github - ghsa-h9hh-vjgw-q6wq

GHSA-H9HH-VJGW-Q6WQ

Vulnerability from github – Published: 2025-08-16 12:30 – Updated: 2025-11-03 18:31

Details

In the Linux kernel, the following vulnerability has been resolved:

mptcp: plug races between subflow fail and subflow creation

We have races similar to the one addressed by the previous patch between subflow failing and additional subflow creation. They are just harder to trigger.

The solution is similar. Use a separate flag to track the condition 'socket state prevent any additional subflow creation' protected by the fallback lock.

The socket fallback makes such flag true, and also receiving or sending an MP_FAIL option.

The field 'allow_infinite_fallback' is now always touched under the relevant lock, we can drop the ONCE annotation on write.

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{
  "affected": [],
  "aliases": [
    "CVE-2025-38552"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2025-08-16T12:15:31Z",
    "severity": null
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nmptcp: plug races between subflow fail and subflow creation\n\nWe have races similar to the one addressed by the previous patch between\nsubflow failing and additional subflow creation. They are just harder to\ntrigger.\n\nThe solution is similar. Use a separate flag to track the condition\n\u0027socket state prevent any additional subflow creation\u0027 protected by the\nfallback lock.\n\nThe socket fallback makes such flag true, and also receiving or sending\nan MP_FAIL option.\n\nThe field \u0027allow_infinite_fallback\u0027 is now always touched under the\nrelevant lock, we can drop the ONCE annotation on write.",
  "id": "GHSA-h9hh-vjgw-q6wq",
  "modified": "2025-11-03T18:31:33Z",
  "published": "2025-08-16T12:30:33Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-38552"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/659da22dee5ff316ba63bdaeeac7b58b5442f6c2"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/7c96d519ee15a130842a6513530b4d20acd2bfcd"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/c476d627584b7589a134a8b48dd5c6639e4401c5"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/def5b7b2643ebba696fc60ddf675dca13f073486"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/f81b6fbe13c7fc413b5158cdffc6a59391a2a8db"
    },
    {
      "type": "WEB",
      "url": "https://lists.debian.org/debian-lts-announce/2025/10/msg00008.html"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}

CVE-2025-38552 (GCVE-0-2025-38552)

Vulnerability from cvelistv5 – Published: 2025-08-16 11:34 – Updated: 2025-11-03 17:39

Summary

In the Linux kernel, the following vulnerability has been resolved: mptcp: plug races between subflow fail and subflow creation We have races similar to the one addressed by the previous patch between subflow failing and additional subflow creation. They are just harder to trigger. The solution is similar. Use a separate flag to track the condition 'socket state prevent any additional subflow creation' protected by the fallback lock. The socket fallback makes such flag true, and also receiving or sending an MP_FAIL option. The field 'allow_infinite_fallback' is now always touched under the relevant lock, we can drop the ONCE annotation on write.

Severity ?

No CVSS data available.

Assigner

Linux

References

URL

Tags

	https://git.kernel.org/stable/c/c476d627584b7589a…
	https://git.kernel.org/stable/c/7c96d519ee15a1308…
	https://git.kernel.org/stable/c/f81b6fbe13c7fc413…
	https://git.kernel.org/stable/c/659da22dee5ff316b…
	https://git.kernel.org/stable/c/def5b7b2643ebba69…

Impacted products

Vendor

Product

Version

Linux

Affected: 478d770008b03ed9d74bdc8add2315b7fd124ecc , < c476d627584b7589a134a8b48dd5c6639e4401c5 (git)
Affected: 478d770008b03ed9d74bdc8add2315b7fd124ecc , < 7c96d519ee15a130842a6513530b4d20acd2bfcd (git)
Affected: 478d770008b03ed9d74bdc8add2315b7fd124ecc , < f81b6fbe13c7fc413b5158cdffc6a59391a2a8db (git)
Affected: 478d770008b03ed9d74bdc8add2315b7fd124ecc , < 659da22dee5ff316ba63bdaeeac7b58b5442f6c2 (git)
Affected: 478d770008b03ed9d74bdc8add2315b7fd124ecc , < def5b7b2643ebba696fc60ddf675dca13f073486 (git)

Linux

Affected: 5.15
Unaffected: 0 , < 5.15 (semver)
Unaffected: 6.1.149 , ≤ 6.1.* (semver)
Unaffected: 6.6.101 , ≤ 6.6.* (semver)
Unaffected: 6.12.40 , ≤ 6.12.* (semver)
Unaffected: 6.15.8 , ≤ 6.15.* (semver)
Unaffected: 6.16 , ≤ * (original_commit_for_fix)

Show details on NVD website

JSON

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Sightings

Author	Source	Type	Date

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Detection rules are retrieved from Rulezet.

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GHSA-H9HH-VJGW-Q6WQ

CVE-2025-38552 (GCVE-0-2025-38552)

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Nomenclature