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He said vulnerable versions of the Motorola Android bootloader allow for a kernel command - line injection attack .
 He: discoverer; Motorola Android bootloader: vulnerable system; allow for a kernel command - line injection attack: capabilities; vulnerable versions: vulnerable system version
Given event type and trigger, please tell me the arguments of all the listed option. Output format is "name1: role1; name2: role2". 
Event type: discover vulnerability 
  Option: vulnerable system owner, vulnerability, capabilities, time, vulnerable system version, discoverer, common vulnerabilities and exposures, supported platform, vulnerable system 
Text: {0} 
Answer:
 He: discoverer; Motorola Android bootloader: vulnerable system; allow for a kernel command - line injection attack: capabilities; vulnerable versions: vulnerable system version