CVE-2021-29534

Advisory

Tensorflow-gpu 2.1.4, 2.2.3, 2.3.3, 2.4.2, and 2.5.0 include a fix for CVE-2021-29534: An attacker can trigger a denial of service via a 'CHECK'-fail in 'tf.raw_ops.SparseConcat'. This is because the implementation (https://github.com/tensorflow/tensorflow/blob/b432a38fe0e1b4b904a6c222cbce794c39703e87/tensorflow/core/kernels/sparse_concat_op.cc#L76) takes the values specified in 'shapes[0]' as dimensions for the output shape. The 'TensorShape' constructor (https://github.com/tensorflow/tensorflow/blob/6f9896890c4c703ae0a0845394086e2e1e523299/tensorflow/core/framework/tensor_shape.cc#L183-L188) uses a 'CHECK' operation which triggers when 'InitDims' (https://github.com/tensorflow/tensorflow/blob/6f9896890c4c703ae0a0845394086e2e1e523299/tensorflow/core/framework/tensor_shape.cc#L212-L296) returns a non-OK status. This is a legacy implementation of the constructor and operations should use 'BuildTensorShapeBase' or 'AddDimWithStatus' to prevent 'CHECK'-failures in the presence of overflows.

Affected package

Affected versions

Fixed versions

Vulnerability changelog

This vulnerability has no description

Resources

• https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-29534
• https://github.com/tensorflow/tensorflow/commit/69c68ecbb24dff3fa0e46da0d16c821a2dd22d7c
• https://github.com/tensorflow/tensorflow/security/advisories/GHSA-6j9c-grc6-5m6g