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Unity Linux 20.1050e Security Update: kernel (UTSA-2026-006820)

medium Nessus Plugin ID 305418

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-2026-006820 advisory.

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

 of: dynamic: Synchronize of_changeset_destroy() with the devlink removals

 In the following sequence:
 1) of_platform_depopulate() 2) of_overlay_remove()

 During the step 1, devices are destroyed and devlinks are removed.
 During the step 2, OF nodes are destroyed but
 __of_changeset_entry_destroy() can raise warnings related to missing of_node_put():
 ERROR: memory leak, expected refcount 1 instead of 2 ...

 Indeed, during the devlink removals performed at step 1, the removal itself releasing the device (and the attached of_node) is done by a job queued in a workqueue and so, it is done asynchronously with respect to function calls.
 When the warning is present, of_node_put() will be called but wrongly too late from the workqueue job.

 In order to be sure that any ongoing devlink removals are done before the of_node destruction, synchronize the of_changeset_destroy() with the devlink removals.

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 kernel package.

See Also

http://www.nessus.org/u?f3ebae6b

http://www.nessus.org/u?fc48dae9

https://nvd.nist.gov/vuln/detail/CVE-2024-35879

Plugin Details

Severity: Medium

ID: 305418

File Name: unity_linux_UTSA-2026-006820.nasl

Version: 1.1

Type: Local

Published: 4/8/2026

Updated: 4/8/2026

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-2024-35879

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: 4/8/2026

Vulnerability Publication Date: 5/18/2024

Reference Information

CVE: CVE-2024-35879