CVE-2026-88833 | BDVDB-2026-387756 Detail

Description#

A flaw was found in BusyBox's udhcpc DHCP client. When processing raw DHCP packets, the client replaces the validated packet length with an attacker-controlled value from the IP header without re-validating the minimum size. This leads to an integer underflow when subtracting header sizes, causing a subsequent memory copy with a massively oversized length. An attacker on the same network segment can send a specially crafted packet to crash the DHCP client, resulting in denial of service and loss of network connectivity.

Impact#

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Exploit#

History#

1. Version 12026-10-13Record published in the CVE List.
2. Version 22026-11-09Most recent update recorded in the CVE List.