{"id":"CVE-2026-88833","revision":"74b811083d4e47909c32be7492b326ad","records":[{"revision":"74b811083d4e47909c32be7492b326ad","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-88833","aliases":[],"title":"Busybox: busybox: udhcpc integer underflow in dhcp packet length calculation causes denial of service","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.","state":0,"publishedAt":"2026-10-13T16:56:11.068+00:00","modifiedAt":"2026-10-16T22:22:10.834+00:00","affected":[{"ecosystem":"https://access.redhat.com/downloads/content/package-browser/","name":"busybox","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"vendor\": \"Red Hat\",\n                    \"product\": \"Red Hat Hardened Images\",\n                    \"collectionURL\": \"https://access.redhat.com/downloads/content/package-browser/\",\n                    \"packageName\": \"busybox\",\n                    \"defaultStatus\": \"affected\",\n                    \"cpes\": [\n                        \"cpe:/a:redhat:hummingbird:1\"\n                    ]\n                }"}],"metrics":[{"system":"CVSS 3.1","vector":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","score":6.5,"severity":"MEDIUM"}],"references":["https://access.redhat.com/security/cve/CVE-2026-88833","https://bugzilla.redhat.com/show_bug.cgi?id=2531347"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-88833","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-88833","identifiers":["CVE-2026-88833"]},"retained":false,"historicalAffected":[]}],"coverage":[]}