CVE-2020-15209: Null pointer dereference in tensorflow-lite

Description

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.

Affected products

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

tensorflow tensorflow

< 1.15.4affected
>= 2.0.0, < 2.0.3affected
>= 2.1.0, < 2.1.2affected
>= 2.2.0, < 2.2.1affected
>= 2.3.0, < 2.3.1affected

CVE-2020-15209

Null pointer dereference in tensorflow-lite

Description

Affected products

tensorflow tensorflow

References