On 4/6/07, H. Peter Anvin <[email protected]> wrote:
Jan Engelhardt wrote:
> On Apr 6 2007 16:16, H. Peter Anvin wrote:
>>>> - users can use bind mounts without having to pre-configure them in
>>>> /etc/fstab
>>>>
>> This is by far the biggest concern I see. I think the security implication of
>> allowing anyone to do bind mounts are poorly understood.
>
> $ whoami
> miklos
> $ mount --bind / ~/down_under
>
> later that day:
> # userdel -r miklos
>
Consider backups, for example.
This is the reason why enforcing private namespaces for user mounts
makes sense. I think it catches many of these corner cases.
-eric
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