{
  "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-2026-43025",
    "sourceURL": "https://www.cve.org/CVERecord?id=CVE-2026-43025",
    "idYear": 2026,
    "status": "PUBLISHED",
    "publishedAt": "2026-05-01T14:15:27.103Z",
    "updatedAt": "2026-10-19T19:06:10.067Z",
    "importedAt": "2026-10-24T01:58:08.712Z",
    "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: ctnetlink: ignore explicit helper on new expectations",
      "summary": "In the Linux kernel, the following vulnerability has been resolved:\n\nnetfilter: ctnetlink: ignore explicit helper on new expectations\n\nUse the existing master conntrack helper, anything else is not really\nsupported and it just makes validation more complicated, so just ignore\nwhat helper userspace suggests for this expectation.\n\nThis was uncovered when validating CTA_EXPECT_CLASS via different helper\nprovided by userspace than the existing master conntrack helper:\n\n  BUG: KASAN: slab-out-of-bounds in nf_ct_expect_related_report+0x2479/0x27c0\n  Read of size 4 at addr ffff8880043fe408 by task poc/102\n  Call Trace:\n   nf_ct_expect_related_report+0x2479/0x27c0\n   ctnetlink_create_expect+0x22b/0x3b0\n   ctnetlink_new_expect+0x4bd/0x5c0\n   nfnetlink_rcv_msg+0x67a/0x950\n   netlink_rcv_skb+0x120/0x350\n\nAllowing to read kernel memory bytes off the expectation boundary.\n\nCTA_EXPECT_HELP_NAME is still used to offer the helper name to userspace\nvia netlink dump.",
      "affected": [
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "bd0779370588386e4a67ba5d0b176cfded8e6a53",
              "status": "affected",
              "versionType": "git",
              "lessThan": "e135f8e8212cbed12a03ab8dec77fa1247139897"
            },
            {
              "version": "bd0779370588386e4a67ba5d0b176cfded8e6a53",
              "status": "affected",
              "versionType": "git",
              "lessThan": "2ea0f35f235f70c133ad61fe05ba013753b978c6"
            },
            {
              "version": "bd0779370588386e4a67ba5d0b176cfded8e6a53",
              "status": "affected",
              "versionType": "git",
              "lessThan": "0f6c33697ccfac6499d0b7a4dbdec5d3a3a566cd"
            },
            {
              "version": "bd0779370588386e4a67ba5d0b176cfded8e6a53",
              "status": "affected",
              "versionType": "git",
              "lessThan": "187b6ec5229ea93cb04c4f6d3b52efc80f513d0d"
            },
            {
              "version": "bd0779370588386e4a67ba5d0b176cfded8e6a53",
              "status": "affected",
              "versionType": "git",
              "lessThan": "21a04c31db4057deec85fcd6cc63d720b38819c3"
            },
            {
              "version": "bd0779370588386e4a67ba5d0b176cfded8e6a53",
              "status": "affected",
              "versionType": "git",
              "lessThan": "917b61fa2042f11e2af4c428e43f08199586633a"
            }
          ]
        },
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "affected",
          "versions": [
            {
              "version": "3.12",
              "status": "affected"
            },
            {
              "version": "0",
              "status": "unaffected",
              "versionType": "semver",
              "lessThan": "3.12"
            },
            {
              "version": "6.1.168",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.1.*"
            },
            {
              "version": "6.6.134",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.6.*"
            },
            {
              "version": "6.12.81",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.12.*"
            },
            {
              "version": "6.18.22",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.18.*"
            },
            {
              "version": "6.19.12",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.19.*"
            },
            {
              "version": "7.0",
              "status": "unaffected",
              "versionType": "original_commit_for_fix",
              "lessThanOrEqual": "*"
            }
          ]
        }
      ]
    }
  }
}