/usr/include/ql/models/shortrate/ is in libquantlib0-dev 1.7.1-1.
This file is owned by root:root, with mode 0o755.
..
/usr/include/ql/models/shortrate/all.hpp
/usr/include/ql/models/shortrate/calibrationhelpers/
/usr/include/ql/models/shortrate/calibrationhelpers/all.hpp
/usr/include/ql/models/shortrate/calibrationhelpers/caphelper.hpp
/usr/include/ql/models/shortrate/calibrationhelpers/swaptionhelper.hpp
/usr/include/ql/models/shortrate/onefactormodel.hpp
/usr/include/ql/models/shortrate/onefactormodels/
/usr/include/ql/models/shortrate/onefactormodels/all.hpp
/usr/include/ql/models/shortrate/onefactormodels/blackkarasinski.hpp
/usr/include/ql/models/shortrate/onefactormodels/coxingersollross.hpp
/usr/include/ql/models/shortrate/onefactormodels/extendedcoxingersollross.hpp
/usr/include/ql/models/shortrate/onefactormodels/gaussian1dmodel.hpp
/usr/include/ql/models/shortrate/onefactormodels/gsr.hpp
/usr/include/ql/models/shortrate/onefactormodels/hullwhite.hpp
/usr/include/ql/models/shortrate/onefactormodels/markovfunctional.hpp
/usr/include/ql/models/shortrate/onefactormodels/vasicek.hpp
/usr/include/ql/models/shortrate/twofactormodel.hpp
/usr/include/ql/models/shortrate/twofactormodels/
/usr/include/ql/models/shortrate/twofactormodels/all.hpp
/usr/include/ql/models/shortrate/twofactormodels/g2.hpp