List of those Vulnerable available here
Systems with System V shared memory capabilities appear to have a problem wherein a local user can leverage read and write access to any shared memory segment. Potential risk is leveraging privileges. From what I can Tell this is only a local exploit, but it could be bad.
Brief description is taken from and available here
Solution information is available here
For those of you running *nix systems wherein multiple users have access your machines, get your systems patched.