CVE-2021-41206
Incomplete validation of shapes in multiple TF ops
Description
TensorFlow is an open source platform for machine learning. In affected versions several TensorFlow operations are missing validation for the shapes of the tensor arguments involved in the call. Depending on the API, this can result in undefined behavior and segfault or `CHECK`-fail related crashes but in some scenarios writes and reads from heap populated arrays are also possible. We have discovered these issues internally via tooling while working on improving/testing GPU op determinism. As such, we don't have reproducers and there will be multiple fixes for these issues. These fixes will be included in TensorFlow 2.7.0. We will also cherrypick these commits on TensorFlow 2.6.1, TensorFlow 2.5.2, and TensorFlow 2.4.4, as these are also affected and still in supported range.
How to fix CVE-2021-41206
To remediate CVE-2021-41206, upgrade the affected package to a fixed version below.
- —upgrade to 2.4.4 or later
- —upgrade to 2.6.1 or later
- —upgrade to 68422b215e618df5ad375bcdc6d2052e9fd3080a or later
- —upgrade to 68422b215e618df5ad375bcdc6d2052e9fd3080a or later
- —upgrade to 2.6.1 or later
- —upgrade to 68422b215e618df5ad375bcdc6d2052e9fd3080a or later
- —upgrade to 2.6.1 or later
Is CVE-2021-41206 being exploited?
Low — EPSS is 0.0%, meaning exploitation activity has not been observed at scale.
Affected packages (7)
- >= 2.4.0, < 2.4.4, >= 2.5.0, < 2.5.2, >= 2.6.0, < 2.6.1
- >= 2.6.0, < 2.6.1
- from 0, < 68422b215e618df5ad375bcdc6d2052e9fd3080a, < 4d74d8a00b07441cba090a02e0dd9ed385145bf4, < 579261dcd446385831fe4f7457d802a59685121d, < e7f497570abb6b4ae5af4970620cd880e4c0c904, < da4aad5946be30e5f049920fa076e1f7ef021261, < 4dddb2fd0b01cdd196101afbba6518658a2c9e07 | from 0, < 2.4.4, >= 2.5.0, < 2.5.2, >= 2.6.0, < 2.6.1
- from 0, < 68422b215e618df5ad375bcdc6d2052e9fd3080a, < 4d74d8a00b07441cba090a02e0dd9ed385145bf4, < 579261dcd446385831fe4f7457d802a59685121d, < e7f497570abb6b4ae5af4970620cd880e4c0c904, < da4aad5946be30e5f049920fa076e1f7ef021261, < 4dddb2fd0b01cdd196101afbba6518658a2c9e07 | from 0, < 2.4.4, >= 2.5.0, < 2.5.2, >= 2.6.0, < 2.6.1
- >= 2.6.0, < 2.6.1
- from 0, < 68422b215e618df5ad375bcdc6d2052e9fd3080a, < 4d74d8a00b07441cba090a02e0dd9ed385145bf4, < 579261dcd446385831fe4f7457d802a59685121d, < e7f497570abb6b4ae5af4970620cd880e4c0c904, < da4aad5946be30e5f049920fa076e1f7ef021261, < 4dddb2fd0b01cdd196101afbba6518658a2c9e07 | from 0, < 2.4.4, >= 2.5.0, < 2.5.2, >= 2.6.0, < 2.6.1
- >= 2.6.0, < 2.6.1
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 4.0 | — | CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N |
| osv | CVSS 3.1 | HIGH7.0 | CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H |