Detections
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Fedora 43 : util-linux (2026-a7ff7017ee)

high Nessus Plugin ID 323123

Synopsis

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

Description

The remote Fedora 43 host has a package installed that is affected by multiple vulnerabilities as referenced in the FEDORA-2026-a7ff7017ee advisory.

 upstream upgrade with security fixes:

 - CVE-2026-53612 - libmount: TOCTOU attack via ancestor directory swap during mount
 - CVE-2026-53613 - libmount: SUID bypass via LIBMOUNT_FORCE_MOUNT2 and legacy mount path
 - CVE-2026-53614 - libmount: fd_target TOCTOU prevention


Tenable has extracted the preceding description block directly from the Fedora 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 package.

See Also

https://bodhi.fedoraproject.org/updates/FEDORA-2026-a7ff7017ee

Plugin Details

Severity: High

ID: 323123

File Name: fedora_2026-a7ff7017ee.nasl

Version: 1.1

Type: Local

Agent: unix

Published: 6/26/2026

Updated: 6/26/2026

Supported Sensors: Nessus Agent, Continuous Assessment, Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 5.9

CVSS v2

Risk Factor: Medium

Base Score: 4.6

Temporal Score: 3.4

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

CVSS Score Source: CVE-2026-53614

CVSS v3

Risk Factor: High

Base Score: 7.8

Temporal Score: 6.8

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:O/RC:C

Vulnerability Information

CPE: p-cpe:/a:fedoraproject:fedora:util-linux, cpe:/o:fedoraproject:fedora:43

Required KB Items: Host/local_checks_enabled, Host/RedHat/release, Host/RedHat/rpm-list

Exploit Ease: No known exploits are available

Patch Publication Date: 6/16/2026

Vulnerability Publication Date: 6/16/2026

Reference Information

CVE: CVE-2026-53612, CVE-2026-53613, CVE-2026-53614