{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "19cfe5843e86cc95542d9d875c9386e197956d75"
            },
            {
              "fixed": "88b36d36e12c9ba76decdb580d9c1907c084e587"
            },
            {
              "fixed": "587fc2a5a35b41883b22b8f808fe5d345208914b"
            },
            {
              "fixed": "f04ac9bf2379f3e2470c400c235eb12f74891bef"
            },
            {
              "fixed": "02030f95820c42431280f4f945ff34247fb840ff"
            },
            {
              "fixed": "99fdb5c2522f365efa199d0117b641e35097041e"
            },
            {
              "fixed": "749a9048bf51a668ec3ab6c0392ba32325607281"
            },
            {
              "fixed": "eeb16fb24cfe67947b832fd9ada5f488afc72579"
            },
            {
              "fixed": "f4c7f37f0ab990952539dc68d931d65c3657600a"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Linux",
        "name": "Kernel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "3.8.0"
            },
            {
              "fixed": "5.10.270"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "5.11.0"
            },
            {
              "fixed": "5.15.221"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "5.16.0"
            },
            {
              "fixed": "6.1.188"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.2.0"
            },
            {
              "fixed": "6.6.157"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.7.0"
            },
            {
              "fixed": "6.12.110"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.13.0"
            },
            {
              "fixed": "6.18.52"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.19.0"
            },
            {
              "fixed": "7.2.6"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/90xxx/CVE-2026-90223.json"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nnfc: llcp: bound SNL TLV parsing to the skb and add length checks\n\nnfc_llcp_recv_snl() walked the SNL TLV list using a u16 offset/length\npair derived from skb-\u003elen, without bounding reads to the actual skb\ndata. Three problems followed:\n\n  - For a short frame (skb-\u003elen \u003c LLCP_HEADER_SIZE), tlv_len underflowed.\n  - The per-TLV header (type, length) was read without checking that two\n    bytes remained.\n  - A declared TLV length could run past the end of the buffer, and an\n    SDREQ with length == 0 made \"service_name_len = length - 1\" underflow\n    (size_t), driving an out-of-bounds read in the following strncmp() /\n    nfc_llcp_sock_from_sn(). The SDRES case likewise read tlv[2]/tlv[3]\n    without a length check.\n\nA nearby NFC device can reach this without authentication; LLCP link\nactivation happens automatically after NFC-DEP.\n\nWalk the TLV list by pointer, bounded by skb_tail_pointer() over the\nlinear skb data, and validate each TLV declared length before use. Add\nexplicit length checks for SDREQ (\u003e= 1) and SDRES (exactly 2).\n\nFound by 0sec automated security-research tooling (https://0sec.ai).",
  "id": "CVE-2026-90223",
  "modified": "2026-09-19T03:30:20.416716376Z",
  "published": "2026-09-17T16:07:33.355Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/02030f95820c42431280f4f945ff34247fb840ff"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/587fc2a5a35b41883b22b8f808fe5d345208914b"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/749a9048bf51a668ec3ab6c0392ba32325607281"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/88b36d36e12c9ba76decdb580d9c1907c084e587"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/99fdb5c2522f365efa199d0117b641e35097041e"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/eeb16fb24cfe67947b832fd9ada5f488afc72579"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/f04ac9bf2379f3e2470c400c235eb12f74891bef"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/f4c7f37f0ab990952539dc68d931d65c3657600a"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/90xxx/CVE-2026-90223.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-90223"
    },
    {
      "type": "PACKAGE",
      "url": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
    }
  ],
  "schema_version": "1.9.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "nfc: llcp: bound SNL TLV parsing to the skb and add length checks"
}