CVE-2026-34961: medium-severity vulnerability in barebox
barebox ext4 Extent Parsing Out-of-Bounds Read
Published · Updated
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13Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 6.9epss 0.2%
barebox prior to version 2026.04.0 contains out-of-bounds read vulnerabilities in ext4 extent parsing due to missing validation of the eh_entries field against buffer capacity in fs/ext4/ext4_common.c. Attackers can supply a malicious ext4 filesystem image via USB, SD card, or network boot to trigger heap out-of-bounds reads during boot-time filesystem parsing, potentially redirecting reads to arbitrary disk offsets.
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
Affected products
barebox · bareboxRelated CVEs — barebox
In the same product, most dangerous first.
CVE-2026-34960HIGHbarebox Out-of-Bounds Read in DHCP Option ParsingEPSS 0.3%CVE-2026-34963HIGHbarebox EFI PE Loader Memory Safety VulnerabilitiesEPSS 0.2%CVE-2026-34962MEDIUMbarebox ext4 Directory Parsing Infinite Loop Denial of ServiceEPSS 0.1%CVE-2026-33243HIGHbarebox: FIT Signature Verification Bypass VulnerabilityEPSS 0.1%