CVE-2021-29520

TensorFlow is an end-to-end open source platform for machine learning. Missing validation between arguments to `tf.raw_ops.Conv3DBackprop*` operations can result in heap buffer overflows. This is because the implementation(https://github.com/tensorflow/tensorflow/blob/4814fafb0ca6b5ab58a09411523b2193fed23fed/tensorflow/core/kernels/conv_grad_shape_utils.cc#L94-L153) assumes that the `input`, `filter_sizes` and `out_backprop` tensors have the same shape, as they are accessed in parallel. 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.

• CWE-120
• CWE-787

• https://github.com/tensorflow/tensorflow/commit/8f37b52e1320d8d72a9529b2468277791a261197Patch, Third Party Advisory
• https://github.com/tensorflow/tensorflow/security/advisories/GHSA-wcv5-qrj6-9pfmExploit, Patch, Third Party Advisory
• https://github.com/tensorflow/tensorflow/commit/8f37b52e1320d8d72a9529b2468277791a261197Patch, Third Party Advisory
• https://github.com/tensorflow/tensorflow/security/advisories/GHSA-wcv5-qrj6-9pfmExploit, Patch, Third Party Advisory

Published

May 14, 2021

Last Modified

Jun 17, 2026

Status

Modified

• How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
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