OESA-2026-1834 (CVE-2026-33243)
Vulnerability from osv_openeuler – Published: 2026-04-11 11:10 – Updated: 2026-08-06 11:10 – Source website
VLAI
Summary
uboot-tools security update
Details
This package includes the mkimage program, which allows generation of U-Boot images in various formats, and the fw_printenv and fw_setenv programs to read and modify U-Boot's environment.
Security Fix(es):
barebox is a bootloader. In barebox from version 2016.03.0 to before version 2026.03.1 (and the corresponding backport to 2025.09.3), an attacker could exploit a FIT signature verification vulnerability to trick the bootloader into booting different images than those that were verified as part of a signed configuration. mkimage(1) sets the hashed-nodes property of the FIT signature node to list which nodes of the FIT were hashed as part of the signing process as these will need to be verified later on by the bootloader. However, hashed-nodes itself is not part of the hash and could therefore be modified to allow booting different images than those that have been verified. This issue has been patched in barebox versions 2026.03.1 and backported to 2025.09.3.(CVE-2026-33243)
Severity
8.2 (High)
References
| URL | Type | |
|---|---|---|
{
"affected": [
{
"ecosystem_specific": {
"aarch64": [
"uboot-images-elf-2024.01-3.oe2403sp3.aarch64.rpm",
"uboot-tools-2024.01-3.oe2403sp3.aarch64.rpm",
"uboot-tools-debuginfo-2024.01-3.oe2403sp3.aarch64.rpm",
"uboot-tools-debugsource-2024.01-3.oe2403sp3.aarch64.rpm"
],
"noarch": [
"uboot-images-armv8-2024.01-3.oe2403sp3.noarch.rpm",
"uboot-tools-help-2024.01-3.oe2403sp3.noarch.rpm"
],
"src": [
"uboot-tools-2024.01-3.oe2403sp3.src.rpm"
],
"x86_64": [
"uboot-tools-2024.01-3.oe2403sp3.x86_64.rpm",
"uboot-tools-debuginfo-2024.01-3.oe2403sp3.x86_64.rpm",
"uboot-tools-debugsource-2024.01-3.oe2403sp3.x86_64.rpm"
]
},
"package": {
"ecosystem": "openEuler:24.03-LTS-SP3",
"name": "uboot-tools",
"purl": "pkg:rpm/openEuler/uboot-tools\u0026distro=openEuler-24.03-LTS-SP3"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "2024.01-3.oe2403sp3"
}
],
"type": "ECOSYSTEM"
}
]
},
{
"ecosystem_specific": {
"aarch64": [
"uboot-images-elf-2020.07-10.oe2003sp4.aarch64.rpm",
"uboot-tools-2020.07-10.oe2003sp4.aarch64.rpm",
"uboot-tools-debuginfo-2020.07-10.oe2003sp4.aarch64.rpm",
"uboot-tools-debugsource-2020.07-10.oe2003sp4.aarch64.rpm"
],
"noarch": [
"uboot-images-armv8-2020.07-10.oe2003sp4.noarch.rpm",
"uboot-tools-help-2020.07-10.oe2003sp4.noarch.rpm"
],
"src": [
"uboot-tools-2020.07-10.oe2003sp4.src.rpm"
],
"x86_64": [
"uboot-tools-2020.07-10.oe2003sp4.x86_64.rpm",
"uboot-tools-debuginfo-2020.07-10.oe2003sp4.x86_64.rpm",
"uboot-tools-debugsource-2020.07-10.oe2003sp4.x86_64.rpm"
]
},
"package": {
"ecosystem": "openEuler:20.03-LTS-SP4",
"name": "uboot-tools",
"purl": "pkg:rpm/openEuler/uboot-tools\u0026distro=openEuler-20.03-LTS-SP4"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "2020.07-10.oe2003sp4"
}
],
"type": "ECOSYSTEM"
}
]
},
{
"ecosystem_specific": {
"aarch64": [
"uboot-images-elf-2021.10-11.oe2203sp4.aarch64.rpm",
"uboot-tools-2021.10-11.oe2203sp4.aarch64.rpm",
"uboot-tools-debuginfo-2021.10-11.oe2203sp4.aarch64.rpm",
"uboot-tools-debugsource-2021.10-11.oe2203sp4.aarch64.rpm"
],
"noarch": [
"uboot-images-armv8-2021.10-11.oe2203sp4.noarch.rpm",
"uboot-tools-help-2021.10-11.oe2203sp4.noarch.rpm"
],
"src": [
"uboot-tools-2021.10-11.oe2203sp4.src.rpm"
],
"x86_64": [
"uboot-tools-2021.10-11.oe2203sp4.x86_64.rpm",
"uboot-tools-debuginfo-2021.10-11.oe2203sp4.x86_64.rpm",
"uboot-tools-debugsource-2021.10-11.oe2203sp4.x86_64.rpm"
]
},
"package": {
"ecosystem": "openEuler:22.03-LTS-SP4",
"name": "uboot-tools",
"purl": "pkg:rpm/openEuler/uboot-tools\u0026distro=openEuler-22.03-LTS-SP4"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "2021.10-11.oe2203sp4"
}
],
"type": "ECOSYSTEM"
}
]
},
{
"ecosystem_specific": {
"aarch64": [
"uboot-images-elf-2024.01-3.oe2403sp3.aarch64.rpm",
"uboot-tools-2024.01-3.oe2403sp3.aarch64.rpm",
"uboot-tools-debuginfo-2024.01-3.oe2403sp3.aarch64.rpm",
"uboot-tools-debugsource-2024.01-3.oe2403sp3.aarch64.rpm",
"uboot-images-elf-2024.01-3.oe2403.aarch64.rpm",
"uboot-tools-2024.01-3.oe2403.aarch64.rpm",
"uboot-tools-debuginfo-2024.01-3.oe2403.aarch64.rpm",
"uboot-tools-debugsource-2024.01-3.oe2403.aarch64.rpm",
"uboot-images-elf-2024.01-3.oe2403sp1.aarch64.rpm",
"uboot-tools-2024.01-3.oe2403sp1.aarch64.rpm",
"uboot-tools-debuginfo-2024.01-3.oe2403sp1.aarch64.rpm",
"uboot-tools-debugsource-2024.01-3.oe2403sp1.aarch64.rpm",
"uboot-images-elf-2024.01-3.oe2403sp2.aarch64.rpm",
"uboot-tools-2024.01-3.oe2403sp2.aarch64.rpm",
"uboot-tools-debuginfo-2024.01-3.oe2403sp2.aarch64.rpm",
"uboot-tools-debugsource-2024.01-3.oe2403sp2.aarch64.rpm"
],
"noarch": [
"uboot-images-armv8-2024.01-3.oe2403sp3.noarch.rpm",
"uboot-tools-help-2024.01-3.oe2403sp3.noarch.rpm",
"uboot-images-armv8-2024.01-3.oe2403.noarch.rpm",
"uboot-tools-help-2024.01-3.oe2403.noarch.rpm",
"uboot-images-armv8-2024.01-3.oe2403sp1.noarch.rpm",
"uboot-tools-help-2024.01-3.oe2403sp1.noarch.rpm",
"uboot-images-armv8-2024.01-3.oe2403sp2.noarch.rpm",
"uboot-tools-help-2024.01-3.oe2403sp2.noarch.rpm"
],
"src": [
"uboot-tools-2024.01-3.oe2403sp3.src.rpm",
"uboot-tools-2024.01-3.oe2403.src.rpm",
"uboot-tools-2024.01-3.oe2403sp1.src.rpm",
"uboot-tools-2024.01-3.oe2403sp2.src.rpm"
],
"x86_64": [
"uboot-tools-2024.01-3.oe2403sp3.x86_64.rpm",
"uboot-tools-debuginfo-2024.01-3.oe2403sp3.x86_64.rpm",
"uboot-tools-debugsource-2024.01-3.oe2403sp3.x86_64.rpm",
"uboot-tools-2024.01-3.oe2403.x86_64.rpm",
"uboot-tools-debuginfo-2024.01-3.oe2403.x86_64.rpm",
"uboot-tools-debugsource-2024.01-3.oe2403.x86_64.rpm",
"uboot-tools-2024.01-3.oe2403sp1.x86_64.rpm",
"uboot-tools-debuginfo-2024.01-3.oe2403sp1.x86_64.rpm",
"uboot-tools-debugsource-2024.01-3.oe2403sp1.x86_64.rpm",
"uboot-tools-2024.01-3.oe2403sp2.x86_64.rpm",
"uboot-tools-debuginfo-2024.01-3.oe2403sp2.x86_64.rpm",
"uboot-tools-debugsource-2024.01-3.oe2403sp2.x86_64.rpm"
]
},
"package": {
"ecosystem": "openEuler:24.03-LTS",
"name": "uboot-tools",
"purl": "pkg:rpm/openEuler/uboot-tools\u0026distro=openEuler-24.03-LTS"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "2024.01-3.oe2403sp2"
}
],
"type": "ECOSYSTEM"
}
]
},
{
"ecosystem_specific": {
"aarch64": [
"uboot-images-elf-2024.01-3.oe2403sp1.aarch64.rpm",
"uboot-tools-2024.01-3.oe2403sp1.aarch64.rpm",
"uboot-tools-debuginfo-2024.01-3.oe2403sp1.aarch64.rpm",
"uboot-tools-debugsource-2024.01-3.oe2403sp1.aarch64.rpm"
],
"noarch": [
"uboot-images-armv8-2024.01-3.oe2403sp1.noarch.rpm",
"uboot-tools-help-2024.01-3.oe2403sp1.noarch.rpm"
],
"src": [
"uboot-tools-2024.01-3.oe2403sp1.src.rpm"
],
"x86_64": [
"uboot-tools-2024.01-3.oe2403sp1.x86_64.rpm",
"uboot-tools-debuginfo-2024.01-3.oe2403sp1.x86_64.rpm",
"uboot-tools-debugsource-2024.01-3.oe2403sp1.x86_64.rpm"
]
},
"package": {
"ecosystem": "openEuler:24.03-LTS-SP1",
"name": "uboot-tools",
"purl": "pkg:rpm/openEuler/uboot-tools\u0026distro=openEuler-24.03-LTS-SP1"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "2024.01-3.oe2403sp1"
}
],
"type": "ECOSYSTEM"
}
]
},
{
"ecosystem_specific": {
"aarch64": [
"uboot-images-elf-2024.01-3.oe2403sp2.aarch64.rpm",
"uboot-tools-2024.01-3.oe2403sp2.aarch64.rpm",
"uboot-tools-debuginfo-2024.01-3.oe2403sp2.aarch64.rpm",
"uboot-tools-debugsource-2024.01-3.oe2403sp2.aarch64.rpm"
],
"noarch": [
"uboot-images-armv8-2024.01-3.oe2403sp2.noarch.rpm",
"uboot-tools-help-2024.01-3.oe2403sp2.noarch.rpm"
],
"src": [
"uboot-tools-2024.01-3.oe2403sp2.src.rpm"
],
"x86_64": [
"uboot-tools-2024.01-3.oe2403sp2.x86_64.rpm",
"uboot-tools-debuginfo-2024.01-3.oe2403sp2.x86_64.rpm",
"uboot-tools-debugsource-2024.01-3.oe2403sp2.x86_64.rpm"
]
},
"package": {
"ecosystem": "openEuler:24.03-LTS-SP2",
"name": "uboot-tools",
"purl": "pkg:rpm/openEuler/uboot-tools\u0026distro=openEuler-24.03-LTS-SP2"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "2024.01-3.oe2403sp2"
}
],
"type": "ECOSYSTEM"
}
]
}
],
"database_specific": {
"severity": "High"
},
"details": "This package includes the mkimage program, which allows generation of U-Boot images in various formats, and the fw_printenv and fw_setenv programs to read and modify U-Boot\u0026amp;apos;s environment.\r\n\r\nSecurity Fix(es):\n\nbarebox is a bootloader. In barebox from version 2016.03.0 to before version 2026.03.1 (and the corresponding backport to 2025.09.3), an attacker could exploit a FIT signature verification vulnerability to trick the bootloader into booting different images than those that were verified as part of a signed configuration. mkimage(1) sets the hashed-nodes property of the FIT signature node to list which nodes of the FIT were hashed as part of the signing process as these will need to be verified later on by the bootloader. However, hashed-nodes itself is not part of the hash and could therefore be modified to allow booting different images than those that have been verified. This issue has been patched in barebox versions 2026.03.1 and backported to 2025.09.3.(CVE-2026-33243)",
"id": "OESA-2026-1834",
"modified": "2026-08-06T11:10:51Z",
"published": "2026-04-11T11:10:51Z",
"references": [
{
"type": "ADVISORY",
"url": "https://www.openeuler.org/zh/security/security-bulletins/detail/?id=openEuler-SA-2026-1834"
},
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-33243"
}
],
"schema_version": "1.7.2",
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H",
"type": "CVSS_V3"
}
],
"summary": "uboot-tools security update",
"upstream": [
"CVE-2026-33243"
]
}
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Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the
vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base
model, served locally by ML-Gateway.
They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
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Related by attack behaviour
Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.
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