[PATCH openEuler-1.0-LTS 0/3] fix NULL pointer dereference in __nf_nat_mangle_tcp_packet

When nf_nat_ipv4.ko is not loaded, l3proto is NULL pointer. If the csum_recalc function of l3proto is called, it will cause NULL pointer access issue.

Florian Westphal (2): netfilter: nat: remove csum_recalc hook netfilter: nat: fix udp checksum corruption

Zhengchao Shao (1): netfilter: nat: fix kabi change

include/net/netfilter/nf_nat_l3proto.h | 10 +++- net/ipv4/netfilter/nf_nat_l3proto_ipv4.c | 19 ------ net/ipv6/netfilter/nf_nat_l3proto_ipv6.c | 19 ------ net/netfilter/Makefile | 2 +- net/netfilter/nf_nat_helper.c | 12 ++-- net/netfilter/nf_nat_proto.c | 74 ++++++++++++++++++++++++ 6 files changed, 86 insertions(+), 50 deletions(-) create mode 100644 net/netfilter/nf_nat_proto.c