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netfilter: ipset: add the missing IP_SET_HASH_WITH_NET0 macro for ip_set_hash_netportnet.c
commit050d91c03b
upstream. The missing IP_SET_HASH_WITH_NET0 macro in ip_set_hash_netportnet can lead to the use of wrong `CIDR_POS(c)` for calculating array offsets, which can lead to integer underflow. As a result, it leads to slab out-of-bound access. This patch adds back the IP_SET_HASH_WITH_NET0 macro to ip_set_hash_netportnet to address the issue. Fixes:886503f34d
("netfilter: ipset: actually allow allowable CIDR 0 in hash:net,port,net") Suggested-by: Jozsef Kadlecsik <kadlec@netfilter.org> Signed-off-by: Kyle Zeng <zengyhkyle@gmail.com> Acked-by: Jozsef Kadlecsik <kadlec@netfilter.org> Signed-off-by: Florian Westphal <fw@strlen.de> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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@ -36,6 +36,7 @@ MODULE_ALIAS("ip_set_hash:net,port,net");
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#define IP_SET_HASH_WITH_PROTO
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#define IP_SET_HASH_WITH_NETS
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#define IPSET_NET_COUNT 2
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#define IP_SET_HASH_WITH_NET0
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/* IPv4 variant */
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