cve.bz

CVE-2021-29541

5.5 mediumEPSS 0.2%

Medium (5.5) in google tensorflow. EPSS 0.2% 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. An attacker can trigger a dereference of a null pointer in `tf.raw_ops.StringNGrams`. This is because the implementation(https://github.com/tensorflow/tensorflow/blob/1cdd4da14282210cc759e468d9781741ac7d01bf/tensorflow/core/kernels/string_ngrams_op.cc#L67-L74) does not fully validate the `data_splits` argument. This would result in `ngrams_data`(https://github.com/tensorflow/tensorflow/blob/1cdd4da14282210cc759e468d9781741ac7d01bf/tensorflow/core/kernels/string_ngrams_op.cc#L106-L110) to be a null pointer when the output would be computed to have 0 or negative size. Later writes to the output tensor would then cause a null pointer dereference. 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.

Severity

CVSS 3.1

5.5 medium
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
EPSS
0.2% chance of exploitation in the next 30 days; higher than 8% of CVEs (scores of 2026-10-31)
CWE
CWE-476
Published
Modified
Record from
the NVD, synced

Affected

Packages (OSV)

AdvisoryEcosystemPackageAffectedFixed in
GHSA-xqfj-35wv-m3crPyPItensorflow<2.1.42.1.4
GHSA-xqfj-35wv-m3crPyPItensorflow>=2.2.0 <2.2.32.2.3
GHSA-xqfj-35wv-m3crPyPItensorflow>=2.3.0 <2.3.32.3.3
GHSA-xqfj-35wv-m3crPyPItensorflow>=2.4.0 <2.4.22.4.2
GHSA-xqfj-35wv-m3crPyPItensorflow-cpu<2.1.42.1.4
GHSA-xqfj-35wv-m3crPyPItensorflow-cpu>=2.2.0 <2.2.32.2.3
GHSA-xqfj-35wv-m3crPyPItensorflow-cpu>=2.3.0 <2.3.32.3.3
GHSA-xqfj-35wv-m3crPyPItensorflow-cpu>=2.4.0 <2.4.22.4.2
GHSA-xqfj-35wv-m3crPyPItensorflow-gpu<2.1.42.1.4
GHSA-xqfj-35wv-m3crPyPItensorflow-gpu>=2.2.0 <2.2.32.2.3
GHSA-xqfj-35wv-m3crPyPItensorflow-gpu>=2.3.0 <2.3.32.3.3
GHSA-xqfj-35wv-m3crPyPItensorflow-gpu>=2.4.0 <2.4.22.4.2
PYSEC-2021-178PyPItensorflow<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-2021-469PyPItensorflow-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-2021-667PyPItensorflow-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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