CVE-2021-37681

Advisory

Tensorflow-rocm 2.3.4, 2.4.3, 2.5.1 and 2.6.0 include a fix for CVE-2021-37681: In affected versions the implementation of SVDF in TFLite is vulnerable to a null pointer error (https://github.com/tensorflow/tensorflow/blob/460e000de3a83278fb00b61a16d161b1964f15f4/tensorflow/lite/kernels/svdf.cc#L300-L313). The 'GetVariableInput' function (https://github.com/tensorflow/tensorflow/blob/460e000de3a83278fb00b61a16d161b1964f15f4/tensorflow/lite/kernels/kernel_util.cc#L115-L119) can return a null pointer but 'GetTensorData' assumes that the argument is always a valid tensor. Furthermore, because 'GetVariableInput' calls 'GetMutableInput' (https://github.com/tensorflow/tensorflow/blob/460e000de3a83278fb00b61a16d161b1964f15f4/tensorflow/lite/kernels/kernel_util.cc#L82-L90) which might return 'nullptr', the 'tensor->is_variable' expression can also trigger a null pointer exception. The Tensorflow team has patched the issue in GitHub commit 5b048e87e4e55990dae6b547add4dae59f4e1c76.

Affected package

Affected versions

Fixed versions

Vulnerability changelog

This vulnerability has no description

Resources

• https://github.com/tensorflow/tensorflow/security/advisories/GHSA-7xwj-5r4v-429p
• https://github.com/tensorflow/tensorflow/commit/5b048e87e4e55990dae6b547add4dae59f4e1c76
• https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-37681