/lib/modules/4.2.0-23-lowlatency/vdso/ is in linux-image-4.2.0-23-lowlatency 4.2.0-23.28~14.04.1.
This file is owned by root:root, with mode 0o755.
..
/lib/modules/4.2.0-23-lowlatency/vdso/.build-id/
/lib/modules/4.2.0-23-lowlatency/vdso/.build-id/14/
/lib/modules/4.2.0-23-lowlatency/vdso/.build-id/14/b12923c1f4711a1ed232c86415671bea24d651.debug
/lib/modules/4.2.0-23-lowlatency/vdso/.build-id/24/
/lib/modules/4.2.0-23-lowlatency/vdso/.build-id/24/dcde3f0de15360b610939eaccc7a1e8ddd38e9.debug
/lib/modules/4.2.0-23-lowlatency/vdso/.build-id/42/
/lib/modules/4.2.0-23-lowlatency/vdso/.build-id/42/b448787f2ec23b45c433d9a11b002e9d67aa2c.debug
/lib/modules/4.2.0-23-lowlatency/vdso/.build-id/78/
/lib/modules/4.2.0-23-lowlatency/vdso/.build-id/78/babc9cf0e181efbcb0457e4d99005d6d7bbfc8.debug
/lib/modules/4.2.0-23-lowlatency/vdso/.build-id/78/c7c424502be61c3e373b37f03f223db5ca5ffd.debug
/lib/modules/4.2.0-23-lowlatency/vdso/vdso32-int80.so
/lib/modules/4.2.0-23-lowlatency/vdso/vdso32-syscall.so
/lib/modules/4.2.0-23-lowlatency/vdso/vdso32-sysenter.so
/lib/modules/4.2.0-23-lowlatency/vdso/vdso64.so
/lib/modules/4.2.0-23-lowlatency/vdso/vdsox32.so