CVE-2026-34962 (GCVE-0-2026-34962)
Vulnerability from cvelistv5 – Published: 2026-05-11 21:58 – Updated: 2026-07-18 03:02
VLAI
EPSS
VEX
Title
barebox ext4 Directory Parsing Infinite Loop Denial of Service
Summary
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.
Severity
6.2 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-05-13 14:28 UTC
CWE
- CWE-835 - Loop with Unreachable Exit Condition ('Infinite Loop')
Assigner
References
4 references
| URL | Tags |
|---|---|
| https://github.com/barebox/barebox | product |
| https://github.com/barebox/barebox/releases/tag/v… | patch |
| https://www.vulncheck.com/advisories/barebox-ext4… | third-party-advisory |
| https://y637f9qq2x.com/posts/barebox-sandbox-vulns/ | technical-description |
Impacted products
Date Public
2026-05-11 00:00
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