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Validate buffer index before accessing buffers vector #3535

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6 changes: 5 additions & 1 deletion tensorflow/lite/micro/micro_allocator.cc
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Original file line number Diff line number Diff line change
Expand Up @@ -203,7 +203,11 @@ void* GetFlatbufferTensorBuffer(
// First see if there's any buffer information in the serialized tensor.
// TODO(b/170379532): Add better unit tests to validate flatbuffer values.
void* out_buffer = nullptr;
if (auto* buffer = (*buffers)[flatbuffer_tensor.buffer()]) {
uint32_t buffer_index = flatbuffer_tensor.buffer();
if (buffer_index >= buffers->size()) {
return out_buffer;
}
if (auto* buffer = (*buffers)[buffer_index]) {
// If we've found a buffer, does it have any data?
if (auto* array = buffer->data()) {
// If it has any data, is the data size larger than zero?
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