cron sys_admin

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I am seeing the cron daemon request capability sys_admin.  The below seems to 
indicate that vfork() is the relevant operation (190 seems to be vfork 
according to ia32entry.S).

So how does vfork() require sys_admin?

type=AVC msg=audit(1234433821.879:6677): avc:  denied  { sys_admin } for  
pid=9598 comm="cron" capability=21 
scontext=system_u:system_r:crond_t:s0-s0:c0.c1023 
tcontext=system_u:system_r:crond_t:s0-s0:c0.c1023 tclass=capability
type=SYSCALL msg=audit(1234433821.879:6677): arch=40000003 syscall=190 
success=yes exit=9600 a0=0 a1=804ca00 a2=257e a3=0 items=0 ppid=3701 pid=9598 
auid=4294967295 uid=0 gid=0 euid=0 suid=0 fsuid=0 egid=0 sgid=0 fsgid=0 
tty=(none) ses=4294967295 comm="cron" exe="/usr/sbin/cron" 
subj=system_u:system_r:crond_t:s0-s0:c0.c1023 key=(null)

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