{
  "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-2023-53619",
    "sourceURL": "https://www.cve.org/CVERecord?id=CVE-2023-53619",
    "idYear": 2023,
    "status": "PUBLISHED",
    "publishedAt": "2025-10-07T15:19:26.003Z",
    "updatedAt": "2026-10-15T21:41:31.970Z",
    "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: conntrack: Avoid nf_ct_helper_hash uses after free",
      "summary": "In the Linux kernel, the following vulnerability has been resolved:\n\nnetfilter: conntrack: Avoid nf_ct_helper_hash uses after free\n\nIf nf_conntrack_init_start() fails (for example due to a\nregister_nf_conntrack_bpf() failure), the nf_conntrack_helper_fini()\nclean-up path frees the nf_ct_helper_hash map.\n\nWhen built with NF_CONNTRACK=y, further netfilter modules (e.g:\nnetfilter_conntrack_ftp) can still be loaded and call\nnf_conntrack_helpers_register(), independently of whether nf_conntrack\ninitialized correctly. This accesses the nf_ct_helper_hash dangling\npointer and causes a uaf, possibly leading to random memory corruption.\n\nThis patch guards nf_conntrack_helper_register() from accessing a freed\nor uninitialized nf_ct_helper_hash pointer and fixes possible\nuses-after-free when loading a conntrack module.",
      "affected": [
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "12f7a505331e6b2754684b509f2ac8f0011ce644",
              "status": "affected",
              "versionType": "git",
              "lessThan": "4ee69c91cb8f9ca144bc0861969e5a1a3c6152a7"
            },
            {
              "version": "12f7a505331e6b2754684b509f2ac8f0011ce644",
              "status": "affected",
              "versionType": "git",
              "lessThan": "00716f25f9697d02a0d9bd622575c7c7321ba3d0"
            },
            {
              "version": "12f7a505331e6b2754684b509f2ac8f0011ce644",
              "status": "affected",
              "versionType": "git",
              "lessThan": "61c7a5256543ae7d24cd9d21853d514c8632e1e9"
            },
            {
              "version": "12f7a505331e6b2754684b509f2ac8f0011ce644",
              "status": "affected",
              "versionType": "git",
              "lessThan": "8289d422f5e484efe4a565fe18e862ecd621c175"
            },
            {
              "version": "12f7a505331e6b2754684b509f2ac8f0011ce644",
              "status": "affected",
              "versionType": "git",
              "lessThan": "6f03ce2f1abcb9f9d0511e3659ca6eb60e39f566"
            },
            {
              "version": "12f7a505331e6b2754684b509f2ac8f0011ce644",
              "status": "affected",
              "versionType": "git",
              "lessThan": "05561f822f27b9fa88fa5504ddec34bf38833034"
            },
            {
              "version": "12f7a505331e6b2754684b509f2ac8f0011ce644",
              "status": "affected",
              "versionType": "git",
              "lessThan": "fce5cc7cbd4b92f979bf02c9ec5fb69aaeba92d7"
            },
            {
              "version": "12f7a505331e6b2754684b509f2ac8f0011ce644",
              "status": "affected",
              "versionType": "git",
              "lessThan": "6eef7a2b933885a17679eb8ed0796ddf0ee5309b"
            }
          ]
        },
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "affected",
          "versions": [
            {
              "version": "3.6",
              "status": "affected"
            },
            {
              "version": "0",
              "status": "unaffected",
              "versionType": "semver",
              "lessThan": "3.6"
            },
            {
              "version": "4.14.322",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "4.14.*"
            },
            {
              "version": "4.19.291",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "4.19.*"
            },
            {
              "version": "5.4.251",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "5.4.*"
            },
            {
              "version": "5.10.188",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "5.10.*"
            },
            {
              "version": "5.15.121",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "5.15.*"
            },
            {
              "version": "6.1.39",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.1.*"
            },
            {
              "version": "6.4.4",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.4.*"
            },
            {
              "version": "6.5",
              "status": "unaffected",
              "versionType": "original_commit_for_fix",
              "lessThanOrEqual": "*"
            }
          ]
        }
      ]
    }
  }
}