Unity Linux 20.1060a / 20.1070a Security Update: kernel (UTSA-2026-002285)

medium Nessus Plugin ID 284904

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-2026-002285 advisory.

crypto/algif_skcipher.c in the Linux kernel before 4.4.2 does not verify that a setkey operation has been performed on an AF_ALG socket before an accept system call is processed, which allows local users to cause a denial of service (NULL pointer dereference and system crash) via a crafted application that does not supply a key, related to the lrw_crypt function in crypto/lrw.c.

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?fb3edcd2

http://www.nessus.org/u?52f799c2

http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.4.2

http://www.openwall.com/lists/oss-security/2016/11/04/3

http://www.securityfocus.com/bid/94217

https://access.redhat.com/errata/RHSA-2017:1842

https://access.redhat.com/errata/RHSA-2017:2077

https://access.redhat.com/errata/RHSA-2017:2437

https://access.redhat.com/errata/RHSA-2017:2444

https://bugzilla.redhat.com/show_bug.cgi?id=1386286

http://www.nessus.org/u?c3738f00

http://www.nessus.org/u?cfe9a813

https://security-tracker.debian.org/tracker/CVE-2015-8970

Plugin Details

Severity: Medium

ID: 284904

File Name: unity_linux_UTSA-2026-002285.nasl

Version: 1.1

Type: local

Published: 1/15/2026

Updated: 1/15/2026

Supported Sensors: Nessus

Risk Information

VPR

Risk Factor: Low

Score: 3.6

CVSS v2

Risk Factor: Medium

Base Score: 4.9

Temporal Score: 3.6

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

CVSS Score Source: CVE-2015-8970

CVSS v3

Risk Factor: Medium

Base Score: 5.5

Temporal Score: 4.8

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: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: 1/15/2026

Vulnerability Publication Date: 11/10/2016

Reference Information

CVE: CVE-2015-8970