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Ubuntu 16.04 LTS / 18.04 LTS / 20.04 LTS / 22.04 LTS / 24.04 LTS / 26.04 LTS : U-Boot vulnerabilities (USN-8930-1)

high Nessus Plugin ID 367207

Synopsis

The remote Ubuntu host is missing one or more security updates.

Description

The remote Ubuntu 16.04 LTS / 18.04 LTS / 20.04 LTS / 22.04 LTS / 24.04 LTS / 26.04 LTS host has packages installed that are affected by multiple vulnerabilities as referenced in the USN-8930-1 advisory.

 Shahriyar Jalayeri and Mehrun P. Hunter discovered that U-Boot incorrectly handled certain NFS READ and NFS READLINK responses. An attacker could possibly use this issue to trigger a buffer overflow, resulting in a denial of service or arbitrary code execution. (CVE-2026-74220, CVE-2026-74221)

 Shahriyar Jalayeri and Mehrun P. Hunter discovered that U-Boot incorrectly handled certain HTTP data storage failures in its lwIP implementation. An attacker could possibly use this issue to trigger a use- after-free, resulting in a denial of service. This issue only affected Ubuntu 24.04 LTS and Ubuntu 26.04 LTS. (CVE-2026-74222)

 Shahriyar Jalayeri and Mehrun P. Hunter discovered that U-Boot did not properly validate certain DHCPv6 option lengths during network boot. An attacker could possibly use this issue to trigger out-of-bounds memory access, resulting in a denial of service. This issue only affected Ubuntu 24.04 LTS and Ubuntu 26.04 LTS. (CVE-2026-74225)

Tenable has extracted the preceding description block directly from the Ubuntu 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 affected packages.

See Also

https://ubuntu.com/security/notices/USN-8930-1

Plugin Details

Severity: High

ID: 367207

File Name: ubuntu_USN-8930-1.nasl

Version: 1.1

Type: Local

Agent: unix

Published: 10/19/2026

Updated: 10/19/2026

Supported Sensors: Nessus Agent, Continuous Assessment, Nessus

Risk Information

VPR

Risk Factor: Low

Score: 3.5

Percentile: 51.46

CVSS v2

Risk Factor: High

Base Score: 8.5

Temporal Score: 6.3

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

CVSS Score Source: CVE-2026-74222

CVSS v3

Risk Factor: High

Base Score: 8.2

Temporal Score: 7.1

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

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

CVSS v4

Risk Factor: High

Base Score: 8.8

Threat Score: 6.7

Threat Vector: CVSS:4.0/E:U

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

Vulnerability Information

CPE: 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, p-cpe:/a:canonical:ubuntu_linux:u-boot-amlogic-binaries, p-cpe:/a:canonical:ubuntu_linux:u-boot-amlogic, p-cpe:/a:canonical:ubuntu_linux:u-boot-asahi, p-cpe:/a:canonical:ubuntu_linux:u-boot-exynos-binaries, p-cpe:/a:canonical:ubuntu_linux:u-boot-exynos, p-cpe:/a:canonical:ubuntu_linux:u-boot-imx, p-cpe:/a:canonical:ubuntu_linux:u-boot-microchip, p-cpe:/a:canonical:ubuntu_linux:u-boot-mvebu, p-cpe:/a:canonical:ubuntu_linux:u-boot-qcom, p-cpe:/a:canonical:ubuntu_linux:u-boot-qemu, p-cpe:/a:canonical:ubuntu_linux:u-boot-rockchip, p-cpe:/a:canonical:ubuntu_linux:u-boot-rpi, p-cpe:/a:canonical:ubuntu_linux:u-boot-sifive, p-cpe:/a:canonical:ubuntu_linux:u-boot-sitara-binaries, p-cpe:/a:canonical:ubuntu_linux:u-boot-starfive, p-cpe:/a:canonical:ubuntu_linux:u-boot-stm32, p-cpe:/a:canonical:ubuntu_linux:u-boot-sunxi, p-cpe:/a:canonical:ubuntu_linux:u-boot-tegra, p-cpe:/a:canonical:ubuntu_linux:u-boot-tools, p-cpe:/a:canonical:ubuntu_linux:u-boot

Required KB Items: Host/cpu, Host/Debian/dpkg-l, Host/Ubuntu, Host/Ubuntu/release

Exploit Ease: No known exploits are available

Patch Publication Date: 10/14/2026

Vulnerability Publication Date: 9/29/2026

Reference Information

CVE: CVE-2026-74220, CVE-2026-74221, CVE-2026-74222, CVE-2026-74225

USN: 8930-1