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            "title": "Busybox: busybox: udhcpc integer underflow in dhcp packet length calculation causes denial of service",
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                        "attackComplexity": "LOW",
                        "attackVector": "ADJACENT_NETWORK",
                        "availabilityImpact": "HIGH",
                        "baseScore": 6.5,
                        "baseSeverity": "MEDIUM",
                        "confidentialityImpact": "NONE",
                        "integrityImpact": "NONE",
                        "privilegesRequired": "NONE",
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                        "userInteraction": "NONE",
                        "vectorString": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
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                    "lang": "en",
                    "value": "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."
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                    "packageName": "busybox",
                    "defaultStatus": "affected",
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                    "name": "RHBZ#2531347",
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            "datePublic": "2026-10-13T13:49:21.595Z",
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                            "cweId": "CWE-191",
                            "description": "Integer Underflow (Wrap or Wraparound)",
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            ],
            "x_redhatCweChain": "CWE-191: Integer Underflow (Wrap or Wraparound)",
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                {
                    "lang": "en",
                    "value": "If feasible, use udhcpc in LISTEN_KERNEL mode instead of LISTEN_RAW, or use an alternative DHCP client (dhclient, systemd-networkd). Restrict DHCP traffic on the local segment (for example DHCP snooping on switches)."
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                {
                    "lang": "en",
                    "time": "2026-09-09T00:00:00.000Z",
                    "value": "Reported to Red Hat."
                },
                {
                    "lang": "en",
                    "time": "2026-10-13T13:49:21.595Z",
                    "value": "Made public."
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            ],
            "credits": [
                {
                    "lang": "en",
                    "value": "Red Hat would like to thank Shubham Raj (Causal Security) for reporting this issue."
                }
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