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CVE-2025-38552 mptcp: plug races between subflow fail and subflow creation

🗓️ 16 Aug 2025 11:34:20Reported by LinuxType 
cvelist
 cvelist
🔗 www.cve.org👁 8 Views

CVE-2025-38552: fix race between subflow fail and creation in mptcp; add guarded flag under fallback lock; MP_FAIL handling; lock allow_infinite_fallback; drop ONCE write annotation.

Related
Affected
Refs
[
  {
    "product": "Linux",
    "vendor": "Linux",
    "defaultStatus": "unaffected",
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "programFiles": [
      "net/mptcp/pm.c",
      "net/mptcp/protocol.c",
      "net/mptcp/protocol.h",
      "net/mptcp/subflow.c"
    ],
    "versions": [
      {
        "version": "478d770008b03ed9d74bdc8add2315b7fd124ecc",
        "lessThan": "c476d627584b7589a134a8b48dd5c6639e4401c5",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "478d770008b03ed9d74bdc8add2315b7fd124ecc",
        "lessThan": "7c96d519ee15a130842a6513530b4d20acd2bfcd",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "478d770008b03ed9d74bdc8add2315b7fd124ecc",
        "lessThan": "f81b6fbe13c7fc413b5158cdffc6a59391a2a8db",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "478d770008b03ed9d74bdc8add2315b7fd124ecc",
        "lessThan": "659da22dee5ff316ba63bdaeeac7b58b5442f6c2",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "478d770008b03ed9d74bdc8add2315b7fd124ecc",
        "lessThan": "def5b7b2643ebba696fc60ddf675dca13f073486",
        "status": "affected",
        "versionType": "git"
      }
    ]
  },
  {
    "product": "Linux",
    "vendor": "Linux",
    "defaultStatus": "affected",
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "programFiles": [
      "net/mptcp/pm.c",
      "net/mptcp/protocol.c",
      "net/mptcp/protocol.h",
      "net/mptcp/subflow.c"
    ],
    "versions": [
      {
        "version": "5.15",
        "status": "affected"
      },
      {
        "version": "0",
        "lessThan": "5.15",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.1.149",
        "lessThanOrEqual": "6.1.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.6.101",
        "lessThanOrEqual": "6.6.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.12.40",
        "lessThanOrEqual": "6.12.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.15.8",
        "lessThanOrEqual": "6.15.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.16",
        "lessThanOrEqual": "*",
        "status": "unaffected",
        "versionType": "original_commit_for_fix"
      }
    ]
  }
]

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