This bug report has Keywords: Regression or TestBlocker.
Since no regressions or test blockers are allowed between releases, it is also being identified as a blocker for this release. Please resolve ASAP.
According to package manifest, it seems like RHVH already contains libvirt-3.9.0-14.el7_5.3, which fixes the bz#1564996.
libvirt-daemon-kvm >= 3.9.0-14.el7_5.5
kernel >= 3.10.0-862.3.2.el7
qemu-kvm-rhev >= 10:2.10.0-21.el7_5.3
This bugzilla is included in oVirt 4.2.4 release, published on June 26th 2018.
Since the problem described in this bug report should be
resolved in oVirt 4.2.4 release, it has been closed with a resolution of CURRENT RELEASE.
If the solution does not work for you, please open a new bug report.