Unchecked Download size in Uboot

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Summary

CVECVE-2022-2347
StatePUBLISHED
AssignerGoogle
Source PriorityCVE Program / NVD first with legacy fallback
Published2022-09-23 13:15:10 UTC
Updated2026-05-12 10:16:37 UTC
DescriptionThere exists an unchecked length field in UBoot. The U-Boot DFU implementation does not bound the length field in USB DFU download setup packets, and it does not verify that the transfer direction corresponds to the specified command. Consequently, if a physical attacker crafts a USB DFU download setup packet with a `wLength` greater than 4096 bytes, they can write beyond the heap-allocated request buffer.

Risk And Classification

Primary CVSS: v3.1 7.1 HIGH from [email protected]

CVSS:3.1/AV:P/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H

EPSS: 0.000380000 probability, percentile 0.113400000 (date 2026-05-12)

Problem Types: CWE-122 | CWE-787 | CWE-122 CWE-122 Heap-based Buffer Overflow

VersionSourceTypeScoreSeverityVector
3.1[email protected]Primary7.1HIGHCVSS:3.1/AV:P/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H
3.1[email protected]Secondary7.7HIGHCVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:H
3.1CNADECLARED7.7HIGHCVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:H

CVSS v3.1 Breakdown

Attack Vector
Physical
Attack Complexity
High
Privileges Required
None
User Interaction
None
Scope
Changed
Confidentiality
High
Integrity
High
Availability
High

CVSS:3.1/AV:P/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Application Denx U-boot All All All All

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Uboot Uboot affected unspecified 2022.07 custom Not specified
ADP Siemens RUGGEDCOM ROX MX5000 affected V2.17.1 custom Not specified
ADP Siemens RUGGEDCOM ROX MX5000RE affected V2.17.1 custom Not specified
ADP Siemens RUGGEDCOM ROX RX1400 affected V2.17.1 custom Not specified
ADP Siemens RUGGEDCOM ROX RX1500 affected V2.17.1 custom Not specified
ADP Siemens RUGGEDCOM ROX RX1501 affected V2.17.1 custom Not specified
ADP Siemens RUGGEDCOM ROX RX1510 affected V2.17.1 custom Not specified
ADP Siemens RUGGEDCOM ROX RX1511 affected V2.17.1 custom Not specified
ADP Siemens RUGGEDCOM ROX RX1512 affected V2.17.1 custom Not specified
ADP Siemens RUGGEDCOM ROX RX1524 affected V2.17.1 custom Not specified
ADP Siemens RUGGEDCOM ROX RX1536 affected V2.17.1 custom Not specified
ADP Siemens RUGGEDCOM ROX RX5000 affected V2.17.1 custom Not specified

References

ReferenceSourceLinkTags
lists.debian.org/debian-lts-announce/2025/05/msg00001.html af854a3a-2127-422b-91ae-364da2661108 lists.debian.org
oss-sec: Fwd: CVE-2022-2347 - Unchecked Download Size and Direction in U-Boot USB DFU af854a3a-2127-422b-91ae-364da2661108 seclists.org Exploit, Mailing List, Third Party Advisory
cert-portal.siemens.com/productcert/html/ssa-577017.html 0b142b55-0307-4c5a-b3c9-f314f3fb7c5e cert-portal.siemens.com
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

Legacy QID Mappings

  • 182677 Debian Security Update for u-boot (CVE-2022-2347)
  • 199065 Ubuntu Security Notification for U-Boot Vulnerabilities (USN-5764-1)
  • 199969 Ubuntu Security Notification for u-boot-nezha Vulnerability (USN-6523-1)
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