CVE-2021-37676
Reference binding to nullptr in shape inference in TensorFlow
Reported by github_m · Published August 12, 2021
tensorflow-gpu is fixed in 2.5.1, 2.4.3 and 2.3.4 (PyPI)
TensorFlow is an end-to-end open source platform for machine learning. In affected versions an attacker can cause undefined behavior via binding a reference to null pointer in `tf.raw_ops.SparseFillEmptyRows`. The shape inference [implementation](https://github.com/tensorflow/tensorflow/blob/460e000de3a83278fb00b61a16d161b1964f15f4/tensorflow/core/ops/sparse_ops.cc#L608-L634) does not validate that the input arguments are not empty tensors. We have patched the issue in GitHub commit 578e634b4f1c1c684d4b4294f9e5281b2133b3ed. The fix will be included in TensorFlow 2.6.0. We will also cherrypick this commit on TensorFlow 2.5.1, TensorFlow 2.4.3, and TensorFlow 2.3.4, as these are also affected and still in supported range.
Fixed versions
Upgrade to a fixed version or later. Language registries are listed first, then Linux distributions, then vendor products.
| Package | Ecosystem | Fixed in |
|---|---|---|
| tensorflow-gpu | PyPI | 2.5.1, 2.4.3, 2.3.4 |
| tensorflow | PyPI | 2.5.1, 2.4.3, 2.3.4 |
Risk scores
Affected products
| Vendor | Product | Versions |
|---|---|---|
| tensorflow | tensorflow | >= 2.5.0, < 2.5.1, >= 2.4.0, < 2.4.3, < 2.3.4 |
| PyPI | tensorflow-gpu | 2.5.0, 2.5.0, 2.4.0 |
| tensorflow | tensorflow | 0, 2.5.0, 2.4.0 |
| PyPI | tensorflow-cpu | 0, 2.4.0, 2.5.0 |
| arch | tensorflow | 0 |
| PyPI | tensorflow | 0, 2.5.0, 2.5.0 |
Timeline
- Aug 12, 2021 CVE Published
- Aug 13, 2021 EPSS Score (30 in total, the first dated here)
- Mar 9, 2026 Security Advisory (2 in total, the first dated here)
- Jul 26, 2026 Coalition ESS Score
- Sep 20, 2026 CVE Updated
Query this with the API
The same record, from the CLI:
vulnetix vdb vuln CVE-2021-37676
vulnetix vdb fixes CVE-2021-37676Or with curl, using the org id and key from your account page:
curl -s -H "Authorization: ApiKey ${VULNETIX_ORG_ID}:${VULNETIX_API_KEY}" \
"https://api.vdb.vulnetix.com/v2/vuln/CVE-2021-37676/fixes/registry"The Community plan is free and allows 50 queries a day. Get a free API key · API quickstart
References
- x_refsource_CONFIRM
- x_refsource_MISC
- https://nvd.nist.gov/vuln/detail/CVE-2021-37676 advisory
- https://github.com/advisories/GHSA-v768-w7m9-2vmm advisory
- https://github.com/pypa/advisory-database/tree/main/vulns/tensorflow-cpu/PYSEC-2021-589.yaml advisory
- https://github.com/pypa/advisory-database/tree/main/vulns/tensorflow-gpu/PYSEC-2021-787.yaml advisory
- https://github.com/pypa/advisory-database/tree/main/vulns/tensorflow/PYSEC-2021-298.yaml advisory
- https://github.com/tensorflow/tensorflow url