CVE-2026-34961barebox 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.…
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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
- 7.7 HIGH (v3.1, NVD)CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H
- Weakness (CWE)
- CWE-125
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- Not given
- NVD analysis
- Modified
- Record last updated
- Jul 18, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
pengutronix barebox pengutronix:barebox | before 2026.04.0 | NVD |
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-readthird-party-advisory
- https://y637f9qq2x.com/posts/barebox-sandbox-vulns/
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.