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EulerOS 2.0 SP12 : util-linux (EulerOS-SA-2026-4538)

high Nessus Plugin ID 376729

Synopsis

The remote EulerOS host is missing multiple security updates.

Description

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

 A flaw was found in util-linux. Restricted bind mounts take the source path from fstab but do not pin that source before the privileged mount. A local unprivileged user who can replace the authorized source or a writable ancestor can redirect SUID mount(8) to bind another host directory. If the fstab entry also sets X-mount.owner, X-mount.group, or X-mount.mode, root then changes ownership or mode on that redirected inode.(CVE-2026-78410)

 When an /etc/fstab entry is configured with the user or users option, mount(8) validates the target path before performing the mount syscall, creating a Time-of-Check-Time-of-Use (TOCTOU) window. A local unprivileged user with write access to an ancestor directory of the mount target can swap that directory to redirect the mount to an arbitrary root-owned location, potentially escalating privileges to root.(CVE-2026-53613)

Tenable has extracted the preceding description block directly from the EulerOS util-linux 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 util-linux packages.

See Also

http://www.nessus.org/u?84607c5c

Plugin Details

Severity: High

ID: 376729

File Name: EulerOS_SA-2026-4538.nasl

Version: 1.1

Type: Local

Published: 11/6/2026

Updated: 11/6/2026

Supported Sensors: Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 6.9

Percentile: 96.52

CVSS v2

Risk Factor: Medium

Base Score: 6.8

Temporal Score: 5.3

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

CVSS Score Source: CVE-2026-78410

CVSS v3

Risk Factor: High

Base Score: 7.8

Temporal Score: 7

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:P/RL:O/RC:C

Vulnerability Information

CPE: cpe:/o:huawei:euleros:2.0, p-cpe:/a:huawei:euleros:libblkid, p-cpe:/a:huawei:euleros:libfdisk, p-cpe:/a:huawei:euleros:libmount, p-cpe:/a:huawei:euleros:libsmartcols, p-cpe:/a:huawei:euleros:libuuid, p-cpe:/a:huawei:euleros:util-linux-devel, p-cpe:/a:huawei:euleros:util-linux-help, p-cpe:/a:huawei:euleros:util-linux-user, p-cpe:/a:huawei:euleros:util-linux

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 Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 11/5/2026

Vulnerability Publication Date: 6/16/2026

Reference Information

CVE: CVE-2026-53613, CVE-2026-78410