libpurple/protocols/yahoo/libymsg.c in Pidgin before 2.10.8 allows remote attackers to cause a denial of service (crash) via a Yahoo! P2P message with a crafted length field, which triggers a buffer over-read.
https://rhn.redhat.com/errata/RHSA-2014-0139.html
http://www.ubuntu.com/usn/USN-2100-1
http://www.pidgin.im/news/security/?id=74
http://www.debian.org/security/2014/dsa-2859
http://lists.opensuse.org/opensuse-updates/2014-03/msg00005.html
http://lists.opensuse.org/opensuse-updates/2014-02/msg00039.html