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Security advisory

Type: advisorySources: OSVCVE: CVE-2021-29527

TensorFlow is an end-to-end open source platform for machine learning. An attacker can trigger a division by 0 in `tf.raw_ops.QuantizedConv2D`. This is because the implementation(https://github.com/tensorflow/tensorflow/blob/00e9a4d67d76703fa1aee33dac582acf317e0e81/tensorflow/core/kernels/quantized_conv_ops.cc#L257-L259) does a division by a quantity that is controlled by the caller. The fix will be included in TensorFlow 2.5.0. We will also cherrypick this commit on TensorFlow 2.4.2, TensorFlow 2.3.3, TensorFlow 2.2.3 and TensorFlow 2.1.4, as these are also affected and still in supported range.

Products
Not specified
Affected versions
Not specified
Fixed versions
Not specified
CVEs
CVE-2021-29527
Confirmed fixed CVEs
Not specified
Updated in this feed
31 Oct 2026, 12:43 UTC · Revision 1

Source evidence

CVE-2021-29527

core-osv · Original source

Published 14 May 2021, 20:15 UTC

TensorFlow is an end-to-end open source platform for machine learning. An attacker can trigger a division by 0 in `tf.raw_ops.QuantizedConv2D`. This is because the implementation(https://github.com/tensorflow/tensorflow/blob/00e9a4d67d76703fa1aee33dac582acf317e0e81/tensorflow/core/kernels/quantized_conv_ops.cc#L257-L259) does a division by a quantity that is controlled by the caller. The fix will be included in TensorFlow 2.5.0. We will also cherrypick this commit on TensorFlow 2.4.2, TensorFlow 2.3.3, TensorFlow 2.2.3 and TensorFlow 2.1.4, as these are also affected and still in supported range.

osv:CVE-2021-29527
Complete source record
{
  "id": "b977503d9222f26a687c06d3a1b9eadf5e39331764b434f1611bf083d12c641b",
  "url": "https://osv.dev/vulnerability/CVE-2021-29527",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "CVE-2021-29527",
    "summary": "TensorFlow is an end-to-end open source platform for machine learning. An attacker can trigger a division by 0 in `tf.raw_ops.QuantizedConv2D`. This is because the implementation(https://github.com/tensorflow/tensorflow/blob/00e9a4d67d76703fa1aee33dac582acf317e0e81/tensorflow/core/kernels/quantized_conv_ops.cc#L257-L259) does a division by a quantity that is controlled by the caller. The fix will be included in TensorFlow 2.5.0. We will also cherrypick this commit on TensorFlow 2.4.2, TensorFlow 2.3.3, TensorFlow 2.2.3 and TensorFlow 2.1.4, as these are also affected and still in supported range.",
    "evidence": "osv:CVE-2021-29527",
    "products": [],
    "severity": "medium",
    "structured": {
      "id": "CVE-2021-29527",
      "aliases": [
        "BIT-tensorflow-2021-29527",
        "CVE-2021-29527",
        "GHSA-x4g7-fvjj-prg8",
        "PYSEC-2021-164",
        "PYSEC-2021-455",
        "PYSEC-2021-653"
      ],
      "metrics": [
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          "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H"
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                  "fixed": "cfa91be9863a91d5105a3b4941096044ab32036b"
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                    "range": [
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                    "source": "REFERENCES_COMMIT"
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          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2021-29527.json",
            "vanir_signatures": [
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                "source": "https://github.com/tensorflow/tensorflow/commit/cfa91be9863a91d5105a3b4941096044ab32036b",
                "target": {
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                "signature_type": "Line",
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            "vanir_signatures_modified": "2026-10-20T14:20:37Z"
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      ],
      "modified": "2026-10-20T14:20:37.159265896Z",
      "provider": "osv",
      "references": [
        "https://github.com/tensorflow/tensorflow/commit/cfa91be9863a91d5105a3b4941096044ab32036b",
        "https://github.com/tensorflow/tensorflow/security/advisories/GHSA-x4g7-fvjj-prg8"
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      "provider_metadata": {}
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    "related_cves": [
      {
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        "evidence": "/id"
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    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
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  "source_id": "core-osv",
  "document_id": 388827,
  "published_at": "2021-05-14T20:15:11.85+00:00"
}