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This issue is fixed in Red Hat Enterprise Linux version 7
Description of problem: functions selabel_lookup and selabel_lookup_raw Version-Release number of selected component (if applicable): libselinux-2.0.94-7.el6.x86_64 Steps to Reproduce: 1. Run this program: #include <stdio.h> #include <selinux/selinux.h> #include <selinux/label.h> int main (int argc, char **argv) { struct selabel_handle *hnd = selabel_open(SELABEL_CTX_FILE, NULL, 0); security_context_t selabel_context; // path == NULL selabel_lookup(hnd, &selabel_context, NULL, 0); freecon(selabel_context); selabel_close(hnd); } Actual results: Segmentation fault Expected results: errno == EINVAL Additional info: This bug is fixed in 7.3, upstream fix is here: https://github.com/SELinuxProject/selinux/commit/16a37c9f94c1e2dfb865e17e4200d2824d4971f5