Critical
Security advisory
In tensorflow-lite before versions 1.15.4, 2.0.3, 2.1.2, 2.2.1 and 2.3.1, to mimic Python's indexing with negative values, TFLite uses `ResolveAxis` to convert negative values to positive indices. However, the only check that the converted index is now valid is only present in debug builds. If the `DCHECK` does not trigger, then code execution moves ahead with a negative index. This, in turn, results in accessing data out of bounds which results in segfaults and/or data corruption. The issue is patched in commit 2d88f470dea2671b430884260f3626b1fe99830a, and is released in TensorFlow versions 1.15.4, 2.0.3, 2.1.2, 2.2.1, or 2.3.1.
- Products
- Not specified
- Affected versions
- Not specified
- Fixed versions
- Not specified
- CVEs
- CVE-2020-15207
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 31 Oct 2026, 12:38 UTC · Revision 1
Source evidence
In tensorflow-lite before versions 1.15.4, 2.0.3, 2.1.2, 2.2.1 and 2.3.1, to mimic Python's indexing with negative values, TFLite uses `ResolveAxis` to convert negative values to positive indices. However, the only check that the converted index is now valid is only present in debug builds. If the `DCHECK` does not trigger, then code execution moves ahead with a negative index. This, in turn, results in accessing data out of bounds which results in segfaults and/or data corruption. The issue is patched in commit 2d88f470dea2671b430884260f3626b1fe99830a, and is released in TensorFlow versions 1.15.4, 2.0.3, 2.1.2, 2.2.1, or 2.3.1.
osv:CVE-2020-15207
Complete source record
{
"id": "50dd34808e8d0274590cce554aabe9bc896219ea354c8e1a595221e8530dc474",
"url": "https://osv.dev/vulnerability/CVE-2020-15207",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "CVE-2020-15207",
"summary": "In tensorflow-lite before versions 1.15.4, 2.0.3, 2.1.2, 2.2.1 and 2.3.1, to mimic Python's indexing with negative values, TFLite uses `ResolveAxis` to convert negative values to positive indices. However, the only check that the converted index is now valid is only present in debug builds. If the `DCHECK` does not trigger, then code execution moves ahead with a negative index. This, in turn, results in accessing data out of bounds which results in segfaults and/or data corruption. The issue is patched in commit 2d88f470dea2671b430884260f3626b1fe99830a, and is released in TensorFlow versions 1.15.4, 2.0.3, 2.1.2, 2.2.1, or 2.3.1.",
"evidence": "osv:CVE-2020-15207",
"products": [],
"severity": "critical",
"structured": {
"id": "CVE-2020-15207",
"aliases": [
"BIT-tensorflow-2020-15207",
"CVE-2020-15207",
"GHSA-q4qf-3fc6-8x34",
"PYSEC-2020-130",
"PYSEC-2020-287",
"PYSEC-2020-322"
],
"metrics": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H"
}
],
"affected": [
{
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"repo": "https://github.com/tensorflow/tensorflow",
"type": "GIT",
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{
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{
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{
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{
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{
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{
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{
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{
"fixed": "2d88f470dea2671b430884260f3626b1fe99830a"
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"source": "CPE_RANGE"
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{
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{
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"range": [
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{
"fixed": "2.3.1"
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],
"source": "CPE_RANGE"
},
{
"range": [
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],
"source": "REFERENCES_COMMIT"
},
{
"range": [
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"source": "REFERENCES_TAG",
"original_tag": "v2.3.1"
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],
"versions": [
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"v2.3.0",
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"v2.0.1",
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"v2.0.0",
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"v1.15.0-rc0",
"v1.12.1",
"v1.9.0-rc2",
"v1.6.0-rc1",
"v1.1.0-rc2",
"v1.1.0-rc1",
"0.6.0",
"0.5.0"
],
"database_specific": {
"source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2020-15207.json",
"vanir_signatures": [
{
"id": "CVE-2020-15207-4f9cd49a",
"digest": {
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"line_hashes": [
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},
"source": "https://github.com/tensorflow/tensorflow/commit/2d88f470dea2671b430884260f3626b1fe99830a",
"target": {
"file": "tensorflow/lite/kernels/internal/reference/reduce.h"
},
"deprecated": false,
"signature_type": "Line",
"signature_version": "v1"
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{
"id": "CVE-2020-15207-ee3e9c67",
"digest": {
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"function_hash": "307496285844794787636736706317161422188"
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"source": "https://github.com/tensorflow/tensorflow/commit/2d88f470dea2671b430884260f3626b1fe99830a",
"target": {
"file": "tensorflow/lite/kernels/internal/reference/reduce.h",
"function": "ResolveAxis"
},
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"signature_type": "Function",
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],
"vanir_signatures_modified": "2026-10-20T14:10:23Z"
}
}
],
"modified": "2026-10-20T14:10:23.969086319Z",
"provider": "osv",
"references": [
"https://github.com/tensorflow/tensorflow/releases/tag/v2.3.1",
"https://github.com/tensorflow/tensorflow/commit/2d88f470dea2671b430884260f3626b1fe99830a",
"https://github.com/tensorflow/tensorflow/security/advisories/GHSA-q4qf-3fc6-8x34"
],
"provider_metadata": {
"unresolved_ranges": [
{
"cpes": [
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],
"vendor_product": "opensuse:leap",
"extracted_events": [
{
"range": [
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"introduced": "15.2"
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{
"last_affected": "15.2"
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],
"source": "CPE_STRING"
}
]
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}
},
"related_cves": [
{
"value": "CVE-2020-15207",
"evidence": "/id"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 388601,
"published_at": "2020-09-25T19:15:15.993+00:00"
}