This and bug #530779 are fundamental due to Upstart's use of ptrace() for fork following - a rewrite of Upstart is in progress which uses other newer kernel mechanisms to follow forks and would not be vulnerable to this kind of issue. However there's no "quick fix" to it, and no way to backport that code.
This and bug #530779 are fundamental due to Upstart's use of ptrace() for fork following - a rewrite of Upstart is in progress which uses other newer kernel mechanisms to follow forks and would not be vulnerable to this kind of issue. However there's no "quick fix" to it, and no way to backport that code.