{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "d646960f7986fefb460a2b062d5ccc8ccfeacc3a"
            },
            {
              "fixed": "0c83a8a45fed256ccc5fe7160b436b671fc79fb8"
            },
            {
              "fixed": "aa555ed5ed0d15efbaf27e0e9f152a6df715278a"
            },
            {
              "fixed": "32b5f0b338bf59391a1cff9a6190a72c4d2c1ba8"
            },
            {
              "fixed": "6fad2c34d451d11a9f3f946cae1105fee91d96b8"
            },
            {
              "fixed": "bf41af8f910cbb5d776a1dfa0671d31a7e262e28"
            },
            {
              "fixed": "f234197f3bda3aea5d4b1e591d6bcb3660a8b3fc"
            },
            {
              "fixed": "0a0412745c86acd089c6460da715ab966b1615e7"
            },
            {
              "fixed": "408cff6bd60636df201274d320edfdfde9ed41db"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Linux",
        "name": "Kernel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "3.3.0"
            },
            {
              "fixed": "5.10.271"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "5.11.0"
            },
            {
              "fixed": "5.15.222"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "5.16.0"
            },
            {
              "fixed": "6.1.189"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.2.0"
            },
            {
              "fixed": "6.6.158"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.7.0"
            },
            {
              "fixed": "6.12.112"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.13.0"
            },
            {
              "fixed": "6.18.55"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.19.0"
            },
            {
              "fixed": "7.2.9"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/98xxx/CVE-2026-98577.json"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nnfc: llcp: fix WKS SAP hijacking via prefix match in nfc_llcp_wks_sap()\n\nnfc_llcp_wks_sap() compares only service_name_len bytes, so a short\nservice_name like \"u\" matches longer WKS strings like \"urn:nfc:sn:snep\".\nFix by requiring exact length match before strncmp().",
  "id": "CVE-2026-98577",
  "modified": "2026-10-19T02:31:01.346629484Z",
  "published": "2026-10-18T15:18:47.635Z",
  "references": [
    {
      "type": "PACKAGE",
      "url": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/0a0412745c86acd089c6460da715ab966b1615e7"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/0c83a8a45fed256ccc5fe7160b436b671fc79fb8"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/32b5f0b338bf59391a1cff9a6190a72c4d2c1ba8"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/408cff6bd60636df201274d320edfdfde9ed41db"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/6fad2c34d451d11a9f3f946cae1105fee91d96b8"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/aa555ed5ed0d15efbaf27e0e9f152a6df715278a"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/bf41af8f910cbb5d776a1dfa0671d31a7e262e28"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/f234197f3bda3aea5d4b1e591d6bcb3660a8b3fc"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/98xxx/CVE-2026-98577.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-98577"
    }
  ],
  "schema_version": "1.9.0",
  "summary": "nfc: llcp: fix WKS SAP hijacking via prefix match in nfc_llcp_wks_sap()"
}