Pidgin is a GTK Instant Messenger client for a variety of instant messaging protocols. libpurple is the core library for Pidgin.
A stack-based buffer overflow vulnerability has been found in the MXit protocol plug-in for libpurple.
A remote attacker could possibly execute arbitrary code with the privileges of the Pidgin process, or cause a Denial of Service condition.
There is no known workaround at this time.
All Pidgin users should upgrade to the latest version:
# emerge --sync
# emerge --ask --oneshot --verbose ">=net-im/pidgin-2.10.6"