSS Score Source: CVE-2025-61661

Vulnerability Information

CPE: p-cpe:/a:huawei:euleros:grub2-pc-modules, p-cpe:/a:huawei:euleros:grub2-tools-extra, p-cpe:/a:huawei:euleros:grub2-tools-minimal, p-cpe:/a:huawei:euleros:grub2-pc, p-cpe:/a:huawei:euleros:grub2-common, cpe:/o:huawei:euleros:2.0, p-cpe:/a:huawei:euleros:grub2-efi-x64, p-cpe:/a:huawei:euleros:grub2-efi-x64-modules, p-cpe:/a:huawei:euleros:grub2-tools-efi, p-cpe:/a:huawei:euleros:grub2-tools

Required KB Items: Host/local_checks_enabled, Host/cpu, Host/EulerOS/release, Host/EulerOS/rpm-list, Host/EulerOS/sp

Excluded KB Items: Host/EulerOS/uvp_version

Exploit Ease: No known exploits are available

Patch Publication Date: 2/2/2026

Vulnerability Publication Date: 11/18/2025

Reference Information

CVE: CVE-2025-61661, CVE-2025-61662, CVE-2025-61663, CVE-2025-61664