Hello,
The download link for cuDNN - CUDA 8.0 (Jan 20, 2017) is currently serving cuDNN v5.1.5 rather than v5.1.10:
https://developer.nvidia.com/compute/machine-learning/cudnn/secure/v5.1/prod/8.0/cudnn-8.0-linux-x64-v5.1-tgz
The download link for cuDNN - CUDA 7.5 is serving the correct version:
https://developer.nvidia.com/compute/machine-learning/cudnn/secure/v5.1/prod_20161129/7.5/cudnn-7.5-linux-x64-v5.1-tgz
Cheers,
marco