cve.bz

CVE-2021-29540

7.8 highEPSS 0.2%

High (7.8) in google tensorflow. EPSS 0.2% chance of exploitation in the next 30 days. Fixed in tensorflow 2.1.4, 2.2.0rc0, 2.2.3.

TensorFlow is an end-to-end open source platform for machine learning. An attacker can cause a heap buffer overflow to occur in `Conv2DBackpropFilter`. This is because the implementation(https://github.com/tensorflow/tensorflow/blob/1b0296c3b8dd9bd948f924aa8cd62f87dbb7c3da/tensorflow/core/kernels/conv_grad_filter_ops.cc#L495-L497) computes the size of the filter tensor but does not validate that it matches the number of elements in `filter_sizes`. Later, when reading/writing to this buffer, code uses the value computed here, instead of the number of elements in the tensor. 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.

Severity

CVSS 3.1

7.8 high
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
EPSS
0.2% chance of exploitation in the next 30 days; higher than 11% of CVEs (scores of 2026-10-31)
CWEs
CWE-787, CWE-120
Published
Modified
Record from
the NVD, synced

Affected

Packages (OSV)

AdvisoryEcosystemPackageAffectedFixed in
GHSA-xgc3-m89p-vr3xPyPItensorflow<2.1.42.1.4
GHSA-xgc3-m89p-vr3xPyPItensorflow>=2.2.0 <2.2.32.2.3
GHSA-xgc3-m89p-vr3xPyPItensorflow>=2.3.0 <2.3.32.3.3
GHSA-xgc3-m89p-vr3xPyPItensorflow>=2.4.0 <2.4.22.4.2
GHSA-xgc3-m89p-vr3xPyPItensorflow-cpu<2.1.42.1.4
GHSA-xgc3-m89p-vr3xPyPItensorflow-cpu>=2.2.0 <2.2.32.2.3
GHSA-xgc3-m89p-vr3xPyPItensorflow-cpu>=2.3.0 <2.3.32.3.3
GHSA-xgc3-m89p-vr3xPyPItensorflow-cpu>=2.4.0 <2.4.22.4.2
GHSA-xgc3-m89p-vr3xPyPItensorflow-gpu<2.1.42.1.4
GHSA-xgc3-m89p-vr3xPyPItensorflow-gpu>=2.2.0 <2.2.32.2.3
GHSA-xgc3-m89p-vr3xPyPItensorflow-gpu>=2.3.0 <2.3.32.3.3
GHSA-xgc3-m89p-vr3xPyPItensorflow-gpu>=2.4.0 <2.4.22.4.2
PYSEC-2021-177PyPItensorflow<2.2.0rc0
>=2.2.0 <2.3.0rc0
>=2.3.0 <2.3.4
>=2.4.0 <2.4.3		2.2.0rc0, 2.3.0rc0, 2.3.4, 2.4.3
PYSEC-2021-468PyPItensorflow-cpu<2.2.0rc0
>=2.2.0 <2.3.0rc0
>=2.3.0 <2.3.4
>=2.4.0 <2.4.3		2.2.0rc0, 2.3.0rc0, 2.3.4, 2.4.3
PYSEC-2021-666PyPItensorflow-gpu<2.2.0rc0
>=2.2.0 <2.3.0rc0
>=2.3.0 <2.3.4
>=2.4.0 <2.4.3		2.2.0rc0, 2.3.0rc0, 2.3.4, 2.4.3

References

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