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Unity Linux 20.1050e Security Update: kernel (UTSA-2026-007474)

low Nessus Plugin ID 307248

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-2026-007474 advisory.

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

 net: usb: Remove disruptive netif_wake_queue in rtl8150_set_multicast

 syzbot reported WARNING in rtl8150_start_xmit/usb_submit_urb.
 This is the sequence of events that leads to the warning:

 rtl8150_start_xmit() { netif_stop_queue();
 usb_submit_urb(dev->tx_urb);
 }

 rtl8150_set_multicast() { netif_stop_queue();
 netif_wake_queue(); <-- wakes up TX queue before URB is done }

 rtl8150_start_xmit() { netif_stop_queue();
 usb_submit_urb(dev->tx_urb); <-- double submission }

 rtl8150_set_multicast being the ndo_set_rx_mode callback should not be calling netif_stop_queue and notif_start_queue as these handle TX queue synchronization.

 The net core function dev_set_rx_mode handles the synchronization for rtl8150_set_multicast making it safe to remove these locks.

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?faf50319

http://www.nessus.org/u?a9861680

https://nvd.nist.gov/vuln/detail/CVE-2025-40140

Plugin Details

Severity: Low

ID: 307248

File Name: unity_linux_UTSA-2026-007474.nasl

Version: 1.1

Type: Local

Published: 4/17/2026

Updated: 4/17/2026

Supported Sensors: Nessus

Risk Information

VPR

Risk Factor: Low

Score: 3.6

CVSS v2

Risk Factor: Low

Base Score: 1.7

Temporal Score: 1.3

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

CVSS Score Source: CVE-2025-40140

CVSS v3

Risk Factor: Low

Base Score: 3.3

Temporal Score: 2.9

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

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: 4/17/2026

Vulnerability Publication Date: 10/23/2025

Reference Information

CVE: CVE-2025-40140