Detections
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Unity Linux 20.1050e / 20.1060e / 20.1070e Security Update: kernel (UTSA-2026-000765)
medium Nessus Plugin ID 291120
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-2026-000765 advisory.Multiple race conditions in the madvise_remove function in mm/madvise.c in the Linux kernel before 3.4.5 allow local users to cause a denial of service (use-after-free and system crash) via vectors involving a (1) munmap or (2) close system call.
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?e695f477
http://www.nessus.org/u?fd37d597
http://secunia.com/advisories/50633
http://secunia.com/advisories/50732
http://secunia.com/advisories/55055
http://ubuntu.com/usn/usn-1529-1
http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.4.5
http://www.openwall.com/lists/oss-security/2012/08/20/13
http://www.securityfocus.com/bid/55151
http://www.ubuntu.com/usn/USN-1567-1
http://www.ubuntu.com/usn/USN-1572-1
http://www.ubuntu.com/usn/USN-1577-1
https://bugzilla.redhat.com/show_bug.cgi?id=849734
Plugin Details
Severity: Medium
ID: 291120
File Name: unity_linux_UTSA-2026-000765.nasl
Version: 1.1
Type: local
Published: 1/16/2026
Updated: 1/16/2026
Supported Sensors: Nessus
Risk Information
VPR
Risk Factor: Medium
Score: 6.7
CVSS v2
Risk Factor: Medium
Base Score: 6.2
Temporal Score: 4.9
Vector: CVSS2#AV:L/AC:H/Au:N/C:C/I:C/A:C
CVSS Score Source: CVE-2012-3511
CVSS v3
Risk Factor: Medium
Base Score: 5.9
Temporal Score: 5.3
Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/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: 8/20/2012
Reference Information
CVE: CVE-2012-3511