MEDIUM 6.5 NVD
CVE-2026-88833
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
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.
References
- https://access.redhat.com/security/cve/CVE-2026-88833
- https://bugzilla.redhat.com/show_bug.cgi?id=2531347
This medium severity vulnerability with a CVSS score of 6.5 was published on 2026-10-13 via NVD.
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