USN-8056-1: U-Boot vulnerabilities

Publication date

23 February 2026

Overview

Several security issues were fixed in U-Boot.


Packages

  • u-boot - A boot loader for embedded systems

Details

Simon Diepold discovered that U-Boot incorrectly handled certain DHCP
responses. An attacker on the local network could possibly use this issue
to obtain sensitive memory contents. (CVE-2024-42040)

It was discovered that U-Boot incorrectly handled symlink size calculations
in squashfs file systems. An attacker could use this issue with a specially
crafted squashfs file system to cause U-Boot to crash, resulting in a denial
of service, or execute arbitrary code. (CVE-2024-57254)

It was discovered that U-Boot incorrectly handled inode size calculations
in squashfs file systems. An attacker could use this issue with a specially
crafted squashfs file system to cause U-Boot to crash, resulting in a denial
of service, or execute arbitrary code. (CVE-2024-57255)

It was discovered that U-Boot incorrectly handled inode...

Simon Diepold discovered that U-Boot incorrectly handled certain DHCP
responses. An attacker on the local network could possibly use this issue
to obtain sensitive memory contents. (CVE-2024-42040)

It was discovered that U-Boot incorrectly handled symlink size calculations
in squashfs file systems. An attacker could use this issue with a specially
crafted squashfs file system to cause U-Boot to crash, resulting in a denial
of service, or execute arbitrary code. (CVE-2024-57254)

It was discovered that U-Boot incorrectly handled inode size calculations
in squashfs file systems. An attacker could use this issue with a specially
crafted squashfs file system to cause U-Boot to crash, resulting in a denial
of service, or execute arbitrary code. (CVE-2024-57255)

It was discovered that U-Boot incorrectly handled inode size calculations
in EXT4 file systems. An attacker could use this issue with a specially
crafted EXT4 file system to cause U-Boot to crash, resulting in a denial of
service, or execute arbitrary code. (CVE-2024-57256)

It was discovered that U-Boot incorrectly handled deep symlink nesting in
squashfs file systems. An attacker could possibly use this issue with a
specially crafted squashfs file system to cause U-Boot to crash, resulting
in a denial of service. (CVE-2024-57257)

It was discovered that U-Boot incorrectly handled memory allocation in
squashfs file systems. An attacker could use this issue with a specially
crafted squashfs file system to cause U-Boot to crash, resulting in a denial
of service, or execute arbitrary code. (CVE-2024-57258)


Update instructions

In general, a standard system update will make all the necessary changes.

Learn more about how to get the fixes.

The problem can be corrected by updating your system to the following package versions:

Ubuntu Release Package Version
24.04 LTS noble u-boot-amlogic –  2025.10-0ubuntu0.24.04.2
u-boot-asahi –  2025.10-0ubuntu0.24.04.2
u-boot-exynos –  2025.10-0ubuntu0.24.04.2
u-boot-imx –  2025.10-0ubuntu0.24.04.2
u-boot-microchip –  2025.10-0ubuntu0.24.04.2
u-boot-mvebu –  2025.10-0ubuntu0.24.04.2
u-boot-omap –  2025.10-0ubuntu0.24.04.2
u-boot-qcom –  2025.10-0ubuntu0.24.04.2
u-boot-qemu –  2025.10-0ubuntu0.24.04.2
u-boot-rockchip –  2025.10-0ubuntu0.24.04.2
u-boot-rpi –  2025.10-0ubuntu0.24.04.2
u-boot-sifive –  2025.10-0ubuntu0.24.04.2
u-boot-sitara-binaries –  2025.10-0ubuntu0.24.04.2
u-boot-starfive –  2025.10-0ubuntu0.24.04.2
u-boot-stm32 –  2025.10-0ubuntu0.24.04.2
u-boot-sunxi –  2025.10-0ubuntu0.24.04.2
u-boot-tegra –  2025.10-0ubuntu0.24.04.2
u-boot-tools –  2025.10-0ubuntu0.24.04.2
22.04 LTS jammy u-boot –  2022.01+dfsg-2ubuntu2.7
u-boot-amlogic –  2022.01+dfsg-2ubuntu2.7
u-boot-exynos –  2022.01+dfsg-2ubuntu2.7
u-boot-imx –  2022.01+dfsg-2ubuntu2.7
u-boot-microchip –  2022.01+dfsg-2ubuntu2.7
u-boot-mvebu –  2022.01+dfsg-2ubuntu2.7
u-boot-omap –  2022.01+dfsg-2ubuntu2.7
u-boot-qcom –  2022.01+dfsg-2ubuntu2.7
u-boot-qemu –  2022.01+dfsg-2ubuntu2.7
u-boot-rockchip –  2022.01+dfsg-2ubuntu2.7
u-boot-rpi –  2022.01+dfsg-2ubuntu2.7
u-boot-sifive –  2022.01+dfsg-2ubuntu2.7
u-boot-sunxi –  2022.01+dfsg-2ubuntu2.7
u-boot-tegra –  2022.01+dfsg-2ubuntu2.7
u-boot-tools –  2022.01+dfsg-2ubuntu2.7

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