There was a memory alignment bug in the library
Gaim uses to access the Gadu-Gadu network.
This bug can not be exploited on x86 architectures.
This bug was recently fixed in the libgadu library,
but also needed to be fixed in Gaim because Gaim includes
a copy of the libgadu library.
A remote user could cause Gaim to crash on some
systems by sending the Gaim user a file whose filename
contains certain invalid characters.
It is unknown what combination of systems are affected,
but it is suspected that Windows users and systems with
older versions of GTK+ are especially susceptible.
A remote AIM or ICQ user can cause a buffer overflow
in Gaim by setting an away message containing many AIM
substitution strings (such as %t or %n).