CVE-2026-34962mediumCWE-835

CVE-2026-34962: fallo de gravedad media en barebox

barebox ext4 Directory Parsing Infinite Loop Denial of Service

Publicada el · Actualizada el

Seguir esta CVE+ Monitorear barebox

Aviso por correo cuando entre en el KEV, tenga PoC pública o suba de nota.

13Vexday Risk Score

Sin señal de explotación. Ningún artefacto público de explotación conocido hasta ahora.

ssvc Trackcvss 6.9epss 0.1%
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.
CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
Productos afectados
barebox · barebox
CVEs relacionadas — barebox

En el mismo producto, de las más peligrosas a las menos.

CVE-2026-34960HIGHbarebox Out-of-Bounds Read in DHCP Option ParsingEPSS 0.3%CVE-2026-34961MEDIUMbarebox ext4 Extent Parsing Out-of-Bounds ReadEPSS 0.2%CVE-2026-34963HIGHbarebox EFI PE Loader Memory Safety VulnerabilitiesEPSS 0.2%CVE-2026-33243HIGHbarebox: FIT Signature Verification Bypass VulnerabilityEPSS 0.1%