Vulnerability-Lookup

GHSA-MFW6-959V-265J

Vulnerability from github – Published: 2024-09-11 18:31 – Updated: 2025-11-04 00:31

Details

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

mptcp: pm: only mark 'subflow' endp as available

Adding the following warning ...

WARN_ON_ONCE(msk->pm.local_addr_used == 0)

... before decrementing the local_addr_used counter helped to find a bug when running the "remove single address" subtest from the mptcp_join.sh selftests.

Removing a 'signal' endpoint will trigger the removal of all subflows linked to this endpoint via mptcp_pm_nl_rm_addr_or_subflow() with rm_type == MPTCP_MIB_RMSUBFLOW. This will decrement the local_addr_used counter, which is wrong in this case because this counter is linked to 'subflow' endpoints, and here it is a 'signal' endpoint that is being removed.

Now, the counter is decremented, only if the ID is being used outside of mptcp_pm_nl_rm_addr_or_subflow(), only for 'subflow' endpoints, and if the ID is not 0 -- local_addr_used is not taking into account these ones. This marking of the ID as being available, and the decrement is done no matter if a subflow using this ID is currently available, because the subflow could have been closed before.

Severity

5.5 (Medium)


                  
                    CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

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{
  "affected": [],
  "aliases": [
    "CVE-2024-45010"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2024-09-11T16:15:06Z",
    "severity": "MODERATE"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nmptcp: pm: only mark \u0027subflow\u0027 endp as available\n\nAdding the following warning ...\n\n  WARN_ON_ONCE(msk-\u003epm.local_addr_used == 0)\n\n... before decrementing the local_addr_used counter helped to find a bug\nwhen running the \"remove single address\" subtest from the mptcp_join.sh\nselftests.\n\nRemoving a \u0027signal\u0027 endpoint will trigger the removal of all subflows\nlinked to this endpoint via mptcp_pm_nl_rm_addr_or_subflow() with\nrm_type == MPTCP_MIB_RMSUBFLOW. This will decrement the local_addr_used\ncounter, which is wrong in this case because this counter is linked to\n\u0027subflow\u0027 endpoints, and here it is a \u0027signal\u0027 endpoint that is being\nremoved.\n\nNow, the counter is decremented, only if the ID is being used outside\nof mptcp_pm_nl_rm_addr_or_subflow(), only for \u0027subflow\u0027 endpoints, and\nif the ID is not 0 -- local_addr_used is not taking into account these\nones. This marking of the ID as being available, and the decrement is\ndone no matter if a subflow using this ID is currently available,\nbecause the subflow could have been closed before.",
  "id": "GHSA-mfw6-959v-265j",
  "modified": "2025-11-04T00:31:23Z",
  "published": "2024-09-11T18:31:05Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2024-45010"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/322ea3778965da72862cca2a0c50253aacf65fe6"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/43cf912b0b0fc7b4fd12cbc735d1f5afb8e1322d"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/7fdc870d08960961408a44c569f20f50940e7d4f"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/9849cfc67383ceb167155186f8f8fe8a896b60b3"
    },
    {
      "type": "WEB",
      "url": "https://lists.debian.org/debian-lts-announce/2025/01/msg00001.html"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ]
}

CVE-2024-45010 (GCVE-0-2024-45010)

Vulnerability from cvelistv5 – Published: 2024-09-11 15:13 – Updated: 2026-05-11 20:33

Title

mptcp: pm: only mark 'subflow' endp as available

Summary

In the Linux kernel, the following vulnerability has been resolved: mptcp: pm: only mark 'subflow' endp as available Adding the following warning ... WARN_ON_ONCE(msk->pm.local_addr_used == 0) ... before decrementing the local_addr_used counter helped to find a bug when running the "remove single address" subtest from the mptcp_join.sh selftests. Removing a 'signal' endpoint will trigger the removal of all subflows linked to this endpoint via mptcp_pm_nl_rm_addr_or_subflow() with rm_type == MPTCP_MIB_RMSUBFLOW. This will decrement the local_addr_used counter, which is wrong in this case because this counter is linked to 'subflow' endpoints, and here it is a 'signal' endpoint that is being removed. Now, the counter is decremented, only if the ID is being used outside of mptcp_pm_nl_rm_addr_or_subflow(), only for 'subflow' endpoints, and if the ID is not 0 -- local_addr_used is not taking into account these ones. This marking of the ID as being available, and the decrement is done no matter if a subflow using this ID is currently available, because the subflow could have been closed before.

Severity

No CVSS data available.

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2024-09-29 15:50 UTC

Assigner

Linux mitre root

References

5 references

URL	Tags
https://git.kernel.org/stable/c/7fdc870d089609614…
https://git.kernel.org/stable/c/43cf912b0b0fc7b4f…
https://git.kernel.org/stable/c/9849cfc67383ceb16…
https://git.kernel.org/stable/c/322ea3778965da728…
https://lists.debian.org/debian-lts-announce/2025…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: 06faa22710342bca5e9c249634199c650799fce6 , < 7fdc870d08960961408a44c569f20f50940e7d4f (git) Affected: 06faa22710342bca5e9c249634199c650799fce6 , < 43cf912b0b0fc7b4fd12cbc735d1f5afb8e1322d (git) Affected: 06faa22710342bca5e9c249634199c650799fce6 , < 9849cfc67383ceb167155186f8f8fe8a896b60b3 (git) Affected: 06faa22710342bca5e9c249634199c650799fce6 , < 322ea3778965da72862cca2a0c50253aacf65fe6 (git)
Linux	Linux	Affected: 5.13 Unaffected: 0 , < 5.13 (semver) Unaffected: 6.1.108 , ≤ 6.1.* (semver) Unaffected: 6.6.48 , ≤ 6.6.* (semver) Unaffected: 6.10.7 , ≤ 6.10.* (semver) Unaffected: 6.11 , ≤ * (original_commit_for_fix)

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Sightings

Author	Source	Type	Date	Other

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.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

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