data/osv/GO-2026-6237.json

{
  "schema_version": "1.3.1",
  "id": "GO-2026-6237",
  "modified": "0001-01-01T00:00:00Z",
  "published": "0001-01-01T00:00:00Z",
  "summary": "Denial of service via malformed IPv4 packet in github.com/insomniacslk/dhcp",
  "details": "In github.com/insomniacslk/dhcp/dhcpv4/nclient4, BroadcastRawUDPConn.ReadFrom does not validate that the IPv4 payload length is sufficient to hold a UDP header before calculating the DHCP payload length. A frame with an IPv4 total-length field specifying fewer than eight payload bytes results in a negative DHCP length, causing a panic in buf.Consume due to a negative slice bound.",
  "affected": [
    {
      "package": {
        "name": "github.com/insomniacslk/dhcp",
        "ecosystem": "Go"
      },
      "ranges": [
        {
          "type": "SEMVER",
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "0.0.0-20260719225207-c76316d4aa82"
            }
          ]
        }
      ],
      "ecosystem_specific": {
        "imports": [
          {
            "path": "github.com/insomniacslk/dhcp/dhcpv4/nclient4",
            "symbols": [
              "BroadcastRawUDPConn.ReadFrom"
            ]
          }
        ]
      }
    }
  ],
  "references": [
    {
      "type": "FIX",
      "url": "https://github.com/insomniacslk/dhcp/commit/c76316d4aa825673b208730779843d0711021e81"
    }
  ],
  "database_specific": {
    "url": "https://pkg.go.dev/vuln/GO-2026-6237",
    "review_status": "REVIEWED"
  }
}