A BBC news story says that NASA has confirmed that laptops on the ISS were infected with Gammima.AG. The story goes on to note that the laptops don't run AV. While the laptops aren't part of the core operating capability of the ISS, the fact that a virus did make it to the station shows that there are potential gaps in their information security coverage. It will be interesting to see where the virus came from when further analysis is done - the theory of a thumbdrive or other portable media carrying it is quite believable.
Creative Commons image courtesy of Flickr user Accidental Angel.