Detections
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Ubuntu 18.04 LTS / 20.04 LTS / 22.04 LTS / 24.04 LTS : Filelock vulnerabilities (USN-7999-1)

medium Nessus Plugin ID 297797

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Synopsis

The remote Ubuntu host is missing one or more security updates.

Description

The remote Ubuntu 18.04 LTS / 20.04 LTS / 22.04 LTS / 24.04 LTS host has packages installed that are affected by multiple vulnerabilities as referenced in the USN-7999-1 advisory.

 It was discovered that Filelock incorrectly handled symlinks in temp files. A local attacker could possibly use this issue to cause lock operations to fail or behave unexpectedly. (CVE-2026-22701)

 It was discovered that the file locking implementation in the Filelock package contained a race condition.
 A local attacker could possibly use this to cause a denial of service or corrupt arbitrary user files.
 (CVE-2025-68146)

Tenable has extracted the preceding description block directly from the Ubuntu 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 python-filelock and / or python3-filelock packages.

See Also

https://ubuntu.com/security/notices/USN-7999-1

Plugin Details

Severity: Medium

ID: 297797

File Name: ubuntu_USN-7999-1.nasl

Version: 1.1

Type: local

Agent: unix

Published: 2/4/2026

Updated: 2/4/2026

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

Risk Information

VPR

Risk Factor: Medium

Score: 6.0

CVSS v2

Risk Factor: Medium

Base Score: 5.5

Temporal Score: 4.1

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

CVSS Score Source: CVE-2025-68146

CVSS v3

Risk Factor: Medium

Base Score: 6.3

Temporal Score: 5.5

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

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

Vulnerability Information

CPE: p-cpe:/a:canonical:ubuntu_linux:python-filelock, p-cpe:/a:canonical:ubuntu_linux:python3-filelock, cpe:/o:canonical:ubuntu_linux:20.04:-:lts, cpe:/o:canonical:ubuntu_linux:24.04:-:lts, cpe:/o:canonical:ubuntu_linux:18.04:-:lts, cpe:/o:canonical:ubuntu_linux:22.04:-:lts

Required KB Items: Host/cpu, Host/Ubuntu, Host/Ubuntu/release, Host/Debian/dpkg-l

Exploit Ease: No known exploits are available

Patch Publication Date: 2/2/2026

Vulnerability Publication Date: 12/16/2025

Reference Information

CVE: CVE-2025-68146, CVE-2026-22701

USN: 7999-1