Integer overflow in Tensorflow
High6.5CVE-2022-23575 · Published Feb 10, 2022 · updated Jul 13, 2026
### Impact The [implementation of `OpLevelCostEstimator::CalculateTensorSize`](https://github.com/tensorflow/tensorflow/blob/a1320ec1eac186da1d03f033109191f715b2b130/tensorflow/core/grappler/costs/op_level_cost_estimator.cc#L1552-L1558) is vulnerable to an integer overflow if an attacker can create an operation which would involve a tensor with large enough number of elements: ```cc int64_t OpLevelCostEstimator::CalculateTensorSize( const OpInfo::TensorProperties& tensor, bool* found_unknown_shapes) { int64_t count = CalculateTensorElementCount(tensor, found_unknown_shapes); int size = DataTypeSize(BaseType(tensor.dtype())); VLOG(2) << "Count: " << count << " DataTypeSize: " << size; return count * size; } ``` Here, `count` and `size` can be large enough to cause `count * size` to overflow. ### Patches We have patched the issue in GitHub commit [fcd18ce3101f245b083b30655c27b239dc72221e](https://github.com/tensorflow/tensorflow/commit/fcd18ce3101f245b083b30655c27b239dc72221e). The fix will be included in TensorFlow 2.8.0. We will also cherrypick this commit on TensorFlow 2.7.1, TensorFlow 2.6.3, and TensorFlow 2.5.3, as these are also affected and still in supported ra...
Affected versions
| Package | Affected | Fixed in |
|---|---|---|
| tensorflow PyPI | < 2.5.3 | 2.5.3 |
| >= 2.6.0, < 2.6.3 | 2.6.3 | |
| >= 2.7.0, < 2.7.1 | 2.7.1 |
Details and references
### Impact The [implementation of `OpLevelCostEstimator::CalculateTensorSize`](https://github.com/tensorflow/tensorflow/blob/a1320ec1eac186da1d03f033109191f715b2b130/tensorflow/core/grappler/costs/op_level_cost_estimator.cc#L1552-L1558) is vulnerable to an integer overflow if an attacker can create an operation which would involve a tensor with large enough number of elements: ```cc int64_t OpLevelCostEstimator::CalculateTensorSize( const OpInfo::TensorProperties& tensor, bool* found_unknown_shapes) { int64_t count = CalculateTensorElementCount(tensor, found_unknown_shapes); int size = DataTypeSize(BaseType(tensor.dtype())); VLOG(2) << "Count: " << count << " DataTypeSize: " << size; return count * size; } ``` Here, `count` and `size` can be large enough to cause `count * size` to overflow. ### Patches We have patched the issue in GitHub commit [fcd18ce3101f245b083b30655c27b239dc72221e](https://github.com/tensorflow/tensorflow/commit/fcd18ce3101f245b083b30655c27b239dc72221e). The fix will be included in TensorFlow 2.8.0. We will also cherrypick this commit on TensorFlow 2.7.1, TensorFlow 2.6.3, and TensorFlow 2.5.3, as these are also affected and still in supported range. ### For more information 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.
- CVSS 3.1
- CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
- Severity from
- GitHub (reviewed advisory)
- Weakness
- CWE-190
- Also known as
- BIT-tensorflow-2022-23575, CVE-2022-23575, PYSEC-2022-139, PYSEC-2022-84, PYSEC-2026-3160
- github.com/tensorflow/tensorflow/security/advisories/GHSA-c94w-c95p-phf8
- nvd.nist.gov/vuln/detail/CVE-2022-23575
- github.com/tensorflow/tensorflow/commit/fcd18ce3101f245b083b30655c27b239dc72221e
- github.com/pypa/advisory-database/tree/main/vulns/tensorflow-cpu/PYSEC-2022-84.yaml
- github.com/pypa/advisory-database/tree/main/vulns/tensorflow-gpu/PYSEC-2022-139.yaml
- github.com/tensorflow/tensorflow
- github.com/tensorflow/tensorflow/blob/a1320ec1eac186da1d03f033109191f715b2b130/tensorflow/core/grappler/costs/op_level_cost_estimator.cc#L1552-L1558
More TensorFlow advisories
All TensorFlow| Date | Advisory | Severity | Fixed in |
|---|---|---|---|
| Feb 102022 | `CHECK`-failures in binary ops in Tensorflow Medium6.5Feb 10, 2022 | Medium6.5 | 2.5.3+2 more |
| Feb 102022 | `CHECK`-failures in `TensorByteSize` in TensorflowMedium6.5Feb 10, 2022 | Medium6.5 | 2.5.3+2 more |
| Feb 102022 | `CHECK`-failures during Grappler's `SafeToRemoveIdentity` in TensorflowMedium6.5Feb 10, 2022 | Medium6.5 | 2.5.3+2 more |
| Feb 102022 | Memory leak in TensorflowMedium4.3Feb 10, 2022 | Medium4.3 | 2.5.3+2 more |
| Feb 102022 | Integer overflow in TensorflowHigh6.5Feb 10, 2022 | High6.5 | 2.5.3+2 more |
| Feb 102022 | Null-dereference in TensorflowHigh6.5Feb 10, 2022 | High6.5 | 2.5.3+2 more |