helvis -- arbitrary file deletion problem

The setuid root elvprsv utility, used to preserve
recovery helvis files, can be abused by local users to delete
with root privileges.
The problem is that elvprsv deletes files when it thinks they
have become corrupt. When elvprsv is pointed to a normal file then
it will almost always think the file is corrupt and deletes it.
This behavior may be exploited by local attackers to delete critical
files.