This is a note to let you know that I've just added the patch titled sctp: set sin_port for addr param when checking duplicate address to the 4.10-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary The filename of the patch is: sctp-set-sin_port-for-addr-param-when-checking-duplicate-address.patch and it can be found in the queue-4.10 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable@xxxxxxxxxxxxxxx> know about it. >From foo@baz Sat Mar 18 22:03:53 CST 2017 From: Xin Long <lucien.xin@xxxxxxxxx> Date: Fri, 24 Feb 2017 15:18:46 +0800 Subject: sctp: set sin_port for addr param when checking duplicate address From: Xin Long <lucien.xin@xxxxxxxxx> [ Upstream commit 2e3ce5bc2aa938653c3866aa7f4901a1f199b1c8 ] Commit b8607805dd15 ("sctp: not copying duplicate addrs to the assoc's bind address list") tried to check for duplicate address before copying to asoc's bind_addr list from global addr list. But all the addrs' sin_ports in global addr list are 0 while the addrs' sin_ports are bp->port in asoc's bind_addr list. It means even if it's a duplicate address, af->cmp_addr will still return 0 as the their sin_ports are different. This patch is to fix it by setting the sin_port for addr param with bp->port before comparing the addrs. Fixes: b8607805dd15 ("sctp: not copying duplicate addrs to the assoc's bind address list") Reported-by: Wei Chen <weichen@xxxxxxxxxx> Signed-off-by: Xin Long <lucien.xin@xxxxxxxxx> Signed-off-by: David S. Miller <davem@xxxxxxxxxxxxx> Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx> --- net/sctp/protocol.c | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-) --- a/net/sctp/protocol.c +++ b/net/sctp/protocol.c @@ -199,6 +199,7 @@ int sctp_copy_local_addr_list(struct net sctp_scope_t scope, gfp_t gfp, int copy_flags) { struct sctp_sockaddr_entry *addr; + union sctp_addr laddr; int error = 0; rcu_read_lock(); @@ -220,7 +221,10 @@ int sctp_copy_local_addr_list(struct net !(copy_flags & SCTP_ADDR6_PEERSUPP))) continue; - if (sctp_bind_addr_state(bp, &addr->a) != -1) + laddr = addr->a; + /* also works for setting ipv6 address port */ + laddr.v4.sin_port = htons(bp->port); + if (sctp_bind_addr_state(bp, &laddr) != -1) continue; error = sctp_add_bind_addr(bp, &addr->a, sizeof(addr->a), Patches currently in stable-queue which might be from lucien.xin@xxxxxxxxx are queue-4.10/sctp-deny-peeloff-operation-on-asocs-with-threads-sleeping-on-it.patch queue-4.10/sctp-set-sin_port-for-addr-param-when-checking-duplicate-address.patch queue-4.10/ipv6-make-ecmp-route-replacement-less-greedy.patch