Home

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 Reserved 2026-03-31 | Published 2026-05-11 | Updated 2026-05-12 | Assigner VulnCheck




MEDIUM: 6.2CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

MEDIUM: 6.9CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N

Problem types

CWE-125 Out-of-bounds Read

Product status

Default status
unaffected

Any version
affected

Credits

Kazuma Matsumoto, a security researcher at GMO Cybersecurity by IERAE, Inc. finder

References

github.com/barebox/barebox product

github.com/barebox/barebox/releases/tag/v2026.04.0 patch

www.vulncheck.com/...-ext4-extent-parsing-out-of-bounds-read third-party-advisory

cve.org (CVE-2026-34961)

nvd.nist.gov (CVE-2026-34961)

Download JSON