Amazon Linux 2023 : libXi, libXi-devel (ALAS2023-2026-3394)

high Nessus Plugin ID 377899

Synopsis

The remote Amazon Linux 2023 host is missing a security update.

Description

It is, therefore, affected by multiple vulnerabilities as referenced in the ALAS2023-2026-3394 advisory.

libXi XGetDeviceControl Control Type Mismatch Heap Buffer Overflow (CVE-2026-109089)

libXi XGetDeviceControl DEVICE_ENABLE Heap Buffer Overflow

NOTE: https://lists.x.org/archives/xorg-announce/2026-October/003752.htmlNOTE:
https://gitlab.freedesktop.org/xorg/lib/libxi/-/merge_requests/26NOTE: Fixed by:
https://gitlab.freedesktop.org/xorg/lib/libxi/-/commit/4eb9f70b67034ace1abdf785fd8dcba7b6dc739d (CVE-2026-109090)

A flaw was found in libXi. An out-of-bounds read vulnerability in the XQueryDeviceState() function allows a malicious X server to trigger an application crash. By returning a specially crafted response to a device state query, the server causes the client application to read memory beyond allocated buffer boundaries, resulting in a Denial of Service (DoS). (CVE-2026-93541)

An out-of-bounds read in libXi's XI2 class parsing via size_classes() and copy_classes() in libXi before 1.8.4 could be used by malicous servers to crash the X client. (CVE-2026-93542)

An out-of-bounds read in libXi's XI2 class parser in libXi before 1.8.4 could be used by malicious X servers to crash an attached X client. (CVE-2026-93543)

An out-of-bounds read in libXi's XI2 XIQueryDevice reply parsing in libXi before 1.8.4 can be used by a malicious X server to crash an attached X client. (CVE-2026-93544)

An out-of-bounds read in libXi's XListInputDevices() in libXi before 1.8.4 could be used by malicious X servers to crash an attached X client. (CVE-2026-93545)

An out-of-bounds read in libXi's XListInputDevices() class parsing in libXi before 1.8.4 could be used by malicious X servers to crash an attached X client. (CVE-2026-94281)

Out-of-bounds read in libXi's XI2 enter/leave/focus cookie conversion. (CVE-2026-94282)

Tenable has extracted the preceding description block directly from the tested product 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

Run 'dnf update libXi --releasever 2023.12.20261109' or or 'dnf update --advisory ALAS2023-2026-3394 --releasever 2023.12.20261109' to update your system.

Plugin Details

Severity: High

ID: 377899

File Name: al2023_ALAS2023-2026-3394.nasl

Version: 1.1

Type: Local

Agent: unix

Family: Amazon Linux Local Security Checks

Published: 11/9/2026

Updated: 11/9/2026

Supported Sensors: Nessus Agent, Continuous Assessment, Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 4.9

Percentile: 58.61

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:amazon:linux:2023, p-cpe:/a:amazon:linux:libxi-debuginfo, p-cpe:/a:amazon:linux:libxi-debugsource, p-cpe:/a:amazon:linux:libxi-devel, p-cpe:/a:amazon:linux:libxi

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

Exploit Ease: No known exploits are available

Patch Publication Date: 11/9/2026

Vulnerability Publication Date: 9/24/2026

Reference Information

CVE: CVE-2026-109089, CVE-2026-109090, CVE-2026-93541, CVE-2026-93542, CVE-2026-93543, CVE-2026-93544, CVE-2026-93545, CVE-2026-94281, CVE-2026-94282

Detections

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