Vulnerability 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.
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Pengutronix | Barebox | < 2026.04.0 |
Related Weaknesses (CWE)
References
- https://github.com/barebox/bareboxProduct
- https://github.com/barebox/barebox/releases/tag/v2026.04.0Release Notes
- https://www.vulncheck.com/advisories/barebox-ext4-extent-parsing-out-of-bounds-rThird Party Advisory
FAQ
What is CVE-2026-34961?
CVE-2026-34961 is a vulnerability with a CVSS score of 6.2 (MEDIUM). 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...
How severe is CVE-2026-34961?
CVE-2026-34961 has been rated MEDIUM with a CVSS base score of 6.2/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-34961?
Check the references section above for vendor advisories and patch information. Affected products include: Pengutronix Barebox.