Unity Linux 20.1050e / 20.1060e / 20.1070e Security Update: kernel (UTSA-2026-000760)

medium Nessus Plugin ID 290594

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-2026-000760 advisory.

sound/core/timer.c in the Linux kernel through 4.6 does not initialize certain r1 data structures, which allows local users to obtain sensitive information from kernel stack memory via crafted use of the ALSA timer interface, related to the (1) snd_timer_user_ccallback and (2) snd_timer_user_tinterrupt functions.

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?57aaae94

https://security-tracker.debian.org/tracker/CVE-2016-4578

https://www.exploit-db.com/exploits/46529/

http://www.nessus.org/u?f915a5dc

http://www.nessus.org/u?c2b72eeb

http://www.nessus.org/u?76d828b2

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

http://www.nessus.org/u?5673d37e

http://www.nessus.org/u?8e0da47e

http://www.nessus.org/u?f038b32a

http://www.nessus.org/u?dd0aec87

http://www.nessus.org/u?781faab0

http://www.nessus.org/u?ff3f6632

http://rhn.redhat.com/errata/RHSA-2016-2574.html

http://rhn.redhat.com/errata/RHSA-2016-2584.html

http://www.debian.org/security/2016/dsa-3607

http://www.openwall.com/lists/oss-security/2016/05/11/5

http://www.securityfocus.com/bid/90535

http://www.ubuntu.com/usn/USN-3016-1

http://www.ubuntu.com/usn/USN-3016-2

http://www.ubuntu.com/usn/USN-3016-3

http://www.ubuntu.com/usn/USN-3016-4

http://www.ubuntu.com/usn/USN-3017-1

http://www.ubuntu.com/usn/USN-3017-2

http://www.ubuntu.com/usn/USN-3017-3

http://www.ubuntu.com/usn/USN-3018-1

http://www.ubuntu.com/usn/USN-3018-2

http://www.ubuntu.com/usn/USN-3019-1

http://www.ubuntu.com/usn/USN-3020-1

http://www.ubuntu.com/usn/USN-3021-1

http://www.ubuntu.com/usn/USN-3021-2

https://bugzilla.redhat.com/show_bug.cgi?id=1335215

http://www.nessus.org/u?19711f38

Plugin Details

Severity: Medium

ID: 290594

File Name: unity_linux_UTSA-2026-000760.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: Low

Base Score: 2.1

Temporal Score: 1.6

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

CVSS Score Source: CVE-2016-4578

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:H/I:N/A:N

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: 5/11/2016

Reference Information

CVE: CVE-2016-4578