Linux Distros Unpatched Vulnerability : CVE-2026-78410

high Nessus Plugin ID 342392

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Synopsis

The Linux/Unix host has one or more packages installed with a vulnerability that the vendor indicates will not be patched.

Description

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available.

- A flaw was found in util-linux. Restricted bind mounts take the source path from fstab but do not pin that source before the privileged mount. A local unprivileged user who can replace the authorized source or a writable ancestor can redirect SUID mount(8) to bind another host directory. If the fstab entry also sets X-mount.owner, X-mount.group, or X-mount.mode, root then changes ownership or mode on that redirected inode. (CVE-2026-78410)

Note that Nessus relies on the presence of the package as reported by the vendor.

Solution

There is no known solution at this time.

Plugin Details

Severity: High

ID: 342392

File Name: unpatched_CVE_2026_78410.nasl

Version: 1.4

Type: Local

Agent: unix

Family: Misc.

Published: 9/2/2026

Updated: 9/16/2026

Supported Sensors: Frictionless Assessment AWS, Frictionless Assessment Azure, Frictionless Assessment Agent, Nessus Agent, Agentless Assessment, Tenable Cloud Security, Tenable Self-Hosted Container Security, Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 4.9

Percentile: 58.27

CVSS v2

Risk Factor: Medium

Base Score: 6.9

Temporal Score: 5.9

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

CVSS Score Source: CVE-2026-78410

CVSS v3

Risk Factor: High

Base Score: 7.8

Temporal Score: 7.1

Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Temporal Vector: CVSS:3.0/E:U/RL:U/RC:C

Vulnerability Information

CPE: cpe:/o:canonical:ubuntu_linux:14.04:-:lts, cpe:/o:canonical:ubuntu_linux:16.04:-:lts, cpe:/o:canonical:ubuntu_linux:18.04:-:lts, cpe:/o:canonical:ubuntu_linux:20.04:-:lts, cpe:/o:canonical:ubuntu_linux:22.04:-:lts, cpe:/o:canonical:ubuntu_linux:24.04:-:lts, cpe:/o:canonical:ubuntu_linux:26.04:-:lts, cpe:/o:debian:debian_linux:12.0, cpe:/o:debian:debian_linux:13.0, cpe:/o:redhat:enterprise_linux:10, p-cpe:/a:canonical:ubuntu_linux:util-linux, p-cpe:/a:debian:debian_linux:util-linux, 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-core, p-cpe:/a:redhat:enterprise_linux:util-linux, p-cpe:/a:redhat:enterprise_linux:uuidd

Required KB Items: Host/local_checks_enabled, Host/cpu, global_settings/vendor_unpatched, Host/OS/identifier

Exploit Ease: No known exploits are available

Reference Information

CVE: CVE-2026-78410

Detections

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