c-blosc vulnerabilities (OSS-Fuzz)

2 vulnerabilities.

• c-blosc OSS-Fuzz Heap-buffer-overflow in blosclz_compress OSV-2021-1227 Fix available No scoreSeptember 11, 2021
• c-blosc OSS-Fuzz Heap-buffer-overflow in blosclz_compress OSV-2020-762 Fix available No scoreJuly 9, 2020