Re: CLONE_PID (was Re: Potential Threads security bug with LinuxThreads)

Jamie Lokier (lkd@tantalophile.demon.co.uk)
Thu, 27 Aug 1998 01:38:19 +0100

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On Wed, Aug 26, 1998 at 11:08:41AM +0200, Andi Kleen wrote:
> Another thing it should do is to broadcast all uid/gid/euid etc. changes
> to all other threads that share the pid. Currently Linux has "per thread
> permissions", that differs from all other Unixes I know and it is a
> potential security problem.

I was about to suggest CLONE_UID. However.

Sometimes per thread permissions are exceedingly useful.
But probably not between threads that share a signal queue.

-- Jamie

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