TensorFlow is an end-to-end open source platform for machine learning. TFlite graphs must not have loops between nodes. However, this condition was not checked and an attacker could craft models that would result in infinite loop during evaluation. In certain cases, the infinite loop would be replaced by stack overflow due to too many recursive calls. For example, the `While` implementation(https://github.com/tensorflow/tensorflow/blob/106d8f4fb89335a2c52d7c895b7a7485465ca8d9/tensorflow/lite/kernels/while.cc) could be tricked into a scneario where both the body and the loop subgraphs are the same. Evaluating one of the subgraphs means calling the `Eval` function for the other and this quickly exhaust all stack space. 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. Please consult our security guide(https://github.com/tensorflow/tensorflow/blob/master/SECURITY.md) for more information regarding the security model and how to contact us with issues and questions.
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References
History
No history.
MITRE
Status: PUBLISHED
Assigner: GitHub_M
Published: 2021-05-14T19:22:29
Updated: 2024-08-03T22:11:06.069Z
Reserved: 2021-03-30T00:00:00
Link: CVE-2021-29591
Vulnrichment
No data.
NVD
Status : Modified
Published: 2021-05-14T20:15:15.017
Modified: 2024-11-21T06:01:26.810
Link: CVE-2021-29591
Redhat
No data.