CVE-2026-98481

Status: ReceivedUnscored—

Severity—Unscored

Exploitation probability0.21 %higher than 11% of CVEs

Active exploitationNonot in the CISA catalog

Public exploitNot knownno public code found

In the Linux kernel, the following vulnerability has been resolved:

nfc: port100: reject frames whose declared length exceeds the received data

port100_recv_response() passes the URB transfer buffer to port100_rx_frame_is_valid(), which checksums le16_to_cpu(frame->datalen) bytes of frame->data. datalen is a 16-bit field supplied by the device and is never checked against the number of bytes actually received (urb->actual_length), so a device reporting a datalen larger than the received frame makes port100_data_checksum() read out of bounds past the transfer buffer.

Reject a response whose declared frame size does not fit the received length before validating it.

Read full descriptionShow less

Found by 0sec (https://0sec.ai) using automated source analysis; the missing bound is evident from source. Compile-tested.

CVSS

NVD hasn't assigned a CVSS score to this CVE (common since the April 2026 policy change).

Exploitation probability (EPSS)

Probability of exploitation in the next 30 days: 0.21 %
Percentile among all scored CVEs: 11
Score date: 10/20/2026

EPSS (Exploit Prediction Scoring System, FIRST) estimates how likely a vulnerability is to be exploited in the wild within 30 days. It complements CVSS (impact) and CISA KEV (confirmed exploitation).

Affected technologies (1)

⚠ AI-inferred from the description — NVD hasn't analyzed this CVE yet, these aren't verified CPEs.

Linux — Linux Kernel^AI

References

Show 8 references

Raw JSON (NVD)

Show

{
  "id": "CVE-2026-98481",
  "cveTags": [],
  "metrics": {},
  "affected": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "affectedData": [
        {
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "product": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "562d4d59b8a1d5f3ca75115d6ac10c7b7bc68c06",
              "lessThan": "0d482995f0cdd0302450aa300c684c642d8ab31f",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "562d4d59b8a1d5f3ca75115d6ac10c7b7bc68c06",
              "lessThan": "9e8df087826b9999d1b83b06f5d85675d5a69c9e",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "562d4d59b8a1d5f3ca75115d6ac10c7b7bc68c06",
              "lessThan": "db66a30588630c7de30ef033f00daddef69f6ad9",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "562d4d59b8a1d5f3ca75115d6ac10c7b7bc68c06",
              "lessThan": "144ad477c381e2c592b64898d04ab4ce03b32861",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "562d4d59b8a1d5f3ca75115d6ac10c7b7bc68c06",
              "lessThan": "e4da1452e10c6472a4bac48dc2f6a35fff1fcd69",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "562d4d59b8a1d5f3ca75115d6ac10c7b7bc68c06",
              "lessThan": "14b1467cfc6630583650f33538174c5a1ec685ab",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "562d4d59b8a1d5f3ca75115d6ac10c7b7bc68c06",
              "lessThan": "035056e07ea65be670284246d9bc62f2f00ff4a3",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "562d4d59b8a1d5f3ca75115d6ac10c7b7bc68c06",
              "lessThan": "092c6a605cbd6414ef499834c2e0da69c2c3388e",
              "versionType": "git"
            }
          ],
          "programFiles": [
            "drivers/nfc/port100.c"
          ],
          "defaultStatus": "unaffected"
        },
        {
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "product": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "3.13"
            },
            {
              "status": "unaffected",
              "version": "0",
              "lessThan": "3.13",
              "versionType": "semver"
            },
            {
              "status": "unaffected",
              "version": "5.10.271",
              "versionType": "semver",
              "lessThanOrEqual": "5.10.*"
            },
            {
              "status": "unaffected",
              "version": "5.15.222",
              "versionType": "semver",
              "lessThanOrEqual": "5.15.*"
            },
            {
              "status": "unaffected",
              "version": "6.1.189",
              "versionType": "semver",
              "lessThanOrEqual": "6.1.*"
            },
            {
              "status": "unaffected",
              "version": "6.6.158",
              "versionType": "semver",
              "lessThanOrEqual": "6.6.*"
            },
            {
              "status": "unaffected",
              "version": "6.12.112",
              "versionType": "semver",
              "lessThanOrEqual": "6.12.*"
            },
            {
              "status": "unaffected",
              "version": "6.18.55",
              "versionType": "semver",
              "lessThanOrEqual": "6.18.*"
            },
            {
              "status": "unaffected",
              "version": "7.2.9",
              "versionType": "semver",
              "lessThanOrEqual": "7.2.*"
            },
            {
              "status": "unaffected",
              "version": "7.3",
              "versionType": "original_commit_for_fix",
              "lessThanOrEqual": "*"
            }
          ],
          "programFiles": [
            "drivers/nfc/port100.c"
          ],
          "defaultStatus": "affected"
        }
      ]
    }
  ],
  "published": "2026-10-18T16:16:58.697",
  "references": [
    {
      "url": "https://git.kernel.org/stable/c/035056e07ea65be670284246d9bc62f2f00ff4a3",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/092c6a605cbd6414ef499834c2e0da69c2c3388e",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/0d482995f0cdd0302450aa300c684c642d8ab31f",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/144ad477c381e2c592b64898d04ab4ce03b32861",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/14b1467cfc6630583650f33538174c5a1ec685ab",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/9e8df087826b9999d1b83b06f5d85675d5a69c9e",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/db66a30588630c7de30ef033f00daddef69f6ad9",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/e4da1452e10c6472a4bac48dc2f6a35fff1fcd69",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ],
  "vulnStatus": "Received",
  "descriptions": [
    {
      "lang": "en",
      "value": "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."
    }
  ],
  "lastModified": "2026-10-19T10:18:59.333",
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
}