VServer versions 1.27 and below (Linux 2.4 stable branch), 1.3.9 and below (Linux 2.4 devel branch), and 1.9.1 and below (Linux 2.6 devel branch) all allow for modifications to the proc filesystem that inadvertently propagate to the real underlying OS.
VServer versions 1.27 and below (Linux 2.4 stable branch), 1.3.9 and below (Linux 2.4 devel branch), and 1.9.1 and below (Linux 2.6 devel branch) all allow for modifications to the proc filesystem that inadvertently propagate to the real underlying OS.