/lib/modules/3.19.0-25-generic/vdso/ is in linux-image-3.19.0-25-generic 3.19.0-25.26~14.04.1.
This file is owned by root:root, with mode 0o755.
..
/lib/modules/3.19.0-25-generic/vdso/.build-id/
/lib/modules/3.19.0-25-generic/vdso/.build-id/01/
/lib/modules/3.19.0-25-generic/vdso/.build-id/01/005e92ea3c0c1527396b65c7412468298d0813.debug
/lib/modules/3.19.0-25-generic/vdso/.build-id/0f/
/lib/modules/3.19.0-25-generic/vdso/.build-id/0f/07f34952bd85628563099a3b282b0f50f1da10.debug
/lib/modules/3.19.0-25-generic/vdso/.build-id/82/
/lib/modules/3.19.0-25-generic/vdso/.build-id/82/3750531c418d6841727df8cc9c4d6917129a4f.debug
/lib/modules/3.19.0-25-generic/vdso/.build-id/ae/
/lib/modules/3.19.0-25-generic/vdso/.build-id/ae/04e3eeca21c3fee923d68f6219f4034639484a.debug
/lib/modules/3.19.0-25-generic/vdso/.build-id/c6/
/lib/modules/3.19.0-25-generic/vdso/.build-id/c6/1814fc7320b4f997d9f1cd233ba1fbe0863e42.debug
/lib/modules/3.19.0-25-generic/vdso/vdso32-int80.so
/lib/modules/3.19.0-25-generic/vdso/vdso32-syscall.so
/lib/modules/3.19.0-25-generic/vdso/vdso32-sysenter.so
/lib/modules/3.19.0-25-generic/vdso/vdso64.so
/lib/modules/3.19.0-25-generic/vdso/vdsox32.so