{
  "schema_version": "1.6.1",
  "id": "RPI-CVE-2026-98481",
  "modified": "2026-10-19T04:30:01Z",
  "upstream": [
    "CVE-2026-98481"
  ],
  "published": "2026-10-18T15:22:13Z",
  "summary": "nfc: port100: reject frames whose declared length exceeds the received data",
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nnfc: port100: reject frames whose declared length exceeds the received data\n\nport100_recv_response() passes the URB transfer buffer to\nport100_rx_frame_is_valid(), which checksums le16_to_cpu(frame->datalen)\nbytes of frame->data. datalen is a 16-bit field supplied by the device\nand is never checked against the number of bytes actually received\n(urb->actual_length), so a device reporting a datalen larger than the\nreceived frame makes port100_data_checksum() read out of bounds past the\ntransfer buffer.\n\nReject a response whose declared frame size does not fit the received\nlength before validating it.\n\nFound by 0sec (https://0sec.ai) using automated source analysis; the\nmissing bound is evident from source. Compile-tested.",
  "affected": [
    {
      "package": {
        "ecosystem": "Raspberry Pi OS:12",
        "name": "linux"
      },
      "versions": [
        "1:6.1.47-1+rpt4"
      ],
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "linux-image-6.1.0-rpi3-rpi-2712",
            "binary_version": "1:6.1.47-1+rpt4"
          },
          {
            "binary_name": "linux-image-6.1.0-rpi3-rpi-v6",
            "binary_version": "1:6.1.47-1+rpt4"
          },
          {
            "binary_name": "linux-image-6.1.0-rpi3-rpi-v7",
            "binary_version": "1:6.1.47-1+rpt4"
          },
          {
            "binary_name": "linux-image-6.1.0-rpi3-rpi-v7l",
            "binary_version": "1:6.1.47-1+rpt4"
          },
          {
            "binary_name": "linux-image-6.1.0-rpi3-rpi-v8",
            "binary_version": "1:6.1.47-1+rpt4"
          }
        ]
      },
      "database_specific": {
        "per_version": {
          "1:6.1.47-1+rpt4": {
            "linux_commit": "655fc658a15ae7a6f37103754adb39ba52a9a14e",
            "upstream_version": "6.1.47",
            "assessment": "commit ancestry (strak rule)",
            "upstream_fixed": "6.1.189",
            "compiled_filter": false
          }
        }
      }
    }
  ],
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-98481"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/0d482995f0cdd0302450aa300c684c642d8ab31f"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/9e8df087826b9999d1b83b06f5d85675d5a69c9e"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/db66a30588630c7de30ef033f00daddef69f6ad9"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/144ad477c381e2c592b64898d04ab4ce03b32861"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/e4da1452e10c6472a4bac48dc2f6a35fff1fcd69"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/14b1467cfc6630583650f33538174c5a1ec685ab"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/035056e07ea65be670284246d9bc62f2f00ff4a3"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/092c6a605cbd6414ef499834c2e0da69c2c3388e"
    }
  ],
  "database_specific": {
    "source": "https://git.kernel.org/pub/scm/linux/security/vulns.git",
    "upstream_modified": "2026-10-18T15:22:13Z"
  }
}