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Das U-Boot before 2026.04 allows FIT (Flat Image Tree) signature verification bypass because hashed-nodes is omitted from a hash. (CVE-2026-46728)

0
Medium
VulnerabilityCVE-2026-46728gcveosvubuntu-cve-2026-46728ubuntu-16-04-ltsubuntu-18-04-ltsubuntu-20-04-ltsubuntu-22-04-ltsubuntu-24-04-ltsubuntu-25-10ubuntu-26-04-ltscve-2026-46728
Published: 05/16/2026 (05/16/2026, 22:16:00 UTC)
Source: GCVE Database
Product: u-boot

Description

Das U-Boot before 2026.04 allows FIT (Flat Image Tree) signature verification bypass because hashed-nodes is omitted from a hash.

CVSS v3.1

Score 8.8high

Attack Vector
Local
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Changed
Confidentiality
High
Integrity
High
Availability
High
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H

Affected software

Ubuntu:16.04:LTSmore threats →ghsa
u-boot
pkg:deb/ubuntu/[email protected]+dfsg1-2ubuntu5?arch=source&distro=xenial
Affected versions
=2015.04+dfsg1-2ubuntu1=2015.10+dfsg1-2=2015.10+dfsg1-3=2015.10+dfsg1-4=2016.01+dfsg1-1=2016.01+dfsg1-1ubuntu1=2016.01+dfsg1-2ubuntu1=2016.01+dfsg1-2ubuntu2=2016.01+dfsg1-2ubuntu3=2016.01+dfsg1-2ubuntu5
Ubuntu:18.04:LTSmore threats →ghsa
u-boot
pkg:deb/ubuntu/[email protected]+dfsg-1ubuntu0~18.04.3?arch=source&distro=bionic
Affected versions
=2016.03+dfsg1-6ubuntu2=2018.07~rc3+dfsg1-0ubuntu1~18.04.1=2018.07~rc3+dfsg1-0ubuntu2~18.04.1=2018.07~rc3+dfsg1-0ubuntu3~18.04.1=2019.07+dfsg-1ubuntu4~18.04.1=2020.10+dfsg-1ubuntu0~18.04.2=2020.10+dfsg-1ubuntu0~18.04.3
Ubuntu:20.04:LTSmore threats →ghsa
u-boot
pkg:deb/ubuntu/[email protected]+dfsg-3ubuntu0~20.04.6?arch=source&distro=focal
Affected versions
=2019.07+dfsg-1ubuntu3=2019.07+dfsg-1ubuntu5=2019.07+dfsg-1ubuntu6=2020.10+dfsg-1ubuntu0~20.04.2=2021.01+dfsg-3ubuntu0~20.04.1=2021.01+dfsg-3ubuntu0~20.04.3=2021.01+dfsg-3ubuntu0~20.04.4=2021.01+dfsg-3ubuntu0~20.04.5=2021.01+dfsg-3ubuntu0~20.04.6
Ubuntu:22.04:LTSmore threats →ghsa
u-boot
pkg:deb/ubuntu/[email protected]+dfsg-2ubuntu2.7?arch=source&distro=jammy
Affected versions
=2021.07+dfsg-0ubuntu8=2021.07+dfsg-0ubuntu9=2021.07+dfsg-0ubuntu10=2022.01+dfsg-2ubuntu1=2022.01+dfsg-2ubuntu2=2022.01+dfsg-2ubuntu2.1=2022.01+dfsg-2ubuntu2.3=2022.01+dfsg-2ubuntu2.4=2022.01+dfsg-2ubuntu2.5=2022.01+dfsg-2ubuntu2.6=2022.01+dfsg-2ubuntu2.7
Ubuntu:22.04:LTSmore threats →ghsa
u-boot-nezha
pkg:deb/ubuntu/[email protected]+git20220405.7446a472-0ubuntu0.4?arch=source&distro=jammy
Affected versions
=2021.09+git20211008.62392d3-0ubuntu1=2022.04+git20220405.7446a472-0ubuntu0.1=2022.04+git20220405.7446a472-0ubuntu0.2=2022.04+git20220405.7446a472-0ubuntu0.3=2022.04+git20220405.7446a472-0ubuntu0.4
Ubuntu:24.04:LTSmore threats →ghsa
u-boot
pkg:deb/ubuntu/[email protected]?arch=source&distro=noble
Affected versions
=2023.07+dfsg-1ubuntu2=2024.01+dfsg-1ubuntu1=2024.01+dfsg-1ubuntu2=2024.01+dfsg-1ubuntu3=2024.01+dfsg-1ubuntu4=2024.01+dfsg-1ubuntu5=2024.01+dfsg-1ubuntu5.1=2024.01+dfsg-1ubuntu5.2=2025.01-0ubuntu0.24.04.1=2025.01-0ubuntu0.24.04.2=2025.10-0ubuntu0.24.04.1=2025.10-0ubuntu0.24.04.2
Ubuntu:24.04:LTSmore threats →ghsa
u-boot-nezha
pkg:deb/ubuntu/[email protected]~rc1-190-g2e89b706f5-0ubuntu2?arch=source&distro=noble
Affected versions
=2022.10-1089-g528ae9bc6c-0ubuntu2=2024.01~rc1-190-g2e89b706f5-0ubuntu1=2024.01~rc1-190-g2e89b706f5-0ubuntu2
Ubuntu:25.10more threats →ghsa
u-boot
pkg:deb/ubuntu/[email protected]?arch=source&distro=questing
Affected versions
=2025.01-1~0ubuntu2=2025.01-3ubuntu1=2025.01-3ubuntu2=2025.01-3ubuntu4=2025.10-0ubuntu0.25.10.1
Ubuntu:26.04:LTSmore threats →ghsa
u-boot
pkg:deb/ubuntu/[email protected]?arch=source&distro=resolute
Affected versions
=2025.01-3ubuntu4=2025.10-0ubuntu1=2025.10-0ubuntu2

Run on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.

Technical Details

Gcve Source
db.gcve.eu
Osv Id
UBUNTU-CVE-2026-46728
Osv Schema Version
1.7.0
Ecosystems
["Ubuntu:16.04:LTS","Ubuntu:18.04:LTS","Ubuntu:20.04:LTS","Ubuntu:22.04:LTS","Ubuntu:24.04:LTS","Ubuntu:25.10","Ubuntu:26.04:LTS"]
Cvss Version
3.1
State
PUBLISHED

Threat ID: 6a58b49a68715ace43da82f0

Added to database: 07/16/2026, 10:38:18 UTC

Last enriched: 07/16/2026, 12:29:12 UTC

Last updated: 09/14/2026, 10:01:31 UTC

Views: 19

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