Security advisory
TensorFlow is an open source platform for machine learning. In affected versions the implementation of `tf.math.segment_*` operations results in a `CHECK`-fail related abort (and denial of service) if a segment id in `segment_ids` is large. This is similar to CVE-2021-29584 (and similar other reported vulnerabilities in TensorFlow, localized to specific APIs): the implementation (both on CPU and GPU) computes the output shape using `AddDim`. However, if the number of elements in the tensor overflows an `int64_t` value, `AddDim` results in a `CHECK` failure which provokes a `std::abort`. Instead, code should use `AddDimWithStatus`. 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-2021-41195
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 31 Oct 2026, 11:56 UTC · Revision 1
Source evidence
TensorFlow is an open source platform for machine learning. In affected versions the implementation of `tf.math.segment_*` operations results in a `CHECK`-fail related abort (and denial of service) if a segment id in `segment_ids` is large. This is similar to CVE-2021-29584 (and similar other reported vulnerabilities in TensorFlow, localized to specific APIs): the implementation (both on CPU and GPU) computes the output shape using `AddDim`. However, if the number of elements in the tensor overflows an `int64_t` value, `AddDim` results in a `CHECK` failure which provokes a `std::abort`. Instead, code should use `AddDimWithStatus`. 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-2021-41195
Complete source record
{
"id": "d113aaabd85370713def56df56f3c0f6f3054bce8bf6209cf11e63bd2cdccb8e",
"url": "https://osv.dev/vulnerability/CVE-2021-41195",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "CVE-2021-41195",
"summary": "TensorFlow is an open source platform for machine learning. In affected versions the implementation of `tf.math.segment_*` operations results in a `CHECK`-fail related abort (and denial of service) if a segment id in `segment_ids` is large. This is similar to CVE-2021-29584 (and similar other reported vulnerabilities in TensorFlow, localized to specific APIs): the implementation (both on CPU and GPU) computes the output shape using `AddDim`. However, if the number of elements in the tensor overflows an `int64_t` value, `AddDim` results in a `CHECK` failure which provokes a `std::abort`. Instead, code should use `AddDimWithStatus`. 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-2021-41195",
"products": [],
"severity": "medium",
"structured": {
"id": "CVE-2021-41195",
"aliases": [
"BIT-tensorflow-2021-41195",
"CVE-2021-41195",
"GHSA-cq76-mxrc-vchh",
"PYSEC-2021-842",
"PYSEC-2021-844",
"PYSEC-2021-846"
],
"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": [
{
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"repo": "https://github.com/tensorflow/tensorflow",
"type": "GIT",
"events": [
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{
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"versions": [
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"v1.1.0-rc2",
"v1.1.0-rc1",
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],
"database_specific": {
"source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2021-41195.json"
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],
"modified": "2026-10-20T10:54:57.773628707Z",
"provider": "osv",
"references": [
"https://github.com/tensorflow/tensorflow/commit/e9c81c1e1a9cd8dd31f4e83676cab61b60658429",
"https://github.com/tensorflow/tensorflow/issues/46888",
"https://github.com/tensorflow/tensorflow/pull/51733",
"https://github.com/tensorflow/tensorflow/security/advisories/GHSA-cq76-mxrc-vchh"
],
"provider_metadata": {}
},
"related_cves": [
{
"value": "CVE-2021-41195",
"evidence": "/id"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 386561,
"published_at": "2021-11-05T20:15:07.707+00:00"
}