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Unity Linux 20.1060e / 20.1070e Security Update: kernel (UTSA-2025-992636)

medium Nessus Plugin ID 280324

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-2025-992636 advisory.

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

 pwm: mediatek: Prevent divide-by-zero in pwm_mediatek_config()

 With CONFIG_COMPILE_TEST && !CONFIG_HAVE_CLK, pwm_mediatek_config() has a divide-by-zero in the following line:

 do_div(resolution, clk_get_rate(pc->clk_pwms[pwm->hwpwm]));

 due to the fact that the !CONFIG_HAVE_CLK version of clk_get_rate() returns zero.

 This is presumably just a theoretical problem: COMPILE_TEST overrides the dependency on RALINK which would select COMMON_CLK. Regardless it's a good idea to check for the error explicitly to avoid divide-by-zero.

 Fixes the following warning:

 drivers/pwm/pwm-mediatek.o: warning: objtool: .text: unexpected end of section

 [ukleinek: s/CONFIG_CLK/CONFIG_HAVE_CLK/]

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?d38d1ccd

http://www.nessus.org/u?f9c7ea0e

https://nvd.nist.gov/vuln/detail/CVE-2025-37850

Plugin Details

Severity: Medium

ID: 280324

File Name: unity_linux_UTSA-2025-992636.nasl

Version: 1.1

Type: local

Published: 12/30/2025

Updated: 12/30/2025

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-2025-37850

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/UOS-Server/release, Host/UOS-Server/rpm-list, Host/cpu

Exploit Ease: No known exploits are available

Patch Publication Date: 12/30/2025

Vulnerability Publication Date: 5/5/2025

Reference Information

CVE: CVE-2025-37850