cve.bz

CVE-2021-37643

7.1 highEPSS 0.2%

TensorFlow is an end-to-end open source platform for machine learning. If a user does not provide a valid padding value to `tf.raw_ops.MatrixDiagPartOp`, then the code triggers a null pointer dereference (if input is empty) or produces invalid behavior, ignoring all values after the first. The [implementation](https://github.com/tensorflow/tensorflow/blob/8d72537c6abf5a44103b57b9c2e22c14f5f49698/tensorflow/core/kernels/linalg/matrix_diag_op.cc#L89) reads the first value from a tensor buffer without first checking that the tensor has values to read from. We have patched the issue in GitHub commit 482da92095c4d48f8784b1f00dda4f81c28d2988. 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.

Severity

CVSS 3.1

7.1 high
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H
EPSS
0.2% chance of exploitation in the next 30 days; higher than 5% of CVEs (scores of 2026-10-31)
CWE
CWE-476
Published
Modified
Record from
the NVD, synced

Affected

Packages (OSV)

AdvisoryEcosystemPackageAffectedFixed in
GHSA-fcwc-p4fc-c5ccPyPItensorflow<2.3.42.3.4
GHSA-fcwc-p4fc-c5ccPyPItensorflow>=2.4.0 <2.4.32.4.3
GHSA-fcwc-p4fc-c5ccPyPItensorflow>=2.5.0 <2.5.12.5.1
GHSA-fcwc-p4fc-c5ccPyPItensorflow-cpu<2.3.42.3.4
GHSA-fcwc-p4fc-c5ccPyPItensorflow-cpu>=2.4.0 <2.4.32.4.3
GHSA-fcwc-p4fc-c5ccPyPItensorflow-cpu>=2.5.0 <2.5.12.5.1
GHSA-fcwc-p4fc-c5ccPyPItensorflow-gpu<2.3.42.3.4
GHSA-fcwc-p4fc-c5ccPyPItensorflow-gpu>=2.4.0 <2.4.32.4.3
GHSA-fcwc-p4fc-c5ccPyPItensorflow-gpu>=2.5.0 <2.5.12.5.1
PYSEC-2021-265PyPItensorflow>=2.3.0 <2.3.4
>=2.4.0 <2.4.3		2.3.4, 2.4.3
PYSEC-2021-556PyPItensorflow-cpu>=2.3.0 <2.3.4
>=2.4.0 <2.4.3		2.3.4, 2.4.3
PYSEC-2021-754PyPItensorflow-gpu>=2.3.0 <2.3.4
>=2.4.0 <2.4.3		2.3.4, 2.4.3

References

Check your stackJSON