Vulnerability-Lookup

FKIE_CVE-2021-47152

Vulnerability from fkie_nvd - Published: 2024-03-25 09:15 - Updated: 2026-08-04 10:16

Severity

7.8 (High) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
5.5 (Medium) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Summary

In the Linux kernel, the following vulnerability has been resolved: mptcp: fix data stream corruption Maxim reported several issues when forcing a TCP transparent proxy to use the MPTCP protocol for the inbound connections. He also provided a clean reproducer. The problem boils down to 'mptcp_frag_can_collapse_to()' assuming that only MPTCP will use the given page_frag. If others - e.g. the plain TCP protocol - allocate page fragments, we can end-up re-using already allocated memory for mptcp_data_frag. Fix the issue ensuring that the to-be-expanded data fragment is located at the current page frag end. v1 -> v2: - added missing fixes tag (Mat)

References

URL	Tags
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/18e7f0580da15cac1e79d73683ada5a9e70980f8	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/29249eac5225429b898f278230a6ca2baa1ae154	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/3267a061096efc91eda52c2a0c61ba76e46e4b34	Patch
af854a3a-2127-422b-91ae-364da2661108	https://git.kernel.org/stable/c/18e7f0580da15cac1e79d73683ada5a9e70980f8	Patch
af854a3a-2127-422b-91ae-364da2661108	https://git.kernel.org/stable/c/29249eac5225429b898f278230a6ca2baa1ae154	Patch
af854a3a-2127-422b-91ae-364da2661108	https://git.kernel.org/stable/c/3267a061096efc91eda52c2a0c61ba76e46e4b34	Patch

Impacted products

Vendor	Product	Version
linux	linux_kernel	*
linux	linux_kernel	*
linux	linux_kernel	5.13
linux	linux_kernel	5.13
linux	linux_kernel	5.13

JSON

To clipboard

{
  "affected": [
    {
      "affectedData": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "net/mptcp/protocol.c"
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              "version": "5.7"
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              "version": "0",
              "versionType": "semver"
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              "version": "5.12.9",
              "versionType": "semver"
            },
            {
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              "status": "unaffected",
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              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
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  "configurations": [
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    }
  ],
  "id": "CVE-2021-47152",
  "lastModified": "2026-08-04T10:16:48.963",
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          "timestamp": "2024-09-10T15:54:51.146188Z",
          "version": "2.0.3"
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    },
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}

CVE-2021-47152 (GCVE-0-2021-47152)

Vulnerability from cvelistv5 – Published: 2024-03-25 09:07 – Updated: 2026-08-05 08:46

Title

mptcp: fix data stream corruption

Summary

Severity

7.8 (High)


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

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2024-09-10 15:54 UTC

Assigner

Linux mitre root

References

3 references

URL	Tags
https://git.kernel.org/stable/c/3267a061096efc91e…
https://git.kernel.org/stable/c/18e7f0580da15cac1…
https://git.kernel.org/stable/c/29249eac5225429b8…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: 18b683bff89d46ace55f12d00c0440d44d6160c4 , < 3267a061096efc91eda52c2a0c61ba76e46e4b34 (git) Affected: 18b683bff89d46ace55f12d00c0440d44d6160c4 , < 18e7f0580da15cac1e79d73683ada5a9e70980f8 (git) Affected: 18b683bff89d46ace55f12d00c0440d44d6160c4 , < 29249eac5225429b898f278230a6ca2baa1ae154 (git)
Linux	Linux	Affected: 5.7 Unaffected: 0 , < 5.7 (semver) Unaffected: 5.10.42 , ≤ 5.10.* (semver) Unaffected: 5.12.9 , ≤ 5.12.* (semver) Unaffected: 5.13 , ≤ * (original_commit_for_fix)

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2024-08-04T05:24:39.850Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
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            "url": "https://git.kernel.org/stable/c/29249eac5225429b898f278230a6ca2baa1ae154"
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        ],
        "title": "CVE Program Container"
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        "metrics": [
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                "id": "CVE-2021-47152",
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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.

Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.