cve.bz

CVE-2021-41201

7.8 highEPSS 0.2%

High (7.8) in google tensorflow. EPSS 0.2% chance of exploitation in the next 30 days. Fixed in tensorflow 2.4.4, 2.5.2, 2.6.1.

TensorFlow is an open source platform for machine learning. In affeced versions during execution, `EinsumHelper::ParseEquation()` is supposed to set the flags in `input_has_ellipsis` vector and `*output_has_ellipsis` boolean to indicate whether there is ellipsis in the corresponding inputs and output. However, the code only changes these flags to `true` and never assigns `false`. This results in unitialized variable access if callers assume that `EinsumHelper::ParseEquation()` always sets these flags. The fix will be included in TensorFlow 2.7.0. We will also cherrypick this commit on TensorFlow 2.6.1, TensorFlow 2.5.2, and TensorFlow 2.4.4, as these are also affected and still in supported range.

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
0.2% chance of exploitation in the next 30 days; higher than 16% of CVEs (scores of 2026-10-31)
CWE
CWE-824
Published
Modified
Record from
the NVD, synced

Affected

Packages (OSV)

AdvisoryEcosystemPackageAffectedFixed in
GHSA-j86v-p27c-73fmPyPItensorflow>=2.6.0 <2.6.12.6.1
GHSA-j86v-p27c-73fmPyPItensorflow>=2.5.0 <2.5.22.5.2
GHSA-j86v-p27c-73fmPyPItensorflow<2.4.42.4.4
GHSA-j86v-p27c-73fmPyPItensorflow-cpu>=2.6.0 <2.6.12.6.1
GHSA-j86v-p27c-73fmPyPItensorflow-cpu>=2.5.0 <2.5.22.5.2
GHSA-j86v-p27c-73fmPyPItensorflow-cpu<2.4.42.4.4
GHSA-j86v-p27c-73fmPyPItensorflow-gpu>=2.6.0 <2.6.12.6.1
GHSA-j86v-p27c-73fmPyPItensorflow-gpu>=2.5.0 <2.5.22.5.2
GHSA-j86v-p27c-73fmPyPItensorflow-gpu<2.4.42.4.4
PYSEC-2021-394PyPItensorflow<2.4.4
>=2.5.0 <2.5.2
>=2.6.0 <2.6.1
>=2.7.0rc0 <2.7.0		2.4.4, 2.5.2, 2.6.1, 2.7.0
PYSEC-2021-611PyPItensorflow-cpu<2.4.4
>=2.5.0 <2.5.2
>=2.6.0 <2.6.1
>=2.7.0rc0 <2.7.0		2.4.4, 2.5.2, 2.6.1, 2.7.0
PYSEC-2021-809PyPItensorflow-gpu<2.4.4
>=2.5.0 <2.5.2
>=2.6.0 <2.6.1
>=2.7.0rc0 <2.7.0		2.4.4, 2.5.2, 2.6.1, 2.7.0

References

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