Medium
Security advisory
In eager mode, TensorFlow before versions 1.15.4, 2.0.3, 2.1.2, 2.2.1 and 2.3.1 does not set the session state. Hence, calling `tf.raw_ops.GetSessionHandle` or `tf.raw_ops.GetSessionHandleV2` results in a null pointer dereference In linked snippet, in eager mode, `ctx->session_state()` returns `nullptr`. Since code immediately dereferences this, we get a segmentation fault. The issue is patched in commit 9a133d73ae4b4664d22bd1aa6d654fec13c52ee1, 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-2020-15204
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 31 Oct 2026, 12:39 UTC · Revision 1
Source evidence
In eager mode, TensorFlow before versions 1.15.4, 2.0.3, 2.1.2, 2.2.1 and 2.3.1 does not set the session state. Hence, calling `tf.raw_ops.GetSessionHandle` or `tf.raw_ops.GetSessionHandleV2` results in a null pointer dereference In linked snippet, in eager mode, `ctx->session_state()` returns `nullptr`. Since code immediately dereferences this, we get a segmentation fault. The issue is patched in commit 9a133d73ae4b4664d22bd1aa6d654fec13c52ee1, and is released in TensorFlow versions 1.15.4, 2.0.3, 2.1.2, 2.2.1, or 2.3.1.
osv:CVE-2020-15204
Complete source record
{
"id": "bece84b138ac6d940f758783437abad7291cae22899897c553d73eba4f92aa27",
"url": "https://osv.dev/vulnerability/CVE-2020-15204",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "CVE-2020-15204",
"summary": "In eager mode, TensorFlow before versions 1.15.4, 2.0.3, 2.1.2, 2.2.1 and 2.3.1 does not set the session state. Hence, calling `tf.raw_ops.GetSessionHandle` or `tf.raw_ops.GetSessionHandleV2` results in a null pointer dereference In linked snippet, in eager mode, `ctx->session_state()` returns `nullptr`. Since code immediately dereferences this, we get a segmentation fault. The issue is patched in commit 9a133d73ae4b4664d22bd1aa6d654fec13c52ee1, 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-2020-15204",
"products": [],
"severity": "medium",
"structured": {
"id": "CVE-2020-15204",
"aliases": [
"BIT-tensorflow-2020-15204",
"CVE-2020-15204",
"GHSA-q8gv-q7wr-9jf8",
"PYSEC-2020-127",
"PYSEC-2020-284",
"PYSEC-2020-319"
],
"metrics": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L"
}
],
"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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"range": [
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{
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{
"range": [
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"source": "REFERENCES_COMMIT"
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{
"range": [
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"source": "REFERENCES_TAG",
"original_tag": "v2.3.1"
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"versions": [
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"v2.0.0",
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"v1.15.0-rc1",
"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-2020-15204.json",
"vanir_signatures": [
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"id": "CVE-2020-15204-9ee6decc",
"digest": {
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"source": "https://github.com/tensorflow/tensorflow/commit/9a133d73ae4b4664d22bd1aa6d654fec13c52ee1",
"target": {
"file": "tensorflow/core/kernels/session_ops.cc"
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"deprecated": false,
"signature_type": "Line",
"signature_version": "v1"
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"vanir_signatures_modified": "2026-10-20T14:10:48Z"
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],
"modified": "2026-10-20T14:10:48.389973099Z",
"provider": "osv",
"references": [
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"https://github.com/tensorflow/tensorflow/commit/9a133d73ae4b4664d22bd1aa6d654fec13c52ee1",
"https://github.com/tensorflow/tensorflow/security/advisories/GHSA-q8gv-q7wr-9jf8"
],
"provider_metadata": {
"unresolved_ranges": [
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],
"vendor_product": "opensuse:leap",
"extracted_events": [
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"range": [
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},
{
"last_affected": "15.2"
}
],
"source": "CPE_STRING"
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]
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}
},
"related_cves": [
{
"value": "CVE-2020-15204",
"evidence": "/id"
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],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 388656,
"published_at": "2020-09-25T19:15:15.713+00:00"
}