gsd-2021-47179
Vulnerability from gsd
Modified
2024-04-03 05:03
Details
In the Linux kernel, the following vulnerability has been resolved: NFSv4: Fix a NULL pointer dereference in pnfs_mark_matching_lsegs_return() Commit de144ff4234f changes _pnfs_return_layout() to call pnfs_mark_matching_lsegs_return() passing NULL as the struct pnfs_layout_range argument. Unfortunately, pnfs_mark_matching_lsegs_return() doesn't check if we have a value here before dereferencing it, causing an oops. I'm able to hit this crash consistently when running connectathon basic tests on NFS v4.1/v4.2 against Ontap.
Aliases


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{
  "gsd": {
    "metadata": {
      "exploitCode": "unknown",
      "remediation": "unknown",
      "reportConfidence": "confirmed",
      "type": "vulnerability"
    },
    "osvSchema": {
      "aliases": [
        "CVE-2021-47179"
      ],
      "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nNFSv4: Fix a NULL pointer dereference in pnfs_mark_matching_lsegs_return()\n\nCommit de144ff4234f changes _pnfs_return_layout() to call\npnfs_mark_matching_lsegs_return() passing NULL as the struct\npnfs_layout_range argument. Unfortunately,\npnfs_mark_matching_lsegs_return() doesn\u0027t check if we have a value here\nbefore dereferencing it, causing an oops.\n\nI\u0027m able to hit this crash consistently when running connectathon basic\ntests on NFS v4.1/v4.2 against Ontap.",
      "id": "GSD-2021-47179",
      "modified": "2024-04-03T05:03:55.006617Z",
      "schema_version": "1.4.0"
    }
  },
  "namespaces": {
    "cve.org": {
      "CVE_data_meta": {
        "ASSIGNER": "cve@kernel.org",
        "ID": "CVE-2021-47179",
        "STATE": "PUBLIC"
      },
      "affects": {
        "vendor": {
          "vendor_data": [
            {
              "product": {
                "product_data": [
                  {
                    "product_name": "Linux",
                    "version": {
                      "version_data": [
                        {
                          "version_affected": "\u003c",
                          "version_name": "80e34f4957ec",
                          "version_value": "4e1ba532dbc1"
                        },
                        {
                          "version_affected": "\u003c",
                          "version_name": "7b7b97746432",
                          "version_value": "42637ca25c7d"
                        },
                        {
                          "version_affected": "\u003c",
                          "version_name": "9ffa7967f937",
                          "version_value": "39785761fead"
                        },
                        {
                          "version_affected": "\u003c",
                          "version_name": "6be0e4b59314",
                          "version_value": "aba3c7795f51"
                        },
                        {
                          "version_affected": "\u003c",
                          "version_name": "2fafe7d5047f",
                          "version_value": "f9890652185b"
                        },
                        {
                          "version_affected": "\u003c",
                          "version_name": "7e65ea887d0c",
                          "version_value": "b090d110e666"
                        },
                        {
                          "version_affected": "\u003c",
                          "version_name": "de144ff4234f",
                          "version_value": "a421d218603f"
                        },
                        {
                          "version_affected": "\u003c",
                          "version_name": "4.9.269",
                          "version_value": "4.9.271"
                        },
                        {
                          "version_affected": "\u003c",
                          "version_name": "4.14.233",
                          "version_value": "4.14.235"
                        },
                        {
                          "version_affected": "\u003c",
                          "version_name": "4.19.191",
                          "version_value": "4.19.193"
                        },
                        {
                          "version_affected": "\u003c",
                          "version_name": "5.4.118",
                          "version_value": "5.4.124"
                        },
                        {
                          "version_affected": "\u003c",
                          "version_name": "5.10.36",
                          "version_value": "5.10.42"
                        },
                        {
                          "version_affected": "\u003c",
                          "version_name": "5.12.3",
                          "version_value": "5.12.9"
                        }
                      ]
                    }
                  }
                ]
              },
              "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\nNFSv4: Fix a NULL pointer dereference in pnfs_mark_matching_lsegs_return()\n\nCommit de144ff4234f changes _pnfs_return_layout() to call\npnfs_mark_matching_lsegs_return() passing NULL as the struct\npnfs_layout_range argument. Unfortunately,\npnfs_mark_matching_lsegs_return() doesn\u0027t check if we have a value here\nbefore dereferencing it, causing an oops.\n\nI\u0027m able to hit this crash consistently when running connectathon basic\ntests on NFS v4.1/v4.2 against Ontap."
          }
        ]
      },
      "generator": {
        "engine": "bippy-5f0117140d9a"
      },
      "problemtype": {
        "problemtype_data": [
          {
            "description": [
              {
                "lang": "eng",
                "value": "n/a"
              }
            ]
          }
        ]
      },
      "references": {
        "reference_data": [
          {
            "name": "https://git.kernel.org/stable/c/4e1ba532dbc1a0e19fc2458d74ab8d98680c4e42",
            "refsource": "MISC",
            "url": "https://git.kernel.org/stable/c/4e1ba532dbc1a0e19fc2458d74ab8d98680c4e42"
          },
          {
            "name": "https://git.kernel.org/stable/c/42637ca25c7d7b5a92804a679af5192e8c1a9f48",
            "refsource": "MISC",
            "url": "https://git.kernel.org/stable/c/42637ca25c7d7b5a92804a679af5192e8c1a9f48"
          },
          {
            "name": "https://git.kernel.org/stable/c/39785761feadf261bc5101372b0b0bbaf6a94494",
            "refsource": "MISC",
            "url": "https://git.kernel.org/stable/c/39785761feadf261bc5101372b0b0bbaf6a94494"
          },
          {
            "name": "https://git.kernel.org/stable/c/aba3c7795f51717ae316f3566442dee7cc3eeccb",
            "refsource": "MISC",
            "url": "https://git.kernel.org/stable/c/aba3c7795f51717ae316f3566442dee7cc3eeccb"
          },
          {
            "name": "https://git.kernel.org/stable/c/f9890652185b72b8de9ebeb4406037640b6e1b53",
            "refsource": "MISC",
            "url": "https://git.kernel.org/stable/c/f9890652185b72b8de9ebeb4406037640b6e1b53"
          },
          {
            "name": "https://git.kernel.org/stable/c/b090d110e66636bca473fd8b98d5c97b555a965a",
            "refsource": "MISC",
            "url": "https://git.kernel.org/stable/c/b090d110e66636bca473fd8b98d5c97b555a965a"
          },
          {
            "name": "https://git.kernel.org/stable/c/a421d218603ffa822a0b8045055c03eae394a7eb",
            "refsource": "MISC",
            "url": "https://git.kernel.org/stable/c/a421d218603ffa822a0b8045055c03eae394a7eb"
          }
        ]
      }
    },
    "nvd.nist.gov": {
      "cve": {
        "descriptions": [
          {
            "lang": "en",
            "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nNFSv4: Fix a NULL pointer dereference in pnfs_mark_matching_lsegs_return()\n\nCommit de144ff4234f changes _pnfs_return_layout() to call\npnfs_mark_matching_lsegs_return() passing NULL as the struct\npnfs_layout_range argument. Unfortunately,\npnfs_mark_matching_lsegs_return() doesn\u0027t check if we have a value here\nbefore dereferencing it, causing an oops.\n\nI\u0027m able to hit this crash consistently when running connectathon basic\ntests on NFS v4.1/v4.2 against Ontap."
          },
          {
            "lang": "es",
            "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: NFSv4: corrige una desreferencia de puntero NULL en pnfs_mark_matching_lsegs_return(). Confirme los cambios de144ff4234f _pnfs_return_layout() para llamar a pnfs_mark_matching_lsegs_return() pasando NULL como argumento de estructura pnfs_layout_range. Desafortunadamente, pnfs_mark_matching_lsegs_return() no verifica si tenemos un valor aqu\u00ed antes de eliminar la referencia a \u00e9l, lo que provoca un error. Puedo alcanzar este bloqueo de manera consistente cuando ejecuto pruebas b\u00e1sicas de Connectathon en NFS v4.1/v4.2 contra Ontap."
          }
        ],
        "id": "CVE-2021-47179",
        "lastModified": "2024-04-04T14:15:08.920",
        "metrics": {},
        "published": "2024-03-25T10:15:09.317",
        "references": [
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "url": "https://git.kernel.org/stable/c/39785761feadf261bc5101372b0b0bbaf6a94494"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "url": "https://git.kernel.org/stable/c/42637ca25c7d7b5a92804a679af5192e8c1a9f48"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "url": "https://git.kernel.org/stable/c/4e1ba532dbc1a0e19fc2458d74ab8d98680c4e42"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "url": "https://git.kernel.org/stable/c/a421d218603ffa822a0b8045055c03eae394a7eb"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "url": "https://git.kernel.org/stable/c/aba3c7795f51717ae316f3566442dee7cc3eeccb"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "url": "https://git.kernel.org/stable/c/b090d110e66636bca473fd8b98d5c97b555a965a"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "url": "https://git.kernel.org/stable/c/f9890652185b72b8de9ebeb4406037640b6e1b53"
          }
        ],
        "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "vulnStatus": "Awaiting Analysis"
      }
    }
  }
}


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