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| author | Madhu Koriginja <madhu.koriginja@nxp.com> | 2023-03-21 21:28:44 +0530 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2023-05-11 23:03:18 +0900 |
| commit | 2361aee1c52cf237a9d85ad9e2625fb8a473a4ff (patch) | |
| tree | c3dd53a60384530d8d0efb961f9737d6f1d3b09d /net | |
| parent | 8d05f25475a25719c6592bde3ee1245a860d1769 (diff) | |
| download | linux-stable-2361aee1c52cf237a9d85ad9e2625fb8a473a4ff.tar.gz linux-stable-2361aee1c52cf237a9d85ad9e2625fb8a473a4ff.tar.bz2 linux-stable-2361aee1c52cf237a9d85ad9e2625fb8a473a4ff.zip | |
netfilter: keep conntrack reference until IPsecv6 policy checks are done
[ Upstream commit b0e214d212030fe497d4d150bb3474e50ad5d093 ]
Keep the conntrack reference until policy checks have been performed for
IPsec V6 NAT support, just like ipv4.
The reference needs to be dropped before a packet is
queued to avoid having the conntrack module unloadable.
Fixes: 58a317f1061c ("netfilter: ipv6: add IPv6 NAT support")
Signed-off-by: Madhu Koriginja <madhu.koriginja@nxp.com>
Signed-off-by: Florian Westphal <fw@strlen.de>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'net')
| -rw-r--r-- | net/dccp/ipv6.c | 1 | ||||
| -rw-r--r-- | net/ipv6/ip6_input.c | 14 | ||||
| -rw-r--r-- | net/ipv6/raw.c | 5 | ||||
| -rw-r--r-- | net/ipv6/tcp_ipv6.c | 2 | ||||
| -rw-r--r-- | net/ipv6/udp.c | 2 |
5 files changed, 13 insertions, 11 deletions
diff --git a/net/dccp/ipv6.c b/net/dccp/ipv6.c index b9d7c3dd1cb3..c0fd8f5f3b94 100644 --- a/net/dccp/ipv6.c +++ b/net/dccp/ipv6.c @@ -783,6 +783,7 @@ lookup: if (!xfrm6_policy_check(sk, XFRM_POLICY_IN, skb)) goto discard_and_relse; + nf_reset_ct(skb); return __sk_receive_skb(sk, skb, 1, dh->dccph_doff * 4, refcounted) ? -1 : 0; diff --git a/net/ipv6/ip6_input.c b/net/ipv6/ip6_input.c index e1ebf5e42ebe..d94041bb4287 100644 --- a/net/ipv6/ip6_input.c +++ b/net/ipv6/ip6_input.c @@ -404,10 +404,6 @@ resubmit_final: /* Only do this once for first final protocol */ have_final = true; - /* Free reference early: we don't need it any more, - and it may hold ip_conntrack module loaded - indefinitely. */ - nf_reset_ct(skb); skb_postpull_rcsum(skb, skb_network_header(skb), skb_network_header_len(skb)); @@ -430,10 +426,12 @@ resubmit_final: goto discard; } } - if (!(ipprot->flags & INET6_PROTO_NOPOLICY) && - !xfrm6_policy_check(NULL, XFRM_POLICY_IN, skb)) { - SKB_DR_SET(reason, XFRM_POLICY); - goto discard; + if (!(ipprot->flags & INET6_PROTO_NOPOLICY)) { + if (!xfrm6_policy_check(NULL, XFRM_POLICY_IN, skb)) { + SKB_DR_SET(reason, XFRM_POLICY); + goto discard; + } + nf_reset_ct(skb); } ret = INDIRECT_CALL_2(ipprot->handler, tcp_v6_rcv, udpv6_rcv, diff --git a/net/ipv6/raw.c b/net/ipv6/raw.c index 4fc511bdf176..f44b99f7ecdc 100644 --- a/net/ipv6/raw.c +++ b/net/ipv6/raw.c @@ -193,10 +193,8 @@ static bool ipv6_raw_deliver(struct sk_buff *skb, int nexthdr) struct sk_buff *clone = skb_clone(skb, GFP_ATOMIC); /* Not releasing hash table! */ - if (clone) { - nf_reset_ct(clone); + if (clone) rawv6_rcv(sk, clone); - } } } rcu_read_unlock(); @@ -387,6 +385,7 @@ int rawv6_rcv(struct sock *sk, struct sk_buff *skb) kfree_skb(skb); return NET_RX_DROP; } + nf_reset_ct(skb); if (!rp->checksum) skb->ip_summed = CHECKSUM_UNNECESSARY; diff --git a/net/ipv6/tcp_ipv6.c b/net/ipv6/tcp_ipv6.c index 81afb40bfc0b..c563a84d67b4 100644 --- a/net/ipv6/tcp_ipv6.c +++ b/net/ipv6/tcp_ipv6.c @@ -1722,6 +1722,8 @@ process: if (drop_reason) goto discard_and_relse; + nf_reset_ct(skb); + if (tcp_filter(sk, skb)) { drop_reason = SKB_DROP_REASON_SOCKET_FILTER; goto discard_and_relse; diff --git a/net/ipv6/udp.c b/net/ipv6/udp.c index 0b8127988adb..c029222ce46b 100644 --- a/net/ipv6/udp.c +++ b/net/ipv6/udp.c @@ -701,6 +701,7 @@ static int udpv6_queue_rcv_one_skb(struct sock *sk, struct sk_buff *skb) drop_reason = SKB_DROP_REASON_XFRM_POLICY; goto drop; } + nf_reset_ct(skb); if (static_branch_unlikely(&udpv6_encap_needed_key) && up->encap_type) { int (*encap_rcv)(struct sock *sk, struct sk_buff *skb); @@ -1024,6 +1025,7 @@ int __udp6_lib_rcv(struct sk_buff *skb, struct udp_table *udptable, if (!xfrm6_policy_check(NULL, XFRM_POLICY_IN, skb)) goto discard; + nf_reset_ct(skb); if (udp_lib_checksum_complete(skb)) goto csum_error; |