The check_permission_v1 function in base/pkit.py in HP Linux Imaging
and Printing (HPLIP) through 3.13.9 does not properly use D-Bus for
communication with a polkit authority, which allows local users to
bypass intended access restrictions by leveraging a PolkitUnixProcess
PolkitSubject race condition via a (1) setuid process or (2) pkexec
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