The VStr::Resize function in str.cpp in Vavoom 1.24 and earlier allows remote attackers to cause a denial of service (daemon crash) via a string with a negative NewLen value within a certain UDP packet that triggers an assertion error.
https://www.redhat.com/archives/fedora-package-announce/2007-September/msg00094.html
https://bugzilla.redhat.com/show_bug.cgi?id=256621
http://www.securityfocus.com/bid/25436
http://securityreason.com/securityalert/3057
http://secunia.com/advisories/26701