libpng vulnerabilities (OSS-Fuzz)

2 vulnerabilities.

• libpng OSS-Fuzz Heap-buffer-overflow in OSS_FUZZ_png_combine_row OSV-2017-67 Fix available No scoreJanuary 13, 2021
• libpng OSS-Fuzz Heap-buffer-overflow in OSS_FUZZ_png_combine_row OSV-2017-41 Fix available No scoreJanuary 13, 2021