In tensorflow-lite before versions 1.15.4, 2.0.3, 2.1.2, 2.2.1 and 2.3.1, a crafted TFLite model can force a node to have as input a tensor backed by a `nullptr` buffer. This can be achieved by changing a buffer index in the flatbuffer serialization to convert a read-only tensor to a read-write one. The runtime assumes that these buffers are written to before a possible read, hence they are initialized with `nullptr`. However, by changing the buffer index for a tensor and implicitly converting that tensor to be a read-write one, as there is nothing in the model that writes to it, we get a null pointer dereference. The issue is patched in commit 0b5662bc, and is released in TensorFlow versions 1.15.4, 2.0.3, 2.1.2, 2.2.1, or 2.3.1.
History

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cve-icon MITRE

Status: PUBLISHED

Assigner: GitHub_M

Published: 2020-09-25T18:45:35

Updated: 2024-08-04T13:08:22.925Z

Reserved: 2020-06-25T00:00:00

Link: CVE-2020-15209

cve-icon Vulnrichment

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cve-icon NVD

Status : Analyzed

Published: 2020-09-25T19:15:16.213

Modified: 2021-09-16T15:45:25.820

Link: CVE-2020-15209

cve-icon Redhat

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