netfilter: ipset: Fix wraparound in hash:*net* types

netfilter: ipset: Fix wraparound in hash:*net* types

BugLink: https://bugs.launchpad.net/bugs/1811394
Fix wraparound bug which could lead to memory exhaustion when adding an
x.x.x.x-255.255.255.255 range to any hash:*net* types.

Fixes Netfilter's bugzilla id #1212, reported by Thomas Schwark.

Fixes: 48596a8ddc46 ("netfilter: ipset: Fix adding an IPv4 range containing more than 2^31 addresses")
Signed-off-by: Jozsef Kadlecsik <kadlec@blackhole.kfki.hu>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
(cherry picked from commit 0b8d9073539e217f79ec1bff65eb205ac796723d)
Signed-off-by: Kai-Heng Feng <kai.heng.feng@canonical.com>
Acked-by: Po-Hsu Lin <po-hsu.lin@canonical.com>
Acked-by: Stefan Bader <stefan.bader@canonical.com>
Signed-off-by: Khalid Elmously <khalid.elmously@canonical.com>