func: int CVE_2013_7023_PATCHED_ff_combine_frame(ParseContext *pc, int next, const uint8_t **buf, int *buf_size) for(; pc->overread>0; pc->overread--) pc -> buffer [ pc -> index ++ ] = pc -> buffer [ pc -> overread_index ++ ]; if ( ! * buf_size && next == END_NOT_FOUND )  next = 0; pc -> last_index = pc -> index; if ( next == END_NOT_FOUND )  void * new_buffer = av_fast_realloc ( pc -> buffer , & pc -> buffer_size , ( * buf_size ) + pc -> index + FF_INPUT_BUFFER_PADDING_SIZE ) ; if ( ! new_buffer )  pc -> buffer = new_buffer; memcpy ( & pc -> buffer [ pc -> index ] , * buf , * buf_size ); pc -> index += * buf_size; 