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CVE-2026-34961

barebox ext4 Extent Parsing Out-of-Bounds Read

Published: May 11, 2026Updated: Jul 18, 2026 Sources: CVE List NVDCWE-125
6.2MEDIUM
NVD MITRE
EPSS Score
0.2%
Top 89.1%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
No Fix Available
Self-Check
Not available

Description

barebox prior to version 2026.04.0 contains out-of-bounds read vulnerabilities in ext4 extent parsing due to missing validation of the eh_entries field against buffer capacity in fs/ext4/ext4_common.c. Attackers can supply a malicious ext4 filesystem image via USB, SD card, or network boot to trigger heap out-of-bounds reads during boot-time filesystem parsing, potentially redirecting reads to arbitrary disk offsets.

No summary for this CVE yet.

CVSS Vector Breakdown

AV:LAC:LPR:NUI:NS:UC:NI:NA:H
Exploitability
AV:LAttack Vector
Local
AC:LAttack Complexity
Low
PR:NPrivileges Required
None
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:NConfidentiality
None
I:NIntegrity
None
A:HAvailability
High
Open in CVSS calculator →

Weaknesses

CWE-125

Affected Products

barebox
oss-project
bareboxLibrary
OSS Libraries / generic-library
pengutronix
commercial·DEaka pengutronix barebox, rauc
bareboxEmbedded
Hardware Firmware / bios-uefi

Exploitability

No known exploits, KEV entries, or remediation guidance available for this vulnerability yet.

Attack Graph

Products CVE Techniques Tactics

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MITRE ATT&CK

1 technique
Collection
View detailed technique mapping

References

https://github.com/barebox/barebox
github.com
https://github.com/barebox/barebox/releases/tag/v2026.04.0
github.com
https://www.vulncheck.com/advisories/barebox-ext4-extent-parsing-out-of-bounds-read
vulncheck.com
and 1 more references View all →

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