setuid files when executed inherit the permissions of the owner of the file. So having files with setuid of root is a bad idea.
Here's how to find it and unset it.
Note:
There are some system files like at and crontab that have these bits set and is required for it to run.
# find / -perm +6000 -type f -exec ls -ld {}\; > setuid.txt &To unset it:
# chmod a-s <file>Bookmark/Search this post with
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