A null pointer dereference issue was discovered in 'FFmpeg' in decode_main_header() function of liba...

A null pointer dereference issue was discovered in 'FFmpeg' in decodemainheader() function of libavformat/nutdec.c file. The flaw occurs because the function lacks check of the return value of avformatnewstream() and triggers the null pointer dereference error, causing an application to crash.