GHSA-XJVP-4FHW-GC47 runc: Malicious image with /dev symlink can trigger limited host filesystem integrity violations

Impact When setting up the container rootfs, setupPtmx and setupDevSymlinks call os.Remove and os.Symlink with a filepath.Join string which allow an image with /dev as a symlink to trick runc into deleting files called ptmx on the host or creating a hardcoded set of symlinks with specific names a...