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SubjectRe: Grrrr fusermount.
On Wed, Oct 9, 2013 at 12:12 PM, Eric W. Biederman
<> wrote:
> (Eric W. Biederman) writes:
>> But I will go through and read the old fusermount code before I get too
>> much farther just so I understand what I am potentially breaking.
> Grr.
> So I have just read the fusermount umount code and the hack that it uses
> before there was UMOUNT_NOFOLLOW support in the vm.
> If I walk this path of lazy unmounts and detaching directories, anyone
> with a new kernel and an old copy of fusermount and a nfs mounted home
> directory will be able to exploit the fusermount umount symlink race.
> Unless we can declare that old fusermount binaries are buggy beyond
> supporting this patchset as it exists is dead.

What's the hack that it does?


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