CVE-2026-34960

Zwakheid

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.

Getroffen producten

• pengutronix barebox

Bronnen

• https://github.com/barebox/barebox
• https://github.com/barebox/barebox/releases/tag/v2026.04.0
• https://www.vulncheck.com/advisories/barebox-out-of-bounds-read-in-dhcp-option-parsing
• https://y637f9qq2x.com/posts/barebox-sandbox-vulns/