gsd-2021-47152
Vulnerability from gsd
Modified
2024-03-05 06:03
Details
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)
Aliases


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{
  "gsd": {
    "metadata": {
      "exploitCode": "unknown",
      "remediation": "unknown",
      "reportConfidence": "confirmed",
      "type": "vulnerability"
    },
    "osvSchema": {
      "aliases": [
        "CVE-2021-47152"
      ],
      "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nmptcp: fix data stream corruption\n\nMaxim reported several issues when forcing a TCP transparent proxy\nto use the MPTCP protocol for the inbound connections. He also\nprovided a clean reproducer.\n\nThe problem boils down to \u0027mptcp_frag_can_collapse_to()\u0027 assuming\nthat only MPTCP will use the given page_frag.\n\nIf others - e.g. the plain TCP protocol - allocate page fragments,\nwe can end-up re-using already allocated memory for mptcp_data_frag.\n\nFix the issue ensuring that the to-be-expanded data fragment is\nlocated at the current page frag end.\n\nv1 -\u003e v2:\n - added missing fixes tag (Mat)",
      "id": "GSD-2021-47152",
      "modified": "2024-03-05T06:03:55.191402Z",
      "schema_version": "1.4.0"
    }
  },
  "namespaces": {
    "cve.org": {
      "CVE_data_meta": {
        "ASSIGNER": "cve@kernel.org",
        "ID": "CVE-2021-47152",
        "STATE": "PUBLIC"
      },
      "affects": {
        "vendor": {
          "vendor_data": [
            {
              "product": {
                "product_data": [
                  {
                    "product_name": "Linux",
                    "version": {
                      "version_data": [
                        {
                          "version_affected": "\u003c",
                          "version_name": "18b683bff89d",
                          "version_value": "3267a061096e"
                        },
                        {
                          "version_value": "not down converted",
                          "x_cve_json_5_version_data": {
                            "defaultStatus": "affected",
                            "versions": [
                              {
                                "status": "affected",
                                "version": "5.7"
                              },
                              {
                                "lessThan": "5.7",
                                "status": "unaffected",
                                "version": "0",
                                "versionType": "custom"
                              },
                              {
                                "lessThanOrEqual": "5.10.*",
                                "status": "unaffected",
                                "version": "5.10.42",
                                "versionType": "custom"
                              },
                              {
                                "lessThanOrEqual": "5.12.*",
                                "status": "unaffected",
                                "version": "5.12.9",
                                "versionType": "custom"
                              },
                              {
                                "lessThanOrEqual": "*",
                                "status": "unaffected",
                                "version": "5.13",
                                "versionType": "original_commit_for_fix"
                              }
                            ]
                          }
                        }
                      ]
                    }
                  }
                ]
              },
              "vendor_name": "Linux"
            }
          ]
        }
      },
      "data_format": "MITRE",
      "data_type": "CVE",
      "data_version": "4.0",
      "description": {
        "description_data": [
          {
            "lang": "eng",
            "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nmptcp: fix data stream corruption\n\nMaxim reported several issues when forcing a TCP transparent proxy\nto use the MPTCP protocol for the inbound connections. He also\nprovided a clean reproducer.\n\nThe problem boils down to \u0027mptcp_frag_can_collapse_to()\u0027 assuming\nthat only MPTCP will use the given page_frag.\n\nIf others - e.g. the plain TCP protocol - allocate page fragments,\nwe can end-up re-using already allocated memory for mptcp_data_frag.\n\nFix the issue ensuring that the to-be-expanded data fragment is\nlocated at the current page frag end.\n\nv1 -\u003e v2:\n - added missing fixes tag (Mat)"
          }
        ]
      },
      "generator": {
        "engine": "bippy-b4257b672505"
      },
      "problemtype": {
        "problemtype_data": [
          {
            "description": [
              {
                "lang": "eng",
                "value": "n/a"
              }
            ]
          }
        ]
      },
      "references": {
        "reference_data": [
          {
            "name": "https://git.kernel.org/stable/c/3267a061096efc91eda52c2a0c61ba76e46e4b34",
            "refsource": "MISC",
            "url": "https://git.kernel.org/stable/c/3267a061096efc91eda52c2a0c61ba76e46e4b34"
          },
          {
            "name": "https://git.kernel.org/stable/c/18e7f0580da15cac1e79d73683ada5a9e70980f8",
            "refsource": "MISC",
            "url": "https://git.kernel.org/stable/c/18e7f0580da15cac1e79d73683ada5a9e70980f8"
          },
          {
            "name": "https://git.kernel.org/stable/c/29249eac5225429b898f278230a6ca2baa1ae154",
            "refsource": "MISC",
            "url": "https://git.kernel.org/stable/c/29249eac5225429b898f278230a6ca2baa1ae154"
          }
        ]
      }
    },
    "nvd.nist.gov": {
      "cve": {
        "descriptions": [
          {
            "lang": "en",
            "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nmptcp: fix data stream corruption\n\nMaxim reported several issues when forcing a TCP transparent proxy\nto use the MPTCP protocol for the inbound connections. He also\nprovided a clean reproducer.\n\nThe problem boils down to \u0027mptcp_frag_can_collapse_to()\u0027 assuming\nthat only MPTCP will use the given page_frag.\n\nIf others - e.g. the plain TCP protocol - allocate page fragments,\nwe can end-up re-using already allocated memory for mptcp_data_frag.\n\nFix the issue ensuring that the to-be-expanded data fragment is\nlocated at the current page frag end.\n\nv1 -\u003e v2:\n - added missing fixes tag (Mat)"
          },
          {
            "lang": "es",
            "value": "En el kernel de Linux, se resolvi\u00f3 la siguiente vulnerabilidad: mptcp: corrige la corrupci\u00f3n del flujo de datos Maxim inform\u00f3 varios problemas al forzar a un proxy transparente TCP a utilizar el protocolo MPTCP para las conexiones entrantes. Tambi\u00e9n proporcion\u00f3 un reproductor limpio. El problema se reduce a \u0027mptcp_frag_can_collapse_to()\u0027 suponiendo que s\u00f3lo MPTCP utilizar\u00e1 el page_frag dado. Si otros (por ejemplo, el protocolo TCP simple) asignan fragmentos de p\u00e1gina, podemos terminar reutilizando la memoria ya asignada para mptcp_data_frag. Solucione el problema asegur\u00e1ndose de que el fragmento de datos que se va a expandir est\u00e9 ubicado al final del fragmento de la p\u00e1gina actual. v1 -\u0026gt; v2: - se agreg\u00f3 la etiqueta de correcciones faltantes (Mat)"
          }
        ],
        "id": "CVE-2021-47152",
        "lastModified": "2024-03-25T13:47:14.087",
        "metrics": {},
        "published": "2024-03-25T09:15:09.357",
        "references": [
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "url": "https://git.kernel.org/stable/c/18e7f0580da15cac1e79d73683ada5a9e70980f8"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "url": "https://git.kernel.org/stable/c/29249eac5225429b898f278230a6ca2baa1ae154"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "url": "https://git.kernel.org/stable/c/3267a061096efc91eda52c2a0c61ba76e46e4b34"
          }
        ],
        "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "vulnStatus": "Awaiting Analysis"
      }
    }
  }
}


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