Unity Linux 20.1070e Security Update: kernel (UTSA-2026-003469)

high Nessus Plugin ID 287877

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-2026-003469 advisory.

The dccp_disconnect function in net/dccp/proto.c in the Linux kernel through 4.14.3 allows local users to gain privileges or cause a denial of service (use-after-free) via an AF_UNSPEC connect system call during the DCCP_LISTEN state.

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?ffe89c50

http://www.nessus.org/u?de58c590

http://lists.openwall.net/netdev/2017/12/04/224

http://www.openwall.com/lists/oss-security/2017/12/05/1

http://www.securityfocus.com/bid/102056

https://access.redhat.com/errata/RHSA-2018:0399

https://access.redhat.com/errata/RHSA-2018:0676

https://access.redhat.com/errata/RHSA-2018:1062

https://access.redhat.com/errata/RHSA-2018:1130

https://access.redhat.com/errata/RHSA-2018:1170

https://access.redhat.com/errata/RHSA-2018:1216

https://access.redhat.com/errata/RHSA-2018:1319

https://access.redhat.com/errata/RHSA-2018:3822

http://www.nessus.org/u?148b2157

https://lists.debian.org/debian-lts-announce/2017/12/msg00004.html

https://security-tracker.debian.org/tracker/CVE-2017-8824

https://usn.ubuntu.com/3581-1/

https://usn.ubuntu.com/3581-2/

https://usn.ubuntu.com/3581-3/

https://usn.ubuntu.com/3582-1/

https://usn.ubuntu.com/3582-2/

https://usn.ubuntu.com/3583-1/

https://usn.ubuntu.com/3583-2/

https://www.debian.org/security/2017/dsa-4073

https://www.debian.org/security/2018/dsa-4082

https://www.exploit-db.com/exploits/43234/

Plugin Details

Severity: High

ID: 287877

File Name: unity_linux_UTSA-2026-003469.nasl

Version: 1.1

Type: local

Published: 1/15/2026

Updated: 1/15/2026

Supported Sensors: Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 6.7

CVSS v2

Risk Factor: High

Base Score: 7.2

Temporal Score: 5.6

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

CVSS Score Source: CVE-2017-8824

CVSS v3

Risk Factor: High

Base Score: 7.8

Temporal Score: 7

Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/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: 1/15/2026

Vulnerability Publication Date: 12/5/2017

Reference Information

CVE: CVE-2017-8824