Heap buffer overflow due to incorrect hash function in TensorFlow
Key facts
- Attack vector
- Local
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Denial of service
- Confidentiality · integrity · availability
- None · None · High
- Fix status
- Fixed
Attack profile from CVSS 3.1 · CNA. Fix status from CNA and GitHub. Impact type from CWE-120 and the CVSS impact.
Summary
TensorFlow is an open source platform for machine learning. In version 2.8.0, the `TensorKey` hash function used total estimated `AllocatedBytes()`, which (a) is an estimate per tensor, and (b) is a very poor hash function for constants (e.g. `int32_t`). It also tried to access individual tensor bytes through `tensor.data()` of size `AllocatedBytes()`. This led to ASAN failures because the `AllocatedBytes()` is an estimate of total bytes allocated by a tensor, including any pointed-to constructs (e.g. strings), and does not refer to contiguous bytes in the `.data()` buffer. The discoverers could not use this byte vector anyway because types such as `tstring` include pointers, whereas they needed to hash the string values themselves. This issue is patched in Tensorflow versions 2.9.0 and 2.8.1.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| tensorflow | == 2.8.0 | — | No fix listed | CNA | |
| — | tensorflow (PyPI) | 2.8.0 to before 2.8.1 | 2.8.1 | Patch available | GHSA-hc2f-7r5r-r2hg |
| — | tensorflow-cpu (PyPI) | 2.8.0 to before 2.8.1 | 2.8.1 | Patch available | GHSA-hc2f-7r5r-r2hg |
| — | tensorflow-gpu (PyPI) | 2.8.0 to before 2.8.1 | 2.8.1 | Patch available | GHSA-hc2f-7r5r-r2hg |
- tensorflow VendorGoogle Affected == 2.8.0 Fixed in — No fix listed CNA
- tensorflow (PyPI) Vendor— Affected 2.8.0 to before 2.8.1 Fixed in 2.8.1 Patch available GHSA-hc2f-7r5r-r2hg
- tensorflow-cpu (PyPI) Vendor— Affected 2.8.0 to before 2.8.1 Fixed in 2.8.1 Patch available GHSA-hc2f-7r5r-r2hg
- tensorflow-gpu (PyPI) Vendor— Affected 2.8.0 to before 2.8.1 Fixed in 2.8.1 Patch available GHSA-hc2f-7r5r-r2hg
Remediation
- Fix · GHSA-hc2f-7r5r-r2hg tensorflow (PyPI) Fixed in 2.8.1 Advisory →
- Fix · GHSA-hc2f-7r5r-r2hg tensorflow-cpu (PyPI) Fixed in 2.8.1 Advisory →
- Fix · GHSA-hc2f-7r5r-r2hg tensorflow-gpu (PyPI) Fixed in 2.8.1 Advisory →
Timeline
- 2026-10-02 Threatist record created from CVE-2022-29210
- 2026-10-03 Alias added: GHSA-hc2f-7r5r-r2hg
References
Patch 2
Advisory 4
- https://github.com/tensorflow/tensorflow/releases/tag/v2.8.1
- https://github.com/tensorflow/tensorflow/releases/tag/v2.9.0
- https://github.com/tensorflow/tensorflow/blob/f3b9bf4c3c0597563b289c0512e98d4ce81f886e/tensorflow/core/framework/tensor_key.h#L53-L64
- https://nvd.nist.gov/vuln/detail/CVE-2022-29210
More Google Tensorflow vulnerabilities
- TI-2022-20241 FractionalMaxPool and FractionalAVGPool heap out-of-bounds acess in Tensorflow CVSS 3.1CRITICAL 9.8
- TI-2022-07640 Integer overflow in Tensorflow CVSS 3.1CRITICAL 9.8
- TI-2022-07627 Out of bounds read and write in Tensorflow CVSS 3.1HIGH 8.8
- TI-2022-07619 Out of bounds write in Tensorflow CVSS 3.1HIGH 8.8
- TI-2022-07613 Read and Write outside of bounds in TFLite CVSS 3.1HIGH 8.8
- TI-2022-07612 Integer overflow in TFLite CVSS 3.1HIGH 8.8
Sources
- CVE-2022-29210 · CVE Program
- CVE-2022-29210 · NVD
- FIRST EPSS
- GHSA-hc2f-7r5r-r2hg · GitHub Advisory Database · CC BY 4.0
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