CVE-2019-16778

In TensorFlow before 1.15, a heap buffer overflow in UnsortedSegmentSum can be produced when the Index template argument is int32. In this case data_size and num_segments fields are truncated from int64 to int32 and can produce negative numbers, resulting in accessing out of bounds heap memory. This is unlikely to be exploitable and was detected and fixed internally in TensorFlow 1.15 and 2.0.

• CWE-122
• CWE-681

• https://github.com/tensorflow/tensorflow/blob/master/tensorflow/security/advisory/tfsa-2019-002.mdThird Party Advisory
• https://github.com/tensorflow/tensorflow/commit/db4f9717c41bccc3ce10099ab61996b246099892Patch
• https://github.com/tensorflow/tensorflow/security/advisories/GHSA-844w-j86r-4x2jPatch, Third Party Advisory
• https://github.com/tensorflow/tensorflow/blob/master/tensorflow/security/advisory/tfsa-2019-002.mdThird Party Advisory
• https://github.com/tensorflow/tensorflow/commit/db4f9717c41bccc3ce10099ab61996b246099892Patch
• https://github.com/tensorflow/tensorflow/security/advisories/GHSA-844w-j86r-4x2jPatch, Third Party Advisory

Published

Dec 16, 2019

Last Modified

Jun 17, 2026

Status

Modified

• How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
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