The package now in RHEL7 is based on hostap 2.0, released in Jan 2013 .
A rebase to a more recent version like 2.6 (October 2016) would allow an easier backport of new features as the MACsec support needed for bug 1338005 and would also bring to RHEL all the improvements done in the last 4 years.
Tested against RHEL-7.4-20170525.7 and verified that wpa_supplicant-2.6-5.el7 is installed. Also checked the source rpm package and verified that the patches look correct according to comment 2 and comment 3. General wpa_supplicant testing has not shown any issues either. Verifying as SanityOnly.
Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.
For information on the advisory, and where to find the updated
files, follow the link below.
If the solution does not work for you, open a new bug report.