In the Linux kernel, the following vulnerability has been resolved:
netfilter: nf_nat: unregister and release hooks on error
If nf_hook_entries_insert_raw() fails, the NAT hooks get never released,
resulting in a memleak.
Postpone setting nat_proto_net->nat_hook_ops when the hooks are
registered to simplify the error path to decide whether the nat hooks
need unwinding.
References 3
https://git.kernel.org/stable/c/79084567cd082fb4482e1ea457580e7d6504dd99
416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/cbdd39ce42530a193c56beb206a3356cb6d01016
416baaa9-dc9f-4396-8d5f-8c081fb06d67
https://git.kernel.org/stable/c/df80342f4bfc023ad7d6703df5e27f583ff0cb8d
416baaa9-dc9f-4396-8d5f-8c081fb06d67