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Unity Linux 20.1050e Security Update: kernel (UTSA-2026-021557)
medium Nessus Plugin ID 315895
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-2026-021557 advisory.In the Linux kernel, the following vulnerability has been resolved:
kprobes: Fix check for probe enabled in kill_kprobe()
In kill_kprobe(), the check whether disarm_kprobe_ftrace() needs to be called always fails. This is because before that we set the KPROBE_FLAG_GONE flag for kprobe so that !kprobe_disabled(p) is always false.
The disarm_kprobe_ftrace() call introduced by commit:
0cb2f1372baa (kprobes: Fix NULL pointer dereference at kprobe_ftrace_handler)
to fix the NULL pointer reference problem. When the probe is enabled, if we do not disarm it, this problem still exists.
Fix it by putting the probe enabled check before setting the KPROBE_FLAG_GONE flag.
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?10ae72a2
Plugin Details
Severity: Medium
ID: 315895
File Name: unity_linux_UTSA-2026-021557.nasl
Version: 1.1
Type: Local
Published: 5/20/2026
Updated: 5/20/2026
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-2022-50266
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/UOS-Server/release, Host/UOS-Server/rpm-list, Host/cpu
Exploit Ease: No known exploits are available
Patch Publication Date: 5/21/2026
Vulnerability Publication Date: 9/15/2025
Reference Information
CVE: CVE-2022-50266