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VULNERABILITIES

CVE-2026-34962 Details

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.

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References to Advisories, Solutions, and Tools

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URLSource(s)Tag(s)
https://github.com/barebox/barebox [email protected]Product
https://github.com/barebox/barebox/releases/tag/v2026.04.0 [email protected]Release Notes
https://www.vulncheck.com/advisories/barebox-ext4-directory-parsing-infinite-loop-denial-of-service [email protected]Third Party Advisory
https://y637f9qq2x.com/posts/barebox-sandbox-vulns/ [email protected]

Weakness Enumeration

CWE-IDCWE NameSource
CWE-835Loop with Unreachable Exit Condition ('Infinite Loop')[email protected]

Affected Products

ProductVersions
pengutronix barebox
< 2026.04.0

CPE

  • cpe:2.3:a:pengutronix:barebox:*:*:*:*:*:*:*:*

Remediation

  • No remediation found in references.

Change History

5 change records found show changes

QUICK INFO

CVE Dictionary Entry:
CVE-2026-34962
NVD Published Date:
May 11, 2026
NVD Last Modified:
Jul 18, 2026
Source:
[email protected]
CVE-2026-34962 Details - Not Deferred