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Amazon Linux 2023 : libusbx, libusbx-devel, libusbx-tests-examples (ALAS2023-2026-1848)

medium Nessus Plugin ID 322060

Synopsis

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

Description

It is, therefore, affected by a vulnerability as referenced in the ALAS2023-2026-1848 advisory.

 libusb before version 1.0.30 contains a NULL pointer dereference vulnerability that allows attackers to crash applications by supplying a malformed USB configuration descriptor where an interface claims bNumEndpoints greater than zero but is followed by a class-specific descriptor whose bLength exceeds the remaining buffer size, causing parse_interface() to return early without allocating the endpoint array.
 Attackers can exploit this flaw through libusb_get_active_config_descriptor or libusb_get_config_descriptor by providing crafted descriptors via virtualized USB passthrough, file-based descriptor parsing, or network sources, causing any application iterating over endpoints to dereference a NULL endpoint pointer and crash. (CVE-2026-23679)

Tenable has extracted the preceding description block directly from the tested product security advisory.

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

Solution

Run 'dnf update libusbx --releasever 2023.12.20260622' or or 'dnf update --advisory ALAS2023-2026-1848 --releasever 2023.12.20260622' to update your system.

See Also

https://alas.aws.amazon.com//AL2023/ALAS2023-2026-1848.html

https://alas.aws.amazon.com/faqs.html

https://explore.alas.aws.amazon.com/CVE-2026-23679.html

Plugin Details

Severity: Medium

ID: 322060

File Name: al2023_ALAS2023-2026-1848.nasl

Version: 1.1

Type: Local

Agent: unix

Published: 6/22/2026

Updated: 6/22/2026

Supported Sensors: Nessus Agent, Continuous Assessment, Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 4.4

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-2026-23679

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

CVSS v4

Risk Factor: Medium

Base Score: 6.9

Threat Score: 4.6

Threat Vector: CVSS:4.0/E:U

Vector: CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N

Vulnerability Information

CPE: p-cpe:/a:amazon:linux:libusbx-debugsource, p-cpe:/a:amazon:linux:libusbx-tests-examples, p-cpe:/a:amazon:linux:libusbx-debuginfo, p-cpe:/a:amazon:linux:libusbx-tests-examples-debuginfo, p-cpe:/a:amazon:linux:libusbx, p-cpe:/a:amazon:linux:libusbx-devel, p-cpe:/a:amazon:linux:libusbx-devel-doc, cpe:/o:amazon:linux:2023

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

Exploit Ease: No known exploits are available

Patch Publication Date: 6/22/2026

Vulnerability Publication Date: 5/27/2026

Reference Information

CVE: CVE-2026-23679