Detections
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Unity Linux 20.1050e / 20.1060e / 20.1070e Security Update: kernel (UTSA-2026-000543)
medium Nessus Plugin ID 290971
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-2026-000543 advisory.The apic_get_tmcct function in arch/x86/kvm/lapic.c in the KVM subsystem in the Linux kernel through 3.12.5 allows guest OS users to cause a denial of service (divide-by-zero error and host OS crash) via crafted modifications of the TMICT value.
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.ubuntu.com/usn/USN-2128-1
http://www.ubuntu.com/usn/USN-2129-1
http://www.ubuntu.com/usn/USN-2135-1
http://www.ubuntu.com/usn/USN-2136-1
http://www.ubuntu.com/usn/USN-2138-1
http://www.ubuntu.com/usn/USN-2139-1
http://www.ubuntu.com/usn/USN-2141-1
https://bugzilla.redhat.com/show_bug.cgi?id=1032207
http://www.nessus.org/u?586d93db
https://security-tracker.debian.org/tracker/CVE-2013-6367
https://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.2.54
http://www.nessus.org/u?ec81da91
http://www.nessus.org/u?35a8ce8c
http://www.nessus.org/u?c7675788
http://www.nessus.org/u?9933acc0
http://lists.opensuse.org/opensuse-updates/2014-02/msg00045.html
http://rhn.redhat.com/errata/RHSA-2013-1801.html
http://rhn.redhat.com/errata/RHSA-2014-0163.html
http://rhn.redhat.com/errata/RHSA-2014-0284.html
http://www.openwall.com/lists/oss-security/2013/12/12/12
http://www.securityfocus.com/bid/64270
http://www.ubuntu.com/usn/USN-2109-1
http://www.ubuntu.com/usn/USN-2110-1
Plugin Details
Severity: Medium
ID: 290971
File Name: unity_linux_UTSA-2026-000543.nasl
Version: 1.1
Type: local
Published: 1/16/2026
Updated: 1/16/2026
Supported Sensors: Nessus
Risk Information
VPR
Risk Factor: Medium
Score: 4.4
CVSS v2
Risk Factor: Medium
Base Score: 5.7
Temporal Score: 4.5
Vector: CVSS2#AV:A/AC:M/Au:N/C:N/I:N/A:C
CVSS Score Source: CVE-2013-6367
CVSS v3
Risk Factor: Medium
Base Score: 5.5
Temporal Score: 5
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:P/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 Available: true
Exploit Ease: Exploits are available
Patch Publication Date: 1/14/2026
Vulnerability Publication Date: 12/12/2013
Reference Information
CVE: CVE-2013-6367