Tell me if I'm wrong, but aren't those bugs all of the "put some wild stuff
into /tmp and let it be overwritten" variety?
It seems to me that most (if not all) of these holes can be fixed by
(a) setting the t bit on /tmp and (b) patching the kernel not to follow
symlinks which are stored in a directory with the t bit set.
There's even a patch for (b) floating around.
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