Medium severity6.2NVD Advisory· Published May 11, 2026· Updated May 13, 2026
CVE-2026-34962
CVE-2026-34962
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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Affected products
3Patches
Vulnerability mechanics
References
2- www.vulncheck.com/advisories/barebox-ext4-directory-parsing-infinite-loop-denial-of-servicenvdThird Party Advisory
- github.com/barebox/barebox/releases/tag/v2026.04.0nvdRelease Notes
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