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Unity Linux 20.1070e Security Update: kernel (UTSA-2025-990779)

medium Nessus Plugin ID 275113

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-2025-990779 advisory.

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

 net: stmmac: Fix zero-division error when disabling tc cbs

 The commit b8c43360f6e4 (net: stmmac: No need to calculate speed divider when offload is disabled) allows the port_transmit_rate_kbps to be set to a value of 0, which is then passed to the div_s64 function when tc-cbs is disabled. This leads to a zero-division error.

 When tc-cbs is disabled, the idleslope, sendslope, and credit values the credit values are not required to be configured. Therefore, adding a return statement after setting the txQ mode to DCB when tc-cbs is disabled would prevent a zero-division error.

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?2a6b323e

http://www.nessus.org/u?c6592cce

https://nvd.nist.gov/vuln/detail/CVE-2024-49977

Plugin Details

Severity: Medium

ID: 275113

File Name: unity_linux_UTSA-2025-990779.nasl

Version: 1.1

Type: local

Published: 11/12/2025

Updated: 11/12/2025

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-2024-49977

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: 11/12/2025

Vulnerability Publication Date: 4/9/2024

Reference Information

CVE: CVE-2024-49977