CVE•Published 2026-05-11•Modified 2026-05-13•0 articles on news•5 live references•NVD data

CVE-2026-34962Pengutronix · Barebox

Vulnerability data via NVD (ingested)

CVSS v3.1

6.2

MEDIUM

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

EPSS percentile

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Weaknesses (CWE)

CWE-835Loop with Unreachable Exit Condition ('Infinite Loop')

Description

barebox version prior to 2026.04.0 contains a denial-of-service vulnerability in ext4 directory parsing in fs/ext4/ext4_common.c where the ext4fs_iterate_dir() function fails to validate that directory entry length values are non-zero. Attackers can supply a malicious ext4 filesystem image with a crafted directory entry containing a direntlen value of 0 to cause an infinite loop during directory listing or path resolution, resulting in the boot process hanging indefinitely.

Timeline

Published 2026-05-11

Modified 2026-05-13

External references

NVD MITRE Exploit-DB Sploitus VulnCheck

Search for exposed instances

Shodan + Censys queries derived from NVD's CPE data. The vuln tag catches assets Shodan has explicitly linked to this CVE; the product / banner fingerprints find exposed instances even when the vuln tag was never applied (which is common).

Shodan · vuln tag0 hosts

vuln:CVE-2026-34962

Hosts Shodan has explicitly fingerprinted as vulnerable.

Shodan · product

product:"Pengutronix Barebox"

All exposed Pengutronix Barebox instances — cross-reference with the CVE's affected-version range.

Shodan · banner/body mention

http.html:"Barebox"

HTTP body or banner mentions "Barebox" — catches deploys Shodan didn't identify as a product.

More intel sources (5)

Shodan report

vuln:CVE-2026-34962