KernelTrap has a very interesting article about a recent attempt to sneak a "back door" into the Linux 2.6 kernel. Evidently someone managed to break into the CVS server that mirrors the kernel source tree and add a small patch allowing one to locally obtain "root" super-user access. Fortunately, during an export from the master BitKeeper version of the kernel source tree into the CVS mirror, the change was detected and quickly removed.
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