Detections
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Unity Linux 20.1050e / 20.1060e / 20.1070e Security Update: kernel (UTSA-2026-000637)
medium Nessus Plugin ID 290746
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-2026-000637 advisory.The snd_ctl_elem_add function in sound/core/control.c in the ALSA control implementation in the Linux kernel before 3.15.2 does not properly maintain the user_ctl_count value, which allows local users to cause a denial of service (integer overflow and limit bypass) by leveraging /dev/snd/controlCX access for a large number of SNDRV_CTL_IOCTL_ELEM_REPLACE ioctl 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?70a13e6a
http://www.nessus.org/u?7a5ed3f8
http://www.nessus.org/u?3994282b
http://rhn.redhat.com/errata/RHSA-2014-1083.html
http://secunia.com/advisories/59434
http://secunia.com/advisories/59777
http://secunia.com/advisories/60545
http://secunia.com/advisories/60564
http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.15.2
http://www.openwall.com/lists/oss-security/2014/06/26/6
http://www.securityfocus.com/bid/68162
http://www.securitytracker.com/id/1036763
http://www.ubuntu.com/usn/USN-2334-1
http://www.ubuntu.com/usn/USN-2335-1
https://bugzilla.redhat.com/show_bug.cgi?id=1113445
Plugin Details
Severity: Medium
ID: 290746
File Name: unity_linux_UTSA-2026-000637.nasl
Version: 1.1
Type: local
Published: 1/16/2026
Updated: 1/16/2026
Supported Sensors: Nessus
Risk Information
VPR
Risk Factor: Medium
Score: 5.2
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-2014-4655
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/UOS-Server/release, Host/UOS-Server/rpm-list, Host/cpu
Exploit Ease: No known exploits are available
Patch Publication Date: 1/14/2026
Vulnerability Publication Date: 6/18/2014
Reference Information
CVE: CVE-2014-4655