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CVE-2026-72243 selinux: check connect-related permissions on TCP Fast Open

🗓️ 15 Aug 2026 05:54:31Reported by LinuxType 
cvelist
 cvelist
🔗 www.cve.org👁 24 Views

SELinux skips connect permission checks when TCP Fast Open (MSG_FASTOPEN) is used in socket_sendmsg().

Related
Affected
Refs
[
  {
    "product": "Linux",
    "vendor": "Linux",
    "defaultStatus": "unaffected",
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "programFiles": [
      "security/selinux/hooks.c"
    ],
    "versions": [
      {
        "version": "cf60af03ca4e71134206809ea892e49b92a88896",
        "lessThan": "11406d0d7e11b4e525bb2ace2c70107031d058da",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "cf60af03ca4e71134206809ea892e49b92a88896",
        "lessThan": "e507633bf76bccf1a6af27771fb0d6e2862b7eac",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "cf60af03ca4e71134206809ea892e49b92a88896",
        "lessThan": "d028bc080a0dcd6a7f8e1ae1bd32dda696505ba3",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "cf60af03ca4e71134206809ea892e49b92a88896",
        "lessThan": "fc633a598206d4f23af782db7c0b5f3a82751d2c",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "cf60af03ca4e71134206809ea892e49b92a88896",
        "lessThan": "646ebbc5f2ff9147d084e1213143f091026a611c",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "cf60af03ca4e71134206809ea892e49b92a88896",
        "lessThan": "44c74d27d1b9aaa99fa8a83640c1223575262b80",
        "status": "affected",
        "versionType": "git"
      }
    ]
  },
  {
    "product": "Linux",
    "vendor": "Linux",
    "defaultStatus": "affected",
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "programFiles": [
      "security/selinux/hooks.c"
    ],
    "versions": [
      {
        "version": "3.6",
        "status": "affected"
      },
      {
        "version": "0",
        "lessThan": "3.6",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.1.178",
        "lessThanOrEqual": "6.1.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.6.145",
        "lessThanOrEqual": "6.6.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.12.97",
        "lessThanOrEqual": "6.12.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.18.40",
        "lessThanOrEqual": "6.18.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "7.1.5",
        "lessThanOrEqual": "7.1.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "7.2",
        "lessThanOrEqual": "*",
        "status": "unaffected",
        "versionType": "original_commit_for_fix"
      }
    ]
  }
]

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18 Aug 2026 06:56Current
CVSS 3.18.4
EPSS0.00161
24