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Unity Linux 20.1070a Security Update: microcode_ctl (UTSA-2025-991320)

medium Nessus Plugin ID 279529

Synopsis

The Unity Linux host is missing one or more security updates.

Description

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2025-991320 advisory.

 Exposure of Sensitive Information in Shared Microarchitectural Structures during Transient Execution for some Intel(R) Processors may allow an authenticated user to potentially enable information disclosure via local access.

Tenable has extracted the preceding description block directly from the Unity Linux 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 microcode_ctl package.

See Also

https://access.redhat.com/security/cve/CVE-2024-28956

https://nvd.nist.gov/vuln/detail/CVE-2024-28956

http://www.nessus.org/u?874eed81

Plugin Details

Severity: Medium

ID: 279529

File Name: unity_linux_UTSA-2025-991320.nasl

Version: 1.1

Type: local

Published: 12/22/2025

Updated: 12/22/2025

Supported Sensors: Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 5.2

CVSS v2

Risk Factor: Low

Base Score: 3.8

Temporal Score: 2.8

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

CVSS Score Source: CVE-2024-28956

CVSS v3

Risk Factor: Medium

Base Score: 5.6

Temporal Score: 4.9

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

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

CVSS v4

Risk Factor: Medium

Base Score: 5.7

Threat Score: 1.9

Threat Vector: CVSS:4.0/E:U

Vector: CVSS:4.0/AV:L/AC:H/AT:P/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N

Vulnerability Information

Required KB Items: Host/local_checks_enabled, Host/cpu, Host/UOS-Server/release, Host/UOS-Server/rpm-list

Exploit Ease: No known exploits are available

Patch Publication Date: 12/22/2025

Vulnerability Publication Date: 5/13/2025

Reference Information

CVE: CVE-2024-28956