Detections
Analytics
Unity Linux 20.1050e / 20.1060e / 20.1070e Security Update: kernel (UTSA-2026-000726)
medium Nessus Plugin ID 290311
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-2026-000726 advisory.The ip6_append_data_mtu function in net/ipv6/ip6_output.c in the IPv6 implementation in the Linux kernel through 3.10.3 does not properly maintain information about whether the IPV6_MTU setsockopt option had been specified, which allows local users to cause a denial of service (BUG and system crash) via a crafted application that uses the UDP_CORK option in a setsockopt system call.
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?dd9d2a86
http://www.nessus.org/u?15083422
http://www.ubuntu.com/usn/USN-1941-1
http://www.ubuntu.com/usn/USN-1942-1
http://www.ubuntu.com/usn/USN-1943-1
http://www.ubuntu.com/usn/USN-1944-1
http://www.ubuntu.com/usn/USN-1945-1
http://www.ubuntu.com/usn/USN-1946-1
http://www.ubuntu.com/usn/USN-1947-1
https://bugzilla.redhat.com/show_bug.cgi?id=987633
http://www.nessus.org/u?001eb7c5
https://security-tracker.debian.org/tracker/CVE-2013-4163
http://www.nessus.org/u?2d86144f
http://www.nessus.org/u?dbdfe758
http://secunia.com/advisories/54148
http://www.openwall.com/lists/oss-security/2013/07/23/10
Plugin Details
Severity: Medium
ID: 290311
File Name: unity_linux_UTSA-2026-000726.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: 4.7
Temporal Score: 3.7
Vector: CVSS2#AV:L/AC:M/Au:N/C:N/I:N/A:C
CVSS Score Source: CVE-2013-4163
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: 7/23/2013
Reference Information
CVE: CVE-2013-4163