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Unity Linux 20.1070a Security Update: kernel (UTSA-2025-984806)

medium Nessus Plugin ID 266904

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-2025-984806 advisory.

 In the Linux kernel, the following vulnerability has been resolved:

 x86, relocs: Ignore relocations in .notes section

 When building with CONFIG_XEN_PV=y, .text symbols are emitted into the .notes section so that Xen can find the startup_xen entry point.
 This information is used prior to booting the kernel, so relocations are not useful. In fact, performing relocations against the .notes section means that the KASLR base is exposed since /sys/kernel/notes is world-readable.

 To avoid leaking the KASLR base without breaking unprivileged tools that are expecting to read /sys/kernel/notes, skip performing relocations in the .notes section. The values readable in .notes are then identical to those found in System.map.

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.

See Also

http://www.nessus.org/u?a54f68e6

http://www.nessus.org/u?144fab16

https://nvd.nist.gov/vuln/detail/CVE-2024-26816

Plugin Details

Severity: Medium

ID: 266904

File Name: unity_linux_UTSA-2025-984806.nasl

Version: 1.1

Type: local

Published: 10/7/2025

Updated: 10/7/2025

Supported Sensors: Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 4.4

CVSS v2

Risk Factor: Medium

Base Score: 4.6

Temporal Score: 3.4

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

CVSS Score Source: CVE-2024-26816

CVSS v3

Risk Factor: Medium

Base Score: 5.5

Temporal Score: 4.8

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

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

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: 8/14/2025

Vulnerability Publication Date: 4/9/2024

Reference Information

CVE: CVE-2024-26816