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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-8884-1)

critical Nessus Plugin ID 363741

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-8884-1 advisory.

 Timo Preil discovered that U-Boot incorrectly handled certain malformed ZFS file system metadata. An attacker could possibly use this issue to trigger an integer overflow and out-of-bounds memory access, resulting in arbitrary code execution or a denial of service. (CVE-2025-70290)

 Timo Preil discovered that U-Boot incorrectly calculated buffer sizes when processing certain ext4 file systems. An attacker could possibly use this issue to trigger an integer overflow and out-of-bounds memory access, resulting in arbitrary code execution or a denial of service. This issue only affected Ubuntu 18.04 LTS, Ubuntu 20.04 LTS, Ubuntu 22.04 LTS, Ubuntu 24.04 LTS, and Ubuntu 26.04 LTS. (CVE-2025-70293)

 Mateusz Furdyna discovered that U-Boot incorrectly handled certain fragmented IP traffic when IP defragmentation was enabled. An attacker could possibly use this issue to corrupt memory by sending crafted IP fragments, resulting in arbitrary code execution. (CVE-2026-15390)

 Shahriyar Jalayeri and Mehrun P. Hunter discovered that U-Boot incorrectly handled certain fragmented IP traffic during network boot when IP defragmentation was enabled. An attacker could possibly use this issue to trigger an out-of-bounds write, resulting in a denial of service. (CVE-2026-71971)

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-8884-1

Plugin Details

Severity: Critical

ID: 363741

File Name: ubuntu_USN-8884-1.nasl

Version: 1.2

Type: Local

Agent: unix

Published: 10/7/2026

Updated: 10/7/2026

Supported Sensors: Nessus Agent, Continuous Assessment, Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 4.9

Percentile: 58.35

CVSS v2

Risk Factor: Critical

Base Score: 10

Temporal Score: 7.4

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

CVSS Score Source: CVE-2025-70293

CVSS v3

Risk Factor: Critical

Base Score: 9.8

Temporal Score: 8.5

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

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

CVSS v4

Risk Factor: Critical

Base Score: 9

Threat Score: 6.1

Threat Vector: CVSS:4.0/E:U

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

CVSS Score Source: CVE-2026-15390

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: 10/6/2026

Vulnerability Publication Date: 8/26/2026

Reference Information

CVE: CVE-2025-70290, CVE-2025-70293, CVE-2026-15390, CVE-2026-71971

USN: 8884-1