crun is an open source OCI Container Runtime fully written in C. Prior to version 1.28, crun's default device setup opens the container rootfs "/dev" directory without "O_NOFOLLOW". If an OCI bundle contains "rootfs/dev" as a symlink and the bundle configuration does not mount "/dev", crun follows that symlink and creates the default device nodes and stdio symlinks at the symlink target outside the container rootfs. In a local rootful crun replay, this created fixed device nodes and symlinks outside the rootfs before crun returned failure. A pre-existing file named "ptmx" in the target directory was also replaced by crun's forced "ptmx -> pts/ptmx" symlink. Version 1.28 fixes the issue.