{
  "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-2026-74496",
    "sourceURL": "https://www.cve.org/CVERecord?id=CVE-2026-74496",
    "idYear": 2026,
    "status": "PUBLISHED",
    "publishedAt": "2026-08-15T12:27:23.854Z",
    "updatedAt": "2026-10-16T19:05:50.395Z",
    "importedAt": "2026-10-24T01:58:30.346Z",
    "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": "fou: Fix use-after-free in fou_create()",
      "summary": "In the Linux kernel, the following vulnerability has been resolved:\n\nfou: Fix use-after-free in fou_create()\n\nfou_create() publishes struct fou through sk_user_data before adding the\nnew FOU port to the per-netns list.  If fou_add_to_port_list() fails,\nthe error path frees fou while it is still reachable through\nsk_user_data.  A concurrent receive can then dereference the freed\nobject in fou_from_sock().\n\nThis ordering issue was previously noted in the linked discussion.\n\nThe failure is reachable when local port 0 is requested.  Each socket\nbinds to a different ephemeral port, but fou_cfg_cmp() compares the\nrequested port 0 and reports -EALREADY once an entry already exists.\n\nRelease the tunnel socket before freeing fou so sk_user_data is cleared\nfirst, and defer reclamation with kfree_rcu() to protect concurrent RCU\nreaders.  This matches the lifetime handling in fou_release().",
      "affected": [
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "23461551c00628c3f3fe9cf837bf53cf8f212b63",
              "status": "affected",
              "versionType": "git",
              "lessThan": "0ee628a58d83e571f36ec9f07624d6845e420c50"
            },
            {
              "version": "23461551c00628c3f3fe9cf837bf53cf8f212b63",
              "status": "affected",
              "versionType": "git",
              "lessThan": "a6fca682cfa2041e31aa72cc397c4a1406eb7468"
            },
            {
              "version": "23461551c00628c3f3fe9cf837bf53cf8f212b63",
              "status": "affected",
              "versionType": "git",
              "lessThan": "b3f9c3e60aa25453774f899d25b5e61dd0bec1d5"
            },
            {
              "version": "23461551c00628c3f3fe9cf837bf53cf8f212b63",
              "status": "affected",
              "versionType": "git",
              "lessThan": "99f4d3120b244f92e5df787152041296a2860cb5"
            },
            {
              "version": "23461551c00628c3f3fe9cf837bf53cf8f212b63",
              "status": "affected",
              "versionType": "git",
              "lessThan": "58835985c035a8333742f829ad7e0889a082f9d3"
            },
            {
              "version": "23461551c00628c3f3fe9cf837bf53cf8f212b63",
              "status": "affected",
              "versionType": "git",
              "lessThan": "9042867d4701728f0c6527215b11471759904d8f"
            },
            {
              "version": "23461551c00628c3f3fe9cf837bf53cf8f212b63",
              "status": "affected",
              "versionType": "git",
              "lessThan": "a28d8903bfe76089ea4bbdbff9976965f9ef8107"
            },
            {
              "version": "23461551c00628c3f3fe9cf837bf53cf8f212b63",
              "status": "affected",
              "versionType": "git",
              "lessThan": "b14361aca6350ff7907b0e9903c7b94dc7d5d4a0"
            }
          ]
        },
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "affected",
          "versions": [
            {
              "version": "3.18",
              "status": "affected"
            },
            {
              "version": "0",
              "status": "unaffected",
              "versionType": "semver",
              "lessThan": "3.18"
            },
            {
              "version": "5.10.271",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "5.10.*"
            },
            {
              "version": "5.15.222",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "5.15.*"
            },
            {
              "version": "6.1.189",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.1.*"
            },
            {
              "version": "6.6.158",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.6.*"
            },
            {
              "version": "6.12.111",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.12.*"
            },
            {
              "version": "6.18.53",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.18.*"
            },
            {
              "version": "7.1.8",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "7.1.*"
            },
            {
              "version": "7.2",
              "status": "unaffected",
              "versionType": "original_commit_for_fix",
              "lessThanOrEqual": "*"
            }
          ]
        }
      ]
    }
  }
}