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EulerOS Virtualization 2.15.0 : python-filelock (EulerOS-SA-2026-4612)

medium Nessus Plugin ID 377240

Synopsis

The remote EulerOS Virtualization host is missing a security update.

Description

According to the versions of the python-filelock package installed, the EulerOS Virtualization installation on the remote host is affected by the following vulnerabilities :

 filelock is a platform-independent file lock for Python. Prior to version 3.20.3, a TOCTOU race condition vulnerability exists in the SoftFileLock implementation of the filelock package. An attacker with local filesystem access and permission to create symlinks can exploit a race condition between the permission validation and file creation to cause lock operations to fail or behave unexpectedly. The vulnerability occurs in the _acquire() method between raise_on_not_writable_file() (permission check) and os.open() (file creation). During this race window, an attacker can create a symlink at the lock file path, potentially causing the lock to operate on an unintended target file or leading to denial of service. This issue has been patched in version 3.20.3.(CVE-2026-22701)

Tenable has extracted the preceding description block directly from the EulerOS Virtualization python-filelock security advisory.

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

Solution

Update the affected python-filelock packages.

See Also

http://www.nessus.org/u?1c60d7a1

Plugin Details

Severity: Medium

ID: 377240

File Name: EulerOS_SA-2026-4612.nasl

Version: 1.1

Type: Local

Published: 11/7/2026

Updated: 11/7/2026

Supported Sensors: Nessus

Risk Information

VPR

Risk Factor: Low

Score: 3.5

Percentile: 52.03

CVSS v2

Risk Factor: Medium

Base Score: 4.5

Temporal Score: 3.3

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

CVSS Score Source: CVE-2026-22701

CVSS v3

Risk Factor: Medium

Base Score: 5.3

Temporal Score: 4.6

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

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

Vulnerability Information

CPE: cpe:/o:huawei:euleros:uvp:2.15.0, p-cpe:/a:huawei:euleros:python3-filelock

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

Exploit Ease: No known exploits are available

Patch Publication Date: 11/5/2026

Vulnerability Publication Date: 1/10/2026

Reference Information

CVE: CVE-2026-22701