Disclaimer: Community trackers are created by Red Hat Product Security team on a best effort basis. Package maintainers are required to ascertain if the flaw indeed affects their package, before starting the update process.
The upstream bug related to this issue is https://sourceware.org/bugzilla/show_bug.cgi?id=33700. The fix for this issue was entirely within binutils/readelf.c, which is not compiled into GDB. As such this issue does not impact GDB at all.