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RHEL 8 : util-linux (RHSA-2026:96212)

medium Nessus Plugin ID 377696

Synopsis

The remote Red Hat host is missing one or more security updates for util-linux.

Description

The remote Redhat Enterprise Linux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2026:96212 advisory.

 The util-linux packages contain a large variety of low-level system utilities that are necessary for a Linux system to function. Among others, these include the fdisk configuration tool and the login program.

 Security Fix(es):

 * util-linux: util-linux: heap use-after-free in libblkid nested partition probing (CVE-2026-13595)

 * util-linux: TOCTOU in the mount program via ancestor directory swap on target path (CVE-2026-53613)

 * util-linux: util-linux: Partition metadata compromise via integer overflow in DOS partition parser (CVE-2026-53615)

 For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

Tenable has extracted the preceding description block directly from the Red Hat Enterprise Linux security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

Solution

Update the RHEL util-linux package based on the guidance in RHSA-2026:96212.

See Also

https://access.redhat.com/errata/RHSA-2026:96212

https://access.redhat.com/security/updates/classification/#important

https://bugzilla.redhat.com/show_bug.cgi?id=2494101

https://bugzilla.redhat.com/show_bug.cgi?id=2519646

https://bugzilla.redhat.com/show_bug.cgi?id=2552551

http://www.nessus.org/u?02336737

Plugin Details

Severity: Medium

ID: 377696

File Name: redhat-RHSA-2026-96212.nasl

Version: 1.1

Type: Local

Agent: unix

Published: 11/9/2026

Updated: 11/9/2026

Supported Sensors: Nessus Agent, Continuous Assessment, Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 6.9

Percentile: 96.52

Vendor

Vendor Severity: Important

CVSS v2

Risk Factor: Medium

Base Score: 4.5

Temporal Score: 3.5

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: 4.8

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:P/RL:O/RC:C

Vulnerability Information

CPE: cpe:/o:redhat:enterprise_linux:8, cpe:/o:redhat:rhel_eus:8.10, p-cpe:/a:redhat:enterprise_linux:libblkid-devel, p-cpe:/a:redhat:enterprise_linux:libblkid, p-cpe:/a:redhat:enterprise_linux:libfdisk-devel, p-cpe:/a:redhat:enterprise_linux:libfdisk, p-cpe:/a:redhat:enterprise_linux:libmount-devel, p-cpe:/a:redhat:enterprise_linux:libmount, p-cpe:/a:redhat:enterprise_linux:libsmartcols-devel, p-cpe:/a:redhat:enterprise_linux:libsmartcols, p-cpe:/a:redhat:enterprise_linux:libuuid-devel, p-cpe:/a:redhat:enterprise_linux:libuuid, p-cpe:/a:redhat:enterprise_linux:python3-libmount, p-cpe:/a:redhat:enterprise_linux:util-linux-user, p-cpe:/a:redhat:enterprise_linux:util-linux, p-cpe:/a:redhat:enterprise_linux:uuidd

Required KB Items: Host/local_checks_enabled, Host/RedHat/release, Host/RedHat/rpm-list, Host/cpu

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 11/9/2026

Vulnerability Publication Date: 6/16/2026

Reference Information

CVE: CVE-2026-13595, CVE-2026-53613, CVE-2026-53615

CWE: 190, 367, 416

RHSA: 2026:96212