CVE-2021-41198: Overflow/crash in `tf.tile` when tiling tensor is large
Impact If tf.tile is called with a large input argument then the TensorFlow process will crash due to a CHECK-failure caused by an overflow.
python import tensorflow as tf import numpy as np tf.keras.backend.tile(x=np.ones((1,1,1)), n=[100000000,100000000, 100000000])
The number of elements in the output tensor is too much for the int64t type and the overflow is detected via a CHECK statement. This aborts the process.
Patches We have patched the issue in GitHub commit 9294094df6fea79271778eb7e7ae1bad8b5ef98f (merging #51138).
The fix will be included in TensorFlow 2.7.0. We will also cherrypick this commit on TensorFlow 2.6.1, TensorFlow 2.5.2, and TensorFlow 2.4.4, as these are also affected and still in supported range.
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Attribution This vulnerability has been reported externally via a GitHub issue.
Other sources
TensorFlow is an open source platform for machine learning. In affected versions if tf.tile is called with a large input argument then the TensorFlow process will crash due to a CHECK-failure caused by an overflow. The number of elements in the output tensor is too much for the int64t type and the overflow is detected via a CHECK statement. This aborts the process. The fix will be included in TensorFlow 2.7.0. We will also cherrypick this commit on TensorFlow 2.6.1, TensorFlow 2.5.2, and TensorFlow 2.4.4, as these are also affected and still in supported range.
Affected Software
Remediation
Event History
Frequently Asked Questions
What is the severity of CVE-2021-41198?
The CVE-2021-41198 vulnerability has been rated as a high severity issue due to the risk of process crashes.
How do I fix CVE-2021-41198?
To remediate CVE-2021-41198, upgrade your TensorFlow installation to version 2.4.4 or to a version between 2.5.0 and 2.5.2 or 2.6.0 and 2.6.1.
What systems are vulnerable to CVE-2021-41198?
CVE-2021-41198 affects TensorFlow versions prior to 2.4.4, between 2.5.0 and 2.5.2, and between 2.6.0 and 2.6.1.
What is the impact of CVE-2021-41198?
The impact of CVE-2021-41198 results in TensorFlow crashing when a large input argument is passed to the tf.tile function.
Can CVE-2021-41198 be exploited remotely?
CVE-2021-41198 requires local access to exploit, as it involves calling a specific TensorFlow function with crafted inputs.