{
  "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-2026-31629",
    "sourceURL": "https://www.cve.org/CVERecord?id=CVE-2026-31629",
    "idYear": 2026,
    "status": "PUBLISHED",
    "publishedAt": "2026-04-24T14:42:49.849Z",
    "updatedAt": "2026-10-15T01:17:21.139Z",
    "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: llcp: add missing return after LLCP_CLOSED checks",
      "summary": "In the Linux kernel, the following vulnerability has been resolved:\n\nnfc: llcp: add missing return after LLCP_CLOSED checks\n\nIn nfc_llcp_recv_hdlc() and nfc_llcp_recv_disc(), when the socket\nstate is LLCP_CLOSED, the code correctly calls release_sock() and\nnfc_llcp_sock_put() but fails to return. Execution falls through to\nthe remainder of the function, which calls release_sock() and\nnfc_llcp_sock_put() again. This results in a double release_sock()\nand a refcount underflow via double nfc_llcp_sock_put(), leading to\na use-after-free.\n\nAdd the missing return statements after the LLCP_CLOSED branches\nin both functions to prevent the fall-through.",
      "affected": [
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "d646960f7986fefb460a2b062d5ccc8ccfeacc3a",
              "status": "affected",
              "versionType": "git",
              "lessThan": "b2a23529593d011fb433a3d711fc597ed6a6bd2f"
            },
            {
              "version": "d646960f7986fefb460a2b062d5ccc8ccfeacc3a",
              "status": "affected",
              "versionType": "git",
              "lessThan": "665315df9c3486cb213fc44d83cc8bcd47fe0d26"
            },
            {
              "version": "d646960f7986fefb460a2b062d5ccc8ccfeacc3a",
              "status": "affected",
              "versionType": "git",
              "lessThan": "9b49e2a4b8219a2fc5cebf94f4ec34e509aff8a6"
            },
            {
              "version": "d646960f7986fefb460a2b062d5ccc8ccfeacc3a",
              "status": "affected",
              "versionType": "git",
              "lessThan": "0eb1263a3b8c36418c9ba295c9ab3abed664edbf"
            },
            {
              "version": "d646960f7986fefb460a2b062d5ccc8ccfeacc3a",
              "status": "affected",
              "versionType": "git",
              "lessThan": "796e0cac058252d0ad34ebe288e6f7979b5fc9b2"
            },
            {
              "version": "d646960f7986fefb460a2b062d5ccc8ccfeacc3a",
              "status": "affected",
              "versionType": "git",
              "lessThan": "8977fad2b3c6eefd414131168d597c5d1d5e1abf"
            },
            {
              "version": "d646960f7986fefb460a2b062d5ccc8ccfeacc3a",
              "status": "affected",
              "versionType": "git",
              "lessThan": "ff3d9e8f7244293e303f7b6ef70774291c7c27e9"
            },
            {
              "version": "d646960f7986fefb460a2b062d5ccc8ccfeacc3a",
              "status": "affected",
              "versionType": "git",
              "lessThan": "aba4712e8f0381cd5d196534ce2ad082626a5ab6"
            },
            {
              "version": "d646960f7986fefb460a2b062d5ccc8ccfeacc3a",
              "status": "affected",
              "versionType": "git",
              "lessThan": "2b5dd4632966c39da6ba74dbc8689b309065e82c"
            }
          ]
        },
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "affected",
          "versions": [
            {
              "version": "3.3",
              "status": "affected"
            },
            {
              "version": "0",
              "status": "unaffected",
              "versionType": "semver",
              "lessThan": "3.3"
            },
            {
              "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": "*"
            }
          ]
        }
      ]
    }
  }
}