cve.bz

CVE-2021-29591

7.8 highEPSS 0.3%

High (7.8) in google tensorflow. EPSS 0.3% chance of exploitation in the next 30 days. Fixed in tensorflow 2.1.4, 2.2.3, 2.3.3.

TensorFlow is an end-to-end open source platform for machine learning. TFlite graphs must not have loops between nodes. However, this condition was not checked and an attacker could craft models that would result in infinite loop during evaluation. In certain cases, the infinite loop would be replaced by stack overflow due to too many recursive calls. For example, the `While` implementation(https://github.com/tensorflow/tensorflow/blob/106d8f4fb89335a2c52d7c895b7a7485465ca8d9/tensorflow/lite/kernels/while.cc) could be tricked into a scneario where both the body and the loop subgraphs are the same. Evaluating one of the subgraphs means calling the `Eval` function for the other and this quickly exhaust all stack space. The fix will be included in TensorFlow 2.5.0. We will also cherrypick this commit on TensorFlow 2.4.2, TensorFlow 2.3.3, TensorFlow 2.2.3 and TensorFlow 2.1.4, as these are also affected and still in supported range. 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.

Severity

CVSS 3.1

7.8 high
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
EPSS
0.3% chance of exploitation in the next 30 days; higher than 18% of CVEs (scores of 2026-10-31)
CWEs
CWE-674, CWE-835
Published
Modified
Record from
the NVD, synced

Affected

Packages (OSV)

AdvisoryEcosystemPackageAffectedFixed in
GHSA-cwv3-863g-39vxPyPItensorflow<2.1.42.1.4
GHSA-cwv3-863g-39vxPyPItensorflow>=2.2.0 <2.2.32.2.3
GHSA-cwv3-863g-39vxPyPItensorflow>=2.3.0 <2.3.32.3.3
GHSA-cwv3-863g-39vxPyPItensorflow>=2.4.0 <2.4.22.4.2
GHSA-cwv3-863g-39vxPyPItensorflow-cpu<2.1.42.1.4
GHSA-cwv3-863g-39vxPyPItensorflow-cpu>=2.2.0 <2.2.32.2.3
GHSA-cwv3-863g-39vxPyPItensorflow-cpu>=2.3.0 <2.3.32.3.3
GHSA-cwv3-863g-39vxPyPItensorflow-cpu>=2.4.0 <2.4.22.4.2
GHSA-cwv3-863g-39vxPyPItensorflow-gpu<2.1.42.1.4
GHSA-cwv3-863g-39vxPyPItensorflow-gpu>=2.2.0 <2.2.32.2.3
GHSA-cwv3-863g-39vxPyPItensorflow-gpu>=2.3.0 <2.3.32.3.3
GHSA-cwv3-863g-39vxPyPItensorflow-gpu>=2.4.0 <2.4.22.4.2
PYSEC-2021-228PyPItensorflow<2.1.4
>=2.2.0 <2.2.3
>=2.3.0 <2.3.3
>=2.4.0 <2.4.2		2.1.4, 2.2.3, 2.3.3, 2.4.2
PYSEC-2021-519PyPItensorflow-cpu<2.1.4
>=2.2.0 <2.2.3
>=2.3.0 <2.3.3
>=2.4.0 <2.4.2		2.1.4, 2.2.3, 2.3.3, 2.4.2
PYSEC-2021-717PyPItensorflow-gpu<2.1.4
>=2.2.0 <2.2.3
>=2.3.0 <2.3.3
>=2.4.0 <2.4.2		2.1.4, 2.2.3, 2.3.3, 2.4.2

References

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