VIR Vulnerability Intelligence Relay

CVE-2026-34960

medium
Published 2026-05-11 · Modified 2026-05-16
CVSS v3
6.5
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CVSS v2
—
VIR risk
6.5

Description

barebox prior to version 2026.04.0 contains an out-of-bounds read vulnerability in DHCP option parsing within the dhcp_message_type() function that fails to verify the options pointer remains within received packet bounds. An attacker on the same broadcast domain can send a crafted DHCP Offer or ACK packet without a proper 0xff end marker to cause the parser to read past valid packet data and potentially crash the system.

Predictions

Exploit likelihood
65%
Patch ETA
—

Heuristic predictions, AS-IS, for prioritization only.

Mitigations

vendor Authored 2026-05-27

Vendor advisory: disclosure@vulncheck.com — https://github.com/barebox/barebox/releases/tag/v2026.04.0

Application impact
VendorProductVersionsFixed
pengutronixbarebox{"endExcluding":"2026.04.0"}2026.04.0

References

CWEs

CWE-125

Verify integrity in audit chain (admin only). AS-IS.