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c3345c58a4
If a userlevel or userrange statement is missing from a policy, evaluate_level_expression() and evaluate_levelrange_expression, respectively will have a NULL pointer dereference caused by a missing level in a user. Add cil_pre_verify() which verifies users have a valid level. Also, move loop checking in classpermissions into cil_pre_verify(). This fixes https://github.com/SELinuxProject/cil/issues/1. Signed-off-by: Yuli Khodorkovskiy <ykhodorkovskiy@tresys.com>
Please submit all bug reports and patches to selinux@tycho.nsa.gov. Subscribe via selinux-join@tycho.nsa.gov. Build dependencies on Fedora: yum install audit-libs-devel bison bzip2-devel dbus-devel dbus-glib-devel flex flex-devel flex-static glib2-devel libcap-devel libcap-ng-devel pam-devel pcre-devel python-devel setools-devel swig ustr-devel To build and install everything under a private directory, run: make DESTDIR=~/obj install install-pywrap To install as the default system libraries and binaries (overwriting any previously installed ones - dangerous!), on x86_64, run: make LIBDIR=/usr/lib64 SHLIBDIR=/lib64 install install-pywrap relabel or on x86 (32-bit), run: make install install-pywrap relabel This may render your system unusable if the upstream SELinux userspace lacks library functions or other dependencies relied upon by your distribution. If it breaks, you get to keep both pieces.