Detections
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Unity Linux 20.1070e Security Update: kernel (UTSA-2026-013229)
medium Nessus Plugin ID 308079
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-2026-013229 advisory.In the Linux kernel, the following vulnerability has been resolved:
netfilter: nf_tables: fix memleak when more than 255 elements expired
When more than 255 elements expired we're supposed to switch to a new gc container structure.
This never happens: u8 type will wrap before reaching the boundary and nft_trans_gc_space() always returns true.
This means we recycle the initial gc container structure and lose track of the elements that came before.
While at it, don't deref 'gc' after we've passed it to call_rcu.
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?2753ba82
Plugin Details
Severity: Medium
ID: 308079
File Name: unity_linux_UTSA-2026-013229.nasl
Version: 1.1
Type: Local
Published: 4/21/2026
Updated: 4/21/2026
Supported Sensors: Nessus
Risk Information
VPR
Risk Factor: Medium
Score: 5.2
CVSS v2
Risk Factor: Medium
Base Score: 6
Temporal Score: 4.4
Vector: CVSS2#AV:L/AC:H/Au:S/C:C/I:C/A:C
CVSS Score Source: CVE-2023-52581
CVSS v3
Risk Factor: Medium
Base Score: 6.3
Temporal Score: 5.5
Vector: CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:H/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: 4/21/2026
Vulnerability Publication Date: 10/10/2023
Reference Information
CVE: CVE-2023-52581