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Unity Linux 20.1070e Security Update: kernel (UTSA-2025-987694)

medium Nessus Plugin ID 271077

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-2025-987694 advisory.

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

 driver core: Fix wait_for_device_probe() & deferred_probe_timeout interaction

 Mounting NFS rootfs was timing out when deferred_probe_timeout was non-zero [1]. This was because ip_auto_config() initcall times out waiting for the network interfaces to show up when deferred_probe_timeout was non-zero. While ip_auto_config() calls wait_for_device_probe() to make sure any currently running deferred probe work or asynchronous probe finishes, that wasn't sufficient to account for devices being deferred until deferred_probe_timeout.

 Commit 35a672363ab3 (driver core: Ensure wait_for_device_probe() waits until the deferred_probe_timeout fires) tried to fix that by making sure wait_for_device_probe() waits for deferred_probe_timeout to expire before returning.

 However, if wait_for_device_probe() is called from the kernel_init() context:

 - Before deferred_probe_initcall() [2], it causes the boot process to hang due to a deadlock.

 - After deferred_probe_initcall() [3], it blocks kernel_init() from continuing till deferred_probe_timeout expires and beats the point of deferred_probe_timeout that's trying to wait for userspace to load modules.

 Neither of this is good. So revert the changes to wait_for_device_probe().

 [1] - https://lore.kernel.org/lkml/TYAPR01MB45443DF63B9EF29054F7C41FD8C60@TYAPR01MB4544.jpnprd01.prod.outl ook.com/ [2] - https://lore.kernel.org/lkml/[email protected]/ [3] - https://lore.kernel.org/lkml/[email protected]/

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?af696085

http://www.nessus.org/u?5decce33

https://nvd.nist.gov/vuln/detail/CVE-2022-49379

Plugin Details

Severity: Medium

ID: 271077

File Name: unity_linux_UTSA-2025-987694.nasl

Version: 1.1

Type: local

Published: 10/21/2025

Updated: 10/21/2025

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-2022-49379

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: 10/15/2025

Vulnerability Publication Date: 7/15/2022

Reference Information

CVE: CVE-2022-49379