chm2pdf 0.9 uses temporary files in directories with fixed names, which allows local users to cause a denial of service (chm2pdf failure) of other users by creating those directories ahead of time.
https://exchange.xforce.ibmcloud.com/vulnerabilities/47030
https://exchange.xforce.ibmcloud.com/vulnerabilities/45813
http://www.vupen.com/english/advisories/2011/0236
http://www.securityfocus.com/bid/31735
http://secunia.com/advisories/43109
http://secunia.com/advisories/32257
http://lists.fedoraproject.org/pipermail/package-announce/2011-January/053510.html
http://lists.fedoraproject.org/pipermail/package-announce/2011-January/053501.html