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.
Published: 2026-05-11
Score: 6.9 Medium
EPSS: < 1% Very Low
KEV: No
Impact: n/a
Action: n/a
AI Analysis

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Remediation

No vendor fix or workaround currently provided.

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Tracking

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Advisories

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History

Wed, 13 May 2026 20:00:00 +0000

Type Values Removed Values Added
First Time appeared Pengutronix
Pengutronix barebox
CPEs cpe:2.3:a:pengutronix:barebox:*:*:*:*:*:*:*:*
Vendors & Products Pengutronix
Pengutronix barebox

Tue, 12 May 2026 14:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Tue, 12 May 2026 00:00:00 +0000

Type Values Removed Values Added
First Time appeared Barebox
Barebox barebox
Vendors & Products Barebox
Barebox barebox

Mon, 11 May 2026 22:00:00 +0000

Type Values Removed Values Added
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.
Title barebox ext4 Extent Parsing Out-of-Bounds Read
Weaknesses CWE-125
References
Metrics cvssV3_1

{'score': 6.2, 'vector': 'CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H'}

cvssV4_0

{'score': 6.9, 'vector': 'CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N'}


Subscriptions

Barebox Barebox
Pengutronix Barebox
cve-icon MITRE

Status: PUBLISHED

Assigner: VulnCheck

Published:

Updated: 2026-05-12T14:28:22.639Z

Reserved: 2026-03-31T17:58:43.754Z

Link: CVE-2026-34961

cve-icon Vulnrichment

Updated: 2026-05-12T13:39:18.204Z

cve-icon NVD

Status : Analyzed

Published: 2026-05-11T22:22:11.000

Modified: 2026-05-13T19:57:51.270

Link: CVE-2026-34961

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-05-12T00:15:07Z

Weaknesses