Security advisory

{
  "id": "ac5ce8fcc05d4ef897992c78902e696285719ea7d5a04ca69f03238984ab00dd",
  "url": "https://osv.dev/vulnerability/CVE-2020-15198",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "CVE-2020-15198",
    "summary": "In Tensorflow before version 2.3.1, the `SparseCountSparseOutput` implementation does not validate that the input arguments form a valid sparse tensor. In particular, there is no validation that the `indices` tensor has the same shape as the `values` one. The values in these tensors are always accessed in parallel. Thus, a shape mismatch can result in accesses outside the bounds of heap allocated buffers. The issue is patched in commit 3cbb917b4714766030b28eba9fb41bb97ce9ee02 and is released in TensorFlow version 2.3.1.",
    "evidence": "osv:CVE-2020-15198",
    "products": [],
    "severity": "medium",
    "structured": {
      "id": "CVE-2020-15198",
      "aliases": [
        "BIT-tensorflow-2020-15198",
        "CVE-2020-15198",
        "GHSA-jc87-6vpp-7ff3",
        "PYSEC-2020-121",
        "PYSEC-2020-278",
        "PYSEC-2020-313"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:L/I:L/A:N"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/tensorflow/tensorflow",
              "type": "GIT",
              "events": [
                {
                  "introduced": "b36436b087bd8e8701ef51718179037cccdfc26e"
                },
                {
                  "fixed": "fcc4b966f1265f466e82617020af93670141b009"
                },
                {
                  "fixed": "3cbb917b4714766030b28eba9fb41bb97ce9ee02"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:google:tensorflow:*:*:*:*:-:*:*:*",
                    "range": [
                      {
                        "introduced": "2.3.0"
                      },
                      {
                        "fixed": "2.3.1"
                      }
                    ],
                    "source": "CPE_RANGE"
                  },
                  {
                    "range": [
                      {
                        "fixed": "3cbb917b4714766030b28eba9fb41bb97ce9ee02"
                      }
                    ],
                    "source": "REFERENCES_COMMIT"
                  },
                  {
                    "range": [
                      {
                        "fixed": "fcc4b966f1265f466e82617020af93670141b009"
                      }
                    ],
                    "source": "REFERENCES_TAG",
                    "original_tag": "v2.3.1"
                  }
                ]
              }
            }
          ],
          "versions": [
            "v2.3.0"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2020-15198.json",
            "vanir_signatures": [
              {
                "id": "CVE-2020-15198-9a90de26",
                "digest": {
                  "threshold": 0.9,
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                },
                "source": "https://github.com/tensorflow/tensorflow/commit/3cbb917b4714766030b28eba9fb41bb97ce9ee02",
                "target": {
                  "file": "tensorflow/core/kernels/count_ops.cc"
                },
                "deprecated": false,
                "signature_type": "Line",
                "signature_version": "v1"
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            ],
            "vanir_signatures_modified": "2026-10-20T14:10:31Z"
          }
        }
      ],
      "modified": "2026-10-20T14:10:31.875869566Z",
      "provider": "osv",
      "references": [
        "https://github.com/tensorflow/tensorflow/releases/tag/v2.3.1",
        "https://github.com/tensorflow/tensorflow/commit/3cbb917b4714766030b28eba9fb41bb97ce9ee02",
        "https://github.com/tensorflow/tensorflow/security/advisories/GHSA-jc87-6vpp-7ff3"
      ],
      "provider_metadata": {}
    },
    "related_cves": [
      {
        "value": "CVE-2020-15198",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 388621,
  "published_at": "2020-09-25T19:15:15.057+00:00"
}