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Medium

Security advisory

Type: advisorySources: OSVCVE: CVE-2021-41202

TensorFlow is an open source platform for machine learning. In affected versions while calculating the size of the output within the `tf.range` kernel, there is a conditional statement of type `int64 = condition ? int64 : double`. Due to C++ implicit conversion rules, both branches of the condition will be cast to `double` and the result would be truncated before the assignment. This result in overflows. The fix will be included in TensorFlow 2.7.0. We will also cherrypick this commit on TensorFlow 2.6.1, TensorFlow 2.5.2, and TensorFlow 2.4.4, as these are also affected and still in supported range.

Products
Not specified
Affected versions
Not specified
Fixed versions
Not specified
CVEs
CVE-2021-41202
Confirmed fixed CVEs
Not specified
Updated in this feed
31 Oct 2026, 11:56 UTC · Revision 1

Source evidence

CVE-2021-41202

core-osv · Original source

Published 5 Nov 2021, 22:15 UTC

TensorFlow is an open source platform for machine learning. In affected versions while calculating the size of the output within the `tf.range` kernel, there is a conditional statement of type `int64 = condition ? int64 : double`. Due to C++ implicit conversion rules, both branches of the condition will be cast to `double` and the result would be truncated before the assignment. This result in overflows. The fix will be included in TensorFlow 2.7.0. We will also cherrypick this commit on TensorFlow 2.6.1, TensorFlow 2.5.2, and TensorFlow 2.4.4, as these are also affected and still in supported range.

osv:CVE-2021-41202
Complete source record
{
  "id": "fe302c760114353dbd1961f9c2983ec0365d32a8daeec81f5a9a8ddac2251aeb",
  "url": "https://osv.dev/vulnerability/CVE-2021-41202",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "CVE-2021-41202",
    "summary": "TensorFlow is an open source platform for machine learning. In affected versions while calculating the size of the output within the `tf.range` kernel, there is a conditional statement of type `int64 = condition ? int64 : double`. Due to C++ implicit conversion rules, both branches of the condition will be cast to `double` and the result would be truncated before the assignment. This result in overflows. The fix will be included in TensorFlow 2.7.0. We will also cherrypick this commit on TensorFlow 2.6.1, TensorFlow 2.5.2, and TensorFlow 2.4.4, as these are also affected and still in supported range.",
    "evidence": "osv:CVE-2021-41202",
    "products": [],
    "severity": "medium",
    "structured": {
      "id": "CVE-2021-41202",
      "aliases": [
        "BIT-tensorflow-2021-41202",
        "CVE-2021-41202",
        "GHSA-xrqm-fpgr-6hhx",
        "PYSEC-2021-395",
        "PYSEC-2021-612",
        "PYSEC-2021-810"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/tensorflow/tensorflow",
              "type": "GIT",
              "events": [
                {
                  "introduced": "582c8d236cb079023657287c318ff26adb239002"
                },
                {
                  "fixed": "64918868e2154b06c7479347a59a4230f785e9fa"
                },
                {
                  "introduced": "a4dfb8d1a71385bd6d122e4f27f86dcebb96712d"
                },
                {
                  "fixed": "957590ea15cc03ee2e00fc61934647d54836676f"
                },
                {
                  "introduced": "919f693420e35d00c8d0a42100837ae3718f7927"
                },
                {
                  "fixed": "3aa40c3ce9d16eae296f086bc4ac4d62deb2affc"
                },
                {
                  "introduced": "ce35e5c3a8efdb8161c6a85c8fb9ffb5bbdc9ffd"
                },
                {
                  "last_affected": "ff68385595088304cf772086b9a259a65b007622"
                },
                {
                  "fixed": "1b0e0ec27e7895b9985076eab32445026ae5ca94"
                },
                {
                  "fixed": "6d94002a09711d297dbba90390d5482b76113899"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:google:tensorflow:*:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "2.4.0"
                      },
                      {
                        "fixed": "2.4.4"
                      }
                    ],
                    "source": "CPE_RANGE"
                  },
                  {
                    "cpe": "cpe:2.3:a:google:tensorflow:*:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "2.5.0"
                      },
                      {
                        "fixed": "2.5.2"
                      }
                    ],
                    "source": "CPE_RANGE"
                  },
                  {
                    "cpe": "cpe:2.3:a:google:tensorflow:*:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "2.6.0"
                      },
                      {
                        "fixed": "2.6.1"
                      }
                    ],
                    "source": "CPE_RANGE"
                  },
                  {
                    "cpe": "cpe:2.3:a:google:tensorflow:2.7.0:rc0:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "2.7.0-rc0"
                      },
                      {
                        "last_affected": "2.7.0-rc0"
                      }
                    ],
                    "source": "CPE_STRING"
                  },
                  {
                    "cpe": "cpe:2.3:a:google:tensorflow:2.7.0:rc1:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "2.7.0-rc1"
                      },
                      {
                        "last_affected": "2.7.0-rc1"
                      }
                    ],
                    "source": "CPE_STRING"
                  },
                  {
                    "range": [
                      {
                        "fixed": "1b0e0ec27e7895b9985076eab32445026ae5ca94"
                      }
                    ],
                    "source": "REFERENCES_COMMIT"
                  },
                  {
                    "range": [
                      {
                        "fixed": "6d94002a09711d297dbba90390d5482b76113899"
                      }
                    ],
                    "source": "REFERENCES_COMMIT"
                  }
                ]
              }
            }
          ],
          "versions": [
            "2.7.0-rc0",
            "2.7.0-rc1",
            "v2.7.0-rc1",
            "v2.4.3",
            "v2.6.0",
            "v2.5.1",
            "v2.7.0-rc0",
            "v2.4.2",
            "v2.5.0",
            "v2.4.1",
            "v2.4.0"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2021-41202.json"
          }
        }
      ],
      "modified": "2026-10-20T10:54:57.783862713Z",
      "provider": "osv",
      "references": [
        "https://github.com/tensorflow/tensorflow/security/advisories/GHSA-xrqm-fpgr-6hhx",
        "https://github.com/tensorflow/tensorflow/issues/46889",
        "https://github.com/tensorflow/tensorflow/issues/46912",
        "https://github.com/tensorflow/tensorflow/commit/1b0e0ec27e7895b9985076eab32445026ae5ca94",
        "https://github.com/tensorflow/tensorflow/commit/6d94002a09711d297dbba90390d5482b76113899"
      ],
      "provider_metadata": {}
    },
    "related_cves": [
      {
        "value": "CVE-2021-41202",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 386563,
  "published_at": "2021-11-05T22:15:08.323+00:00"
}