Detections
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Unity Linux 20.1070a Security Update: util-linux (UTSA-2026-151334)
medium Nessus Plugin ID 378421
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-2026-151334 advisory.A flaw was found in the libblkid library of util-linux. During nested partition probing, the BSD, Minix, Solaris x86, and UnixWare partition probers cache a raw pointer to a parent partition entry in a dynamically allocated array. When subsequent partition additions cause the array to be reallocated, this pointer becomes stale, leading to a heap use-after-free read. An attacker who can present a crafted block device image (for example, via USB insertion or a loop-mounted disk image) can trigger this flaw without user interaction, as libblkid is invoked automatically by udev/udisks as root on block-device hot-plug events. This could lead to limited information disclosure or denial of service.
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 util-linux package.See Also
https://access.redhat.com/security/cve/CVE-2026-13595
Plugin Details
Severity: Medium
ID: 378421
File Name: unity_linux_UTSA-2026-151334.nasl
Version: 1.1
Type: Local
Published: 11/10/2026
Updated: 11/10/2026
Supported Sensors: Nessus
Risk Information
VPR
Risk Factor: Low
Score: 3.5
Percentile: 51.74
CVSS v2
Risk Factor: Medium
Base Score: 4.5
Temporal Score: 3.3
Vector: CVSS2#AV:L/AC:H/Au:S/C:P/I:N/A:C
CVSS Score Source: CVE-2026-13595
CVSS v3
Risk Factor: Medium
Base Score: 5.3
Temporal Score: 4.6
Vector: CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:L/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: 11/10/2026
Vulnerability Publication Date: 6/29/2026
Reference Information
CVE: CVE-2026-13595