Description (CNA)
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.
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| Red Hat / Red Hat Hardened Images | affected |
CWE
CWE-191
References
- https://access.redhat.com/security/cve/CVE-2026-88833
- https://bugzilla.redhat.com/show_bug.cgi?id=2531347
ADP enrichment
No English description supplied.
No references supplied.