He is due to go back with Newcastle after the Bristol City fixture ... so he will be available for Ipswich on Saturday, plus the West Ham and Brighton games.
He is ineligible for the Carling Cup final against Liverpool having played in an earlier round for Newcastle.
Haris Vuckic: "If the club's get an agreement to extend, that would be great.
"I really want to play. I know Newcastle is my first team but if I get chance to play for Cardiff on loan until the end of the season that would be great.
"I've found it [the Championship] a little bit harder than the Premier League.
"In the Premier League I had more time. Here they tackle you straight away.
"You have to switch on and the mentality is totally different. Everybody works hard. It's harder but I will get used to it.
"After the Leicester game we had a meeting and we went through what we did wrong and what we did right.
"The confidence was quite low. We really wanted to win this game so we really push on.
"We deserved to win. We pressured them straight away. We won all the tackles and we had more chances than them and scored three goals.
"I was really happy to score the goal and [to] help the team [get] the win. But the most important [thing] is the team's doing well.
"I played against Scunthorpe in the Carling Cup so I can't play unfortunately. That's football. Sometimes you can play, sometimes you can't.
"But I will be in the stadium [to] support my team-mates and hopefully we will win the Carling Cup."