{
  "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-2025-21648",
    "sourceURL": "https://www.cve.org/CVERecord?id=CVE-2025-21648",
    "idYear": 2025,
    "status": "PUBLISHED",
    "publishedAt": "2025-01-19T10:18:05.700Z",
    "updatedAt": "2026-10-15T01:02:48.320Z",
    "importedAt": "2026-10-24T01:57:29.455Z",
    "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: clamp maximum hashtable size to INT_MAX",
      "summary": "In the Linux kernel, the following vulnerability has been resolved:\n\nnetfilter: conntrack: clamp maximum hashtable size to INT_MAX\n\nUse INT_MAX as maximum size for the conntrack hashtable. Otherwise, it\nis possible to hit WARN_ON_ONCE in __kvmalloc_node_noprof() when\nresizing hashtable because __GFP_NOWARN is unset. See:\n\n  0708a0afe291 (\"mm: Consider __GFP_NOWARN flag for oversized kvmalloc() calls\")\n\nNote: hashtable resize is only possible from init_netns.",
      "affected": [
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "9cc1c73ad66610bffc80b691136ffc1e9a3b1a58",
              "status": "affected",
              "versionType": "git",
              "lessThan": "a965f7f0ea3ae61b9165bed619d5d6da02c75f80"
            },
            {
              "version": "9cc1c73ad66610bffc80b691136ffc1e9a3b1a58",
              "status": "affected",
              "versionType": "git",
              "lessThan": "b1b2353d768f1b80cd7fe045a70adee576b9b338"
            },
            {
              "version": "9cc1c73ad66610bffc80b691136ffc1e9a3b1a58",
              "status": "affected",
              "versionType": "git",
              "lessThan": "5552b4fd44be3393b930434a7845d8d95a2a3c33"
            },
            {
              "version": "9cc1c73ad66610bffc80b691136ffc1e9a3b1a58",
              "status": "affected",
              "versionType": "git",
              "lessThan": "d5807dd1328bbc86e059c5de80d1bbee9d58ca3d"
            },
            {
              "version": "9cc1c73ad66610bffc80b691136ffc1e9a3b1a58",
              "status": "affected",
              "versionType": "git",
              "lessThan": "f559357d035877b9d0dcd273e0ff83e18e1d46aa"
            },
            {
              "version": "9cc1c73ad66610bffc80b691136ffc1e9a3b1a58",
              "status": "affected",
              "versionType": "git",
              "lessThan": "b541ba7d1f5a5b7b3e2e22dc9e40e18a7d6dbc13"
            }
          ]
        },
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "affected",
          "versions": [
            {
              "version": "4.7",
              "status": "affected"
            },
            {
              "version": "0",
              "status": "unaffected",
              "versionType": "semver",
              "lessThan": "4.7"
            },
            {
              "version": "5.10.234",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "5.10.*"
            },
            {
              "version": "5.15.177",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "5.15.*"
            },
            {
              "version": "6.1.125",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.1.*"
            },
            {
              "version": "6.6.72",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.6.*"
            },
            {
              "version": "6.12.10",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.12.*"
            },
            {
              "version": "6.13",
              "status": "unaffected",
              "versionType": "original_commit_for_fix",
              "lessThanOrEqual": "*"
            }
          ]
        }
      ]
    }
  }
}