{
  "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-2023-53566",
    "sourceURL": "https://www.cve.org/CVERecord?id=CVE-2023-53566",
    "idYear": 2023,
    "status": "PUBLISHED",
    "publishedAt": "2025-10-04T15:17:08.598Z",
    "updatedAt": "2026-10-15T21:41:30.987Z",
    "importedAt": "2026-10-24T01:57:03.413Z",
    "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": "netfilter: nft_set_rbtree: fix null deref on element insertion",
      "summary": "In the Linux kernel, the following vulnerability has been resolved:\n\nnetfilter: nft_set_rbtree: fix null deref on element insertion\n\nThere is no guarantee that rb_prev() will not return NULL in nft_rbtree_gc_elem():\n\ngeneral protection fault, probably for non-canonical address 0xdffffc0000000003: 0000 [#1] PREEMPT SMP KASAN\nKASAN: null-ptr-deref in range [0x0000000000000018-0x000000000000001f]\n nft_add_set_elem+0x14b0/0x2990\n  nf_tables_newsetelem+0x528/0xb30\n\nFurthermore, there is a possible use-after-free while iterating,\n'node' can be free'd so we need to cache the next value to use.",
      "affected": [
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "7ab87a326f20c52ff4d9972052d085be951c704b",
              "status": "affected",
              "versionType": "git",
              "lessThan": "b76db53ee8802ee5683f8cb401d7e2ec6f9b3d56"
            },
            {
              "version": "181859bdfb9734aca449512fccaee4cacce64aed",
              "status": "affected",
              "versionType": "git",
              "lessThan": "899aa5638568abf5d69de7a7bb95e4615157375b"
            },
            {
              "version": "4aacf3d78424293e318c616016865380b37b9cc5",
              "status": "affected",
              "versionType": "git",
              "lessThan": "3fa13203b6d90cc3a33af47b058739f92ab82eef"
            },
            {
              "version": "2bf1435fa19d2c58054391b3bba40d5510a5758c",
              "status": "affected",
              "versionType": "git",
              "lessThan": "ec5caa765f7f6960011c919c9aeb1467940421f6"
            },
            {
              "version": "318cb24a4c3fce8140afaf84e4d45fcb76fb280b",
              "status": "affected",
              "versionType": "git",
              "lessThan": "a836be60a3aabcedcd9c79f545d409ace1f20ba6"
            },
            {
              "version": "c9e6978e2725a7d4b6cd23b2facd3f11422c0643",
              "status": "affected",
              "versionType": "git",
              "lessThan": "a337706c1fb35aac3f26b48aca80421bdbe1d33a"
            },
            {
              "version": "c9e6978e2725a7d4b6cd23b2facd3f11422c0643",
              "status": "affected",
              "versionType": "git",
              "lessThan": "61ae320a29b0540c16931816299eb86bf2b66c08"
            },
            {
              "version": "5.10.166",
              "status": "affected",
              "versionType": "semver",
              "lessThan": "5.10.181"
            },
            {
              "version": "5.15.91",
              "status": "affected",
              "versionType": "semver",
              "lessThan": "5.15.113"
            },
            {
              "version": "6.1.9",
              "status": "affected",
              "versionType": "semver",
              "lessThan": "6.1.30"
            }
          ]
        },
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "affected",
          "versions": [
            {
              "version": "6.2",
              "status": "affected"
            },
            {
              "version": "0",
              "status": "unaffected",
              "versionType": "semver",
              "lessThan": "6.2"
            },
            {
              "version": "5.10.181",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "5.10.*"
            },
            {
              "version": "5.15.113",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "5.15.*"
            },
            {
              "version": "6.1.30",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.1.*"
            },
            {
              "version": "6.3.4",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.3.*"
            },
            {
              "version": "6.4",
              "status": "unaffected",
              "versionType": "original_commit_for_fix",
              "lessThanOrEqual": "*"
            }
          ]
        }
      ]
    }
  }
}