A local non-root user with access to the D-Bus system bus can call the
CheckConfig method implemented in the tcmu-runner daemon via
handler_glfs.so and cause various kinds of segmentation faults,
depending on the string passed to the method.
For example the "hosts" variable in glfs_check_config() is not zero
initialized, but always freed on error, causing invalid free and/or
invalid memory accesses.
Created tcmu-runner tracking bugs for this issue:
Affects: fedora-all [bug 1487255]
This issue has been addressed in the following products:
Red Hat Gluster Storage 3.3 for RHEL 7
Via RHSA-2017:3277 https://access.redhat.com/errata/RHSA-2017:3277