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Unity Linux 20.1050e / 20.1060e / 20.1070e Security Update: kernel (UTSA-2026-000863)

medium Nessus Plugin ID 290606

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-2026-000863 advisory.

 Use-after-free vulnerability in net/unix/af_unix.c in the Linux kernel before 4.3.3 allows local users to bypass intended AF_UNIX socket permissions or cause a denial of service (panic) via crafted epoll_ctl calls.

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?bcc49860

http://www.nessus.org/u?e3bb9cdd

http://www.nessus.org/u?247397d3

http://www.nessus.org/u?242af851

http://www.nessus.org/u?714e00ab

http://www.nessus.org/u?b8fc8d7d

http://www.nessus.org/u?de19363d

http://www.nessus.org/u?0864cf24

http://www.nessus.org/u?0e6da73c

http://www.nessus.org/u?6104ef52

http://www.nessus.org/u?fb99f961

http://www.nessus.org/u?470c7630

http://www.nessus.org/u?022fd87d

http://www.nessus.org/u?379090f6

http://www.nessus.org/u?30ff9fab

http://www.nessus.org/u?447aad90

http://www.nessus.org/u?9e754eed

http://www.nessus.org/u?fb21a1dc

http://www.nessus.org/u?7c6551a4

http://www.nessus.org/u?63543baf

http://www.nessus.org/u?aa5695a5

http://www.nessus.org/u?afcb7ab2

http://www.nessus.org/u?5ec8e3dd

http://www.nessus.org/u?e123b662

http://www.nessus.org/u?eaf5c24a

http://www.nessus.org/u?ee73029a

http://www.nessus.org/u?8ac2d837

http://www.nessus.org/u?ab01c8dc

http://www.nessus.org/u?d2748b1a

http://www.nessus.org/u?0cf201ca

http://www.nessus.org/u?0dcf7931

http://www.nessus.org/u?740c14a3

http://www.debian.org/security/2015/dsa-3426

http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.3.3

http://www.openwall.com/lists/oss-security/2015/11/18/16

http://www.securityfocus.com/bid/77638

http://www.securitytracker.com/id/1034557

http://www.spinics.net/lists/netdev/msg318826.html

http://www.ubuntu.com/usn/USN-2886-1

http://www.ubuntu.com/usn/USN-2887-1

http://www.ubuntu.com/usn/USN-2887-2

http://www.ubuntu.com/usn/USN-2888-1

http://www.ubuntu.com/usn/USN-2889-1

http://www.ubuntu.com/usn/USN-2889-2

http://www.ubuntu.com/usn/USN-2890-1

http://www.ubuntu.com/usn/USN-2890-2

http://www.ubuntu.com/usn/USN-2890-3

https://bugzilla.redhat.com/show_bug.cgi?id=1282688

https://forums.grsecurity.net/viewtopic.php?f=3&t=4150

http://www.nessus.org/u?1571cdff

http://www.nessus.org/u?c1c89957

https://lkml.org/lkml/2013/10/14/424

https://lkml.org/lkml/2014/5/15/532

https://lkml.org/lkml/2015/9/13/195

https://security-tracker.debian.org/tracker/CVE-2013-7446

Plugin Details

Severity: Medium

ID: 290606

File Name: unity_linux_UTSA-2026-000863.nasl

Version: 1.1

Type: local

Published: 1/16/2026

Updated: 1/16/2026

Supported Sensors: Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 5.0

CVSS v2

Risk Factor: Medium

Base Score: 5.4

Temporal Score: 4.2

Vector: CVSS2#AV:L/AC:M/Au:N/C:N/I:P/A:C

CVSS Score Source: CVE-2013-7446

CVSS v3

Risk Factor: Medium

Base Score: 5.3

Temporal Score: 4.8

Vector: CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:L/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: 9/10/2015

Reference Information

CVE: CVE-2013-7446