netfilter: flowtable: fix IPv6 tunnel addr match
authorWill Mortensen <willmo@gmail.com>
Sun, 7 Nov 2021 01:28:21 +0000 (18:28 -0700)
committerPablo Neira Ayuso <pablo@netfilter.org>
Mon, 8 Nov 2021 11:14:05 +0000 (12:14 +0100)
Previously the IPv6 addresses in the key were clobbered and the mask was
left unset.

I haven't tested this; I noticed it while skimming the code to
understand an unrelated issue.

Fixes: cfab6dbd0ecf ("netfilter: flowtable: add tunnel match offload support")
Cc: wenxu <wenxu@ucloud.cn>
Signed-off-by: Will Mortensen <willmo@gmail.com>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
net/netfilter/nf_flow_table_offload.c

index d6bf1b2..b561e0a 100644 (file)
@@ -65,11 +65,11 @@ static void nf_flow_rule_lwt_match(struct nf_flow_match *match,
                       sizeof(struct in6_addr));
                if (memcmp(&key->enc_ipv6.src, &in6addr_any,
                           sizeof(struct in6_addr)))
-                       memset(&key->enc_ipv6.src, 0xff,
+                       memset(&mask->enc_ipv6.src, 0xff,
                               sizeof(struct in6_addr));
                if (memcmp(&key->enc_ipv6.dst, &in6addr_any,
                           sizeof(struct in6_addr)))
-                       memset(&key->enc_ipv6.dst, 0xff,
+                       memset(&mask->enc_ipv6.dst, 0xff,
                               sizeof(struct in6_addr));
                enc_keys |= BIT(FLOW_DISSECTOR_KEY_ENC_IPV6_ADDRS);
                key->enc_control.addr_type = FLOW_DISSECTOR_KEY_IPV6_ADDRS;