CentOS 9 : polkit-0.117-16.el9

medium Nessus Plugin ID 315234

Synopsis

The remote CentOS host is missing a security update for polkit.

Description

The remote CentOS Linux 9 host has packages installed that are affected by a vulnerability as referenced in the polkit-0.117-16.el9 build changelog.

- A flaw was found in polkit. A local user can exploit this by providing a specially crafted, excessively long input to the `polkit-agent-helper-1` setuid binary via standard input (stdin). This unbounded input can lead to an out-of-memory (OOM) condition, resulting in a Denial of Service (DoS) for the system.
(CVE-2026-4897)

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 CentOS 9 Stream polkit package.

Plugin Details

Severity: Medium

ID: 315234

File Name: centos9_polkit-0_117-16_110833.nasl

Version: 1.1

Type: Local

Agent: unix

Family: CentOS Local Security Checks

Published: 5/19/2026

Updated: 5/19/2026

Supported Sensors: Agentless Assessment, Continuous Assessment, Frictionless Assessment Agent, Frictionless Assessment AWS, Frictionless Assessment Azure, Nessus Agent, Nessus

Risk Information

VPR

Risk Factor: Low

Score: 3.6

CVSS v2

Risk Factor: Medium

Base Score: 4.6

Temporal Score: 3.4

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

CVSS Score Source: CVE-2026-4897

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

CPE: p-cpe:/a:centos:centos:polkit-libs, cpe:/a:centos:centos:9, p-cpe:/a:centos:centos:polkit-devel, p-cpe:/a:centos:centos:polkit, p-cpe:/a:centos:centos:polkit-docs

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

Exploit Ease: No known exploits are available

Patch Publication Date: 5/13/2026

Vulnerability Publication Date: 3/26/2026

Reference Information

CVE: CVE-2026-4897

Detections

Analytics