{
  "schemaVersion": 1,
  "attribution": [
    {
      "source": "CISA Known Exploited Vulnerabilities",
      "url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog",
      "licence": "US government work"
    },
    {
      "source": "GitHub Advisory Database",
      "url": "https://github.com/advisories",
      "licence": "CC BY 4.0"
    },
    {
      "source": "Have I Been Pwned",
      "url": "https://haveibeenpwned.com/",
      "licence": "CC BY 4.0"
    },
    {
      "source": "CVE Program (CVE records)",
      "url": "https://www.cve.org/Legal/TermsOfUse",
      "licence": "CVE Terms of Use",
      "notice": "Copyright © 1999-2026, The MITRE Corporation. CVE is a trademark and the CVE logo is a registered trademark of The MITRE Corporation.",
      "terms": "CVE Usage: MITRE hereby grants you a perpetual, worldwide, non-exclusive, no-charge, royalty-free, irrevocable copyright license to reproduce, prepare derivative works of, publicly display, publicly perform, sublicense, and distribute Common Vulnerabilities and Exposures (CVE™). Any copy you make for such purposes is authorized provided that you reproduce MITRE's copyright designation and this license in any such copy."
    },
    {
      "source": "FIRST EPSS",
      "url": "https://www.first.org/epss/",
      "licence": "free to use; FIRST requests attribution"
    }
  ],
  "record": {
    "id": "CVE-2026-31622",
    "sourceURL": "https://www.cve.org/CVERecord?id=CVE-2026-31622",
    "idYear": 2026,
    "status": "PUBLISHED",
    "publishedAt": "2026-04-24T14:42:39.916Z",
    "updatedAt": "2026-10-15T01:17:15.197Z",
    "importedAt": "2026-10-24T01:58:02.025Z",
    "snapshot": {
      "id": "cve_2026-10-24_midnight_baseline",
      "at": "2026-10-24T00:00:00.000Z",
      "source": "https://github.com/CVEProject/cvelistV5/releases/tag/cve_2026-10-24_0100Z"
    },
    "facts": {
      "title": "NFC: digital: Bounds check NFC-A cascade depth in SDD response handler",
      "summary": "In the Linux kernel, the following vulnerability has been resolved:\n\nNFC: digital: Bounds check NFC-A cascade depth in SDD response handler\n\nThe NFC-A anti-collision cascade in digital_in_recv_sdd_res() appends 3\nor 4 bytes to target->nfcid1 on each round, but the number of cascade\nrounds is controlled entirely by the peer device.  The peer sets the\ncascade tag in the SDD_RES (deciding 3 vs 4 bytes) and the\ncascade-incomplete bit in the SEL_RES (deciding whether another round\nfollows).\n\nISO 14443-3 limits NFC-A to three cascade levels and target->nfcid1 is\nsized accordingly (NFC_NFCID1_MAXSIZE = 10), but nothing in the driver\nactually enforces this.  This means a malicious peer can keep the\ncascade running, writing past the heap-allocated nfc_target with each\nround.\n\nFix this by rejecting the response when the accumulated UID would exceed\nthe buffer.\n\nCommit e329e71013c9 (\"NFC: nci: Bounds check struct nfc_target arrays\")\nfixed similar missing checks against the same field on the NCI path.",
      "affected": [
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "2c66daecc4092e6049673c281b2e6f0d5e59a94c",
              "status": "affected",
              "versionType": "git",
              "lessThan": "9ba6bb09e00b922d902f684f575779e5433fe6e3"
            },
            {
              "version": "2c66daecc4092e6049673c281b2e6f0d5e59a94c",
              "status": "affected",
              "versionType": "git",
              "lessThan": "f83b399aa05a0712e3b1569a30d3d90b3533d2ef"
            },
            {
              "version": "2c66daecc4092e6049673c281b2e6f0d5e59a94c",
              "status": "affected",
              "versionType": "git",
              "lessThan": "20663102c14566e900e1d2f679e30b7f1694f387"
            },
            {
              "version": "2c66daecc4092e6049673c281b2e6f0d5e59a94c",
              "status": "affected",
              "versionType": "git",
              "lessThan": "2819f34e08bdffb6f06a51c67948ec5737fb166a"
            },
            {
              "version": "2c66daecc4092e6049673c281b2e6f0d5e59a94c",
              "status": "affected",
              "versionType": "git",
              "lessThan": "1bec5698b55aa2be5c3b983dba657c01d0fd3dbc"
            },
            {
              "version": "2c66daecc4092e6049673c281b2e6f0d5e59a94c",
              "status": "affected",
              "versionType": "git",
              "lessThan": "5a59bf70c38ee1eb4be03bab830bbc3a6f0bd1f1"
            },
            {
              "version": "2c66daecc4092e6049673c281b2e6f0d5e59a94c",
              "status": "affected",
              "versionType": "git",
              "lessThan": "8d9d9bf3565271ca7ab9c716a94e87296177e7ba"
            },
            {
              "version": "2c66daecc4092e6049673c281b2e6f0d5e59a94c",
              "status": "affected",
              "versionType": "git",
              "lessThan": "cc024a3de265ef6c58957f4990eccb9f806208cb"
            },
            {
              "version": "2c66daecc4092e6049673c281b2e6f0d5e59a94c",
              "status": "affected",
              "versionType": "git",
              "lessThan": "46ce8be2ced389bccd84bcc04a12cf2f4d0c22d1"
            }
          ]
        },
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "affected",
          "versions": [
            {
              "version": "3.13",
              "status": "affected"
            },
            {
              "version": "0",
              "status": "unaffected",
              "versionType": "semver",
              "lessThan": "3.13"
            },
            {
              "version": "5.10.258",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "5.10.*"
            },
            {
              "version": "5.15.209",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "5.15.*"
            },
            {
              "version": "6.1.175",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.1.*"
            },
            {
              "version": "6.6.136",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.6.*"
            },
            {
              "version": "6.12.83",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.12.*"
            },
            {
              "version": "6.18.24",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.18.*"
            },
            {
              "version": "6.19.14",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.19.*"
            },
            {
              "version": "7.0.1",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "7.0.*"
            },
            {
              "version": "7.1",
              "status": "unaffected",
              "versionType": "original_commit_for_fix",
              "lessThanOrEqual": "*"
            }
          ]
        }
      ]
    }
  }
}