RHEL 9 : libXi (RHSA-2026:98504)

high Nessus Plugin ID 378821

Synopsis

The remote Red Hat host is missing one or more security updates for libXi.

Description

The remote Redhat Enterprise Linux 9 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2026:98504 advisory.

X.Org X11 libXi runtime library

Security Fix(es):

* libXi: libXi: Denial of Service via out-of-bounds read in XI2 class parser (CVE-2026-93543)

* libXi: libXi: Arbitrary code execution via oversized DEVICE_ENABLE reply (CVE-2026-109090)

* libXi: libXi: Arbitrary code execution via DEVICE_RESOLUTION heap-based buffer overflow (CVE-2026-109089)

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 libXi package based on the guidance in RHSA-2026:98504.

Plugin Details

Severity: High

ID: 378821

File Name: redhat-RHSA-2026-98504.nasl

Version: 1.1

Type: Local

Agent: unix

Family: Red Hat Local Security Checks

Published: 11/11/2026

Updated: 11/11/2026

Supported Sensors: Nessus Agent, Continuous Assessment, Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 4.9

Percentile: 58.61

Vendor

Vendor Severity: Important

CVSS v2

Risk Factor: High

Base Score: 7.6

Temporal Score: 5.6

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

CVSS Score Source: CVE-2026-109090

CVSS v3

Risk Factor: High

Base Score: 7.5

Temporal Score: 6.5

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

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

Vulnerability Information

CPE: cpe:/o:redhat:enterprise_linux:9, p-cpe:/a:redhat:enterprise_linux:libxi-devel, p-cpe:/a:redhat:enterprise_linux:libxi

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

Exploit Ease: No known exploits are available

Patch Publication Date: 11/11/2026

Vulnerability Publication Date: 9/24/2026

Reference Information

CVE: CVE-2026-109089, CVE-2026-109090, CVE-2026-93543

CWE: 125, 787

RHSA: 2026:98504

Detections

Analytics