1621
Meanwhile , virtual private server provider Linode had to reboot some of its legacy Xen servers in order to apply the fix .
 the fix: patch; its legacy Xen servers: vulnerable system; virtual private server provider Linode: releaser
Given event type and trigger, please tell me the arguments of all the listed option. Output format is "name1: role1; name2: role2". 
Event type: patch vulnerability 
  Option: issues addressed, patch, vulnerability, time, vulnerable system version, releaser, patch number, common vulnerabilities and exposures, supported platform, vulnerable system 
Text: {0} 
Answer:
 the fix: patch; its legacy Xen servers: vulnerable system; virtual private server provider Linode: releaser