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Unity Linux 20.1050e Security Update: kernel (UTSA-2026-007477)
medium Nessus Plugin ID 307141
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-2026-007477 advisory.In the Linux kernel, the following vulnerability has been resolved:
ext4: always panic when errors=panic is specified
Before commit 014c9caa29d3 (ext4: make ext4_abort() use
__ext4_error()), the following series of commands would trigger a panic:
1. mount /dev/sda -o ro,errors=panic test 2. mount /dev/sda -o remount,abort test
After commit 014c9caa29d3, remounting a file system using the test mount option abort will no longer trigger a panic. This commit will restore the behaviour immediately before commit 014c9caa29d3.
(However, note that the Linux kernel's behavior has not been consistent; some previous kernel versions, including 5.4 and 4.19 similarly did not panic after using the mount option abort.)
This also makes a change to long-standing behaviour; namely, the following series commands will now cause a panic, when previously it did not:
1. mount /dev/sda -o ro,errors=panic test 2. echo test > /sys/fs/ext4/sda/trigger_fs_error
However, this makes ext4's behaviour much more consistent, so this is a good thing.
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?7f4714ff
Plugin Details
Severity: Medium
ID: 307141
File Name: unity_linux_UTSA-2026-007477.nasl
Version: 1.1
Type: Local
Published: 4/17/2026
Updated: 4/17/2026
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-2021-46945
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: 4/17/2026
Vulnerability Publication Date: 2/27/2024
Reference Information
CVE: CVE-2021-46945