{
  "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-2026-63828",
    "sourceURL": "https://www.cve.org/CVERecord?id=CVE-2026-63828",
    "idYear": 2026,
    "status": "PUBLISHED",
    "publishedAt": "2026-07-19T12:02:22.644Z",
    "updatedAt": "2026-08-17T04:51:36.839Z",
    "importedAt": "2026-10-24T01:58:20.586Z",
    "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": "apparmor: mediate the implicit connect of TCP fast open sendmsg",
      "summary": "In the Linux kernel, the following vulnerability has been resolved:\n\napparmor: mediate the implicit connect of TCP fast open sendmsg\n\nsendmsg()/sendto() with MSG_FASTOPEN is a combination of connect(2) and\nwrite(2): it opens the connection in the SYN. apparmor_socket_sendmsg()\nonly checks AA_MAY_SEND, so a profile that grants send but denies connect\nlets a confined task open an outbound TCP/MPTCP connection that connect(2)\nwould have refused, bypassing connect mediation.\n\nMediate the implicit connect when MSG_FASTOPEN is set and a destination\nis supplied. Add it to apparmor_socket_sendmsg() (not the shared\naa_sock_msg_perm() helper, which recvmsg also uses) and call aa_sk_perm()\ndirectly, mirroring the selinux and tomoyo fixes. sk_is_tcp() does not\ncover MPTCP fast open, so the SOCK_STREAM/IPPROTO_MPTCP arm is explicit.",
      "affected": [
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "cf60af03ca4e71134206809ea892e49b92a88896",
              "status": "affected",
              "versionType": "git",
              "lessThan": "a16714e7cf2baa98ba2efddd5d6cbac641f4e76b"
            },
            {
              "version": "cf60af03ca4e71134206809ea892e49b92a88896",
              "status": "affected",
              "versionType": "git",
              "lessThan": "20383429b56974507c465d016e5238b189f7a246"
            },
            {
              "version": "cf60af03ca4e71134206809ea892e49b92a88896",
              "status": "affected",
              "versionType": "git",
              "lessThan": "7f57428ce00891d26b0f087ef754a4d820ec83aa"
            },
            {
              "version": "cf60af03ca4e71134206809ea892e49b92a88896",
              "status": "affected",
              "versionType": "git",
              "lessThan": "faea60deaa05c76f0772650f42eafde12bd39d93"
            },
            {
              "version": "cf60af03ca4e71134206809ea892e49b92a88896",
              "status": "affected",
              "versionType": "git",
              "lessThan": "07b71c342382b854ab8030b244aeab6a7228ad7d"
            },
            {
              "version": "cf60af03ca4e71134206809ea892e49b92a88896",
              "status": "affected",
              "versionType": "git",
              "lessThan": "4a69b83045d3195d5b9a9b053ad840ddb2998b4e"
            },
            {
              "version": "cf60af03ca4e71134206809ea892e49b92a88896",
              "status": "affected",
              "versionType": "git",
              "lessThan": "45ebb934ea50b436ce49b2f159f090dab0d7fa28"
            },
            {
              "version": "cf60af03ca4e71134206809ea892e49b92a88896",
              "status": "affected",
              "versionType": "git",
              "lessThan": "4d587cd8a72155089a627130bbd4716ec0856e21"
            }
          ]
        },
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "affected",
          "versions": [
            {
              "version": "3.6",
              "status": "affected"
            },
            {
              "version": "0",
              "status": "unaffected",
              "versionType": "semver",
              "lessThan": "3.6"
            },
            {
              "version": "5.10.261",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "5.10.*"
            },
            {
              "version": "5.15.212",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "5.15.*"
            },
            {
              "version": "6.1.177",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.1.*"
            },
            {
              "version": "6.6.144",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.6.*"
            },
            {
              "version": "6.12.95",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.12.*"
            },
            {
              "version": "6.18.38",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.18.*"
            },
            {
              "version": "7.1.3",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "7.1.*"
            },
            {
              "version": "7.2",
              "status": "unaffected",
              "versionType": "original_commit_for_fix",
              "lessThanOrEqual": "*"
            }
          ]
        }
      ]
    }
  }
}