TI-2021-15560 Aliases CVE-2021-37685 GHSA-c545-c4f9-rf6v

Heap OOB in TensorFlow Lite

LOW 24CWE-125Published 2021-08-12 · Updated 2024-08-04

Key facts

Attack vector: Local
Privileges required: Low
User interaction: None
Attack complexity: Low
Impact type: Information disclosure
Confidentiality · integrity · availability: High · None · None
Fix status: Fixed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA and GitHub. Impact type from CWE-125 and the CVSS impact.

Summary

TensorFlow is an end-to-end open source platform for machine learning. In affected versions TFLite's [`expand_dims.cc`](https://github.com/tensorflow/tensorflow/blob/149562d49faa709ea80df1d99fc41d005b81082a/tensorflow/lite/kernels/expand_dims.cc#L36-L50) contains a vulnerability which allows reading one element outside of bounds of heap allocated data. If `axis` is a large negative value (e.g., `-100000`), then after the first `if` it would still be negative. The check following the `if` statement will pass and the `for` loop would read one element before the start of `input_dims.data` (when `i = 0`). We have patched the issue in GitHub commit d94ffe08a65400f898241c0374e9edc6fa8ed257. The fix will be included in TensorFlow 2.6.0. We will also cherrypick this commit on TensorFlow 2.5.1, TensorFlow 2.4.3, and TensorFlow 2.3.4, as these are also affected and still in supported range.

Why it matters now

EPSS 0.00172 6th percentileScored 2026-11-07

Fix Fixed tensorflow (tensorflow): 2.5.1, 2.4.3, 2.3.4tensorflow (PyPI): 2.3.4, 2.4.3, 2.5.1+2 more products

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
Google	tensorflow	2.5.0 to before 2.5.1; 2.4.0 to before 2.4.3; before 2.3.4	2.5.1, 2.4.3, 2.3.4	Patch available	CNA
—	tensorflow (PyPI)	before 2.3.4	2.3.4	Patch available	GHSA-c545-c4f9-rf6v
—	tensorflow (PyPI)	2.4.0 to before 2.4.3	2.4.3	Patch available	GHSA-c545-c4f9-rf6v
—	tensorflow (PyPI)	2.5.0 to before 2.5.1	2.5.1	Patch available	GHSA-c545-c4f9-rf6v
—	tensorflow-cpu (PyPI)	before 2.3.4	2.3.4	Patch available	GHSA-c545-c4f9-rf6v
—	tensorflow-cpu (PyPI)	2.4.0 to before 2.4.3	2.4.3	Patch available	GHSA-c545-c4f9-rf6v
—	tensorflow-cpu (PyPI)	2.5.0 to before 2.5.1	2.5.1	Patch available	GHSA-c545-c4f9-rf6v
—	tensorflow-gpu (PyPI)	before 2.3.4	2.3.4	Patch available	GHSA-c545-c4f9-rf6v
—	tensorflow-gpu (PyPI)	2.4.0 to before 2.4.3	2.4.3	Patch available	GHSA-c545-c4f9-rf6v
—	tensorflow-gpu (PyPI)	2.5.0 to before 2.5.1	2.5.1	Patch available	GHSA-c545-c4f9-rf6v

tensorflow VendorGoogle Affected 2.5.0 to before 2.5.1; 2.4.0 to before 2.4.3; before 2.3.4 Fixed in 2.5.1, 2.4.3, 2.3.4 Patch available CNA
tensorflow (PyPI) Vendor— Affected before 2.3.4 Fixed in 2.3.4 Patch available GHSA-c545-c4f9-rf6v
tensorflow (PyPI) Vendor— Affected 2.4.0 to before 2.4.3 Fixed in 2.4.3 Patch available GHSA-c545-c4f9-rf6v
tensorflow (PyPI) Vendor— Affected 2.5.0 to before 2.5.1 Fixed in 2.5.1 Patch available GHSA-c545-c4f9-rf6v
tensorflow-cpu (PyPI) Vendor— Affected before 2.3.4 Fixed in 2.3.4 Patch available GHSA-c545-c4f9-rf6v
tensorflow-cpu (PyPI) Vendor— Affected 2.4.0 to before 2.4.3 Fixed in 2.4.3 Patch available GHSA-c545-c4f9-rf6v
tensorflow-cpu (PyPI) Vendor— Affected 2.5.0 to before 2.5.1 Fixed in 2.5.1 Patch available GHSA-c545-c4f9-rf6v
tensorflow-gpu (PyPI) Vendor— Affected before 2.3.4 Fixed in 2.3.4 Patch available GHSA-c545-c4f9-rf6v
tensorflow-gpu (PyPI) Vendor— Affected 2.4.0 to before 2.4.3 Fixed in 2.4.3 Patch available GHSA-c545-c4f9-rf6v
tensorflow-gpu (PyPI) Vendor— Affected 2.5.0 to before 2.5.1 Fixed in 2.5.1 Patch available GHSA-c545-c4f9-rf6v

CPE configurations NVD · 5

CPE	Versions	Role	Vendor
cpe:2.3:a:google:tensorflow::::::::	2.3.0 to before 2.3.4; 2.4.0 to before 2.4.3	Vulnerable	Google
cpe:2.3:a:google:tensorflow:2.5.0:::::::*	2.5.0	Vulnerable	Google
cpe:2.3:a:google:tensorflow:2.6.0:rc0::::::	2.6.0 rc0	Vulnerable	Google
cpe:2.3:a:google:tensorflow:2.6.0:rc1::::::	2.6.0 rc1	Vulnerable	Google
cpe:2.3:a:google:tensorflow:2.6.0:rc2::::::	2.6.0 rc2	Vulnerable	Google

cpe:2.3:a:google:tensorflow:*:*:*:*:*:*:*:* Versions 2.3.0 to before 2.3.4; 2.4.0 to before 2.4.3 Vulnerable ·Google
cpe:2.3:a:google:tensorflow:2.5.0:*:*:*:*:*:*:* Versions 2.5.0 Vulnerable ·Google
cpe:2.3:a:google:tensorflow:2.6.0:rc0:*:*:*:*:*:* Versions 2.6.0 rc0 Vulnerable ·Google
cpe:2.3:a:google:tensorflow:2.6.0:rc1:*:*:*:*:*:* Versions 2.6.0 rc1 Vulnerable ·Google
cpe:2.3:a:google:tensorflow:2.6.0:rc2:*:*:*:*:*:* Versions 2.6.0 rc2 Vulnerable ·Google

Remediation

Fix · CNA tensorflow (tensorflow) Fixed in 2.5.1, 2.4.3, 2.3.4
Fix · GHSA-c545-c4f9-rf6v tensorflow (PyPI) Fixed in 2.3.4 Advisory →
Fix · GHSA-c545-c4f9-rf6v tensorflow (PyPI) Fixed in 2.4.3 Advisory →
Fix · GHSA-c545-c4f9-rf6v tensorflow (PyPI) Fixed in 2.5.1 Advisory →
Fix · GHSA-c545-c4f9-rf6v tensorflow-cpu (PyPI) Fixed in 2.3.4 Advisory →
Fix · GHSA-c545-c4f9-rf6v tensorflow-cpu (PyPI) Fixed in 2.4.3 Advisory →
Fix · GHSA-c545-c4f9-rf6v tensorflow-cpu (PyPI) Fixed in 2.5.1 Advisory →
Fix · GHSA-c545-c4f9-rf6v tensorflow-gpu (PyPI) Fixed in 2.3.4 Advisory →
Fix · GHSA-c545-c4f9-rf6v tensorflow-gpu (PyPI) Fixed in 2.4.3 Advisory →
Fix · GHSA-c545-c4f9-rf6v tensorflow-gpu (PyPI) Fixed in 2.5.1 Advisory →

Timeline

2026-10-02 Threatist record created from CVE-2021-37685
2026-10-03 Alias added: GHSA-c545-c4f9-rf6v

References

Patch 1

https://github.com/tensorflow/tensorflow/commit/d94ffe08a65400f898241c0374e9edc6fa8ed257

Advisory 2

Other 5

TI-2022-20241 FractionalMaxPool and FractionalAVGPool heap out-of-bounds acess in Tensorflow CVSS 3.1CRITICAL 9.8
TI-2022-07640 Integer overflow in Tensorflow CVSS 3.1CRITICAL 9.8
TI-2022-07627 Out of bounds read and write in Tensorflow CVSS 3.1HIGH 8.8
TI-2022-07619 Out of bounds write in Tensorflow CVSS 3.1HIGH 8.8
TI-2022-07613 Read and Write outside of bounds in TFLite CVSS 3.1HIGH 8.8
TI-2022-07612 Integer overflow in TFLite CVSS 3.1HIGH 8.8

See all 430 →

Sources

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