Simply because a couple of cardinals might have said something does not negate centuries of consistent moral teaching against a practice. Cardinals have been wrong before, and will be wrong on issues in the future, too. They do not carry anymore certainty of faith than any other bishop when it comes to infallibility - except the Bishop of Rome, and even then it is in very restricted situations.
They may be referring to a comment made by Pope Benedict XVI where he pointed out that use of condoms among male prostitutes to prevent the spread of AIDS may be the first actions of grace working in the person’s life because they are concerned about preventing the customers getting AIDS. But Pope Benedict was NOT saying that it is, therefore, okay to use a condom. What he was saying was that even though the male prostitute is sinning grievously by having sex outside marriage, by having sex with contraceptives, and by selling his body (all of which Pope Benedict would agree could send the man to Hell should he die in that state), the concern for the other person might be a faint spark of grace barely starting to turn the man in the general direction of an ultimate repentance and resulting state of grace - but definitely not a factor that legitimates all the evil that is being committed.
Some people in the media heard this and posted headlines saying “POPE OK’S CONDOM USE IN AIDS VICTIMS”. Whatever.
Pope Benedict is a theologian who is used to finer points of theology. This is a total hypothetical that really deserves no time on the front page at all. Rather, it is something for ivory tower theologians who spend their time thinking of rare and pointless situations where, practically speaking, no one really cares except them. Beyond that, unless a person is formally trained in theology and philosophy, they have a hard time debating this…let alone posting it on the front page of a secular newspaper. I’ve probably not done the Pope’s comments full justice, myself.