A denial of service vulnerability exists in the handling of the MXIT protocol in Pidgin. Specially crafted MXIT data sent via the server could potentially result in a null pointer dereference. A malicious server or an attacker who intercepts the network traffic can send invalid data to trigger this vulnerability and cause a crash. External references: http://www.talosintel.com/reports/TALOS-2016-0133/ http://www.pidgin.im/news/security/?id=98 Upstream fix: https://bitbucket.org/pidgin/main/commits/5fa3f2bc69d7