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Unity Linux 20.1050a Security Update: kernel (UTSA-2026-098687)

medium Nessus Plugin ID 340228

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-2026-098687 advisory.

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

 usb: dwc3: Remove WARN_ON for device endpoint command timeouts

 This commit addresses a rarely observed endpoint command timeout which causes kernel panic due to warn when 'panic_on_warn' is enabled and unnecessary call trace prints when 'panic_on_warn' is disabled.
 It is seen during fast software-controlled connect/disconnect testcases.
 The following is one such endpoint command timeout that we observed:

 1. Connect =======
 ->dwc3_thread_interrupt
 ->dwc3_ep0_interrupt
 ->configfs_composite_setup
 ->composite_setup
 ->usb_ep_queue
 ->dwc3_gadget_ep0_queue
 ->__dwc3_gadget_ep0_queue
 ->__dwc3_ep0_do_control_data
 ->dwc3_send_gadget_ep_cmd

 2. Disconnect ==========
 ->dwc3_thread_interrupt
 ->dwc3_gadget_disconnect_interrupt
 ->dwc3_ep0_reset_state
 ->dwc3_ep0_end_control_data
 ->dwc3_send_gadget_ep_cmd

 In the issue scenario, in Exynos platforms, we observed that control transfers for the previous connect have not yet been completed and end transfer command sent as a part of the disconnect sequence and processing of USB_ENDPOINT_HALT feature request from the host timeout.
 This maybe an expected scenario since the controller is processing EP commands sent as a part of the previous connect. It maybe better to remove WARN_ON in all places where device endpoint commands are sent to avoid unnecessary kernel panic due to warn.

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

https://nvd.nist.gov/vuln/detail/CVE-2025-39801

http://www.nessus.org/u?8662a8c4

http://www.nessus.org/u?ab78a041

Plugin Details

Severity: Medium

ID: 340228

File Name: unity_linux_UTSA-2026-098687.nasl

Version: 1.1

Type: Local

Published: 8/26/2026

Updated: 8/26/2026

Supported Sensors: Nessus

Risk Information

VPR

Risk Factor: Low

Score: 3

Percentile: 23.42

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-2025-39801

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: 8/10/2026

Vulnerability Publication Date: 9/15/2025

Reference Information

CVE: CVE-2025-39801