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| author | Zhiling Zou <roxy520tt@gmail.com> | 2026-07-15 09:50:11 +0800 |
|---|---|---|
| committer | Jakub Kicinski <kuba@kernel.org> | 2026-07-21 14:03:32 -0700 |
| commit | ffb2bd7ade36ec4da32c46a6eddbf4515316d08c (patch) | |
| tree | 5614da67fca4ba0abe36da4af19eed6e039f6da0 /net | |
| parent | f8d5e7846025f4ab15a461235f8ebae9094a361a (diff) | |
| download | linux-ffb2bd7ade36ec4da32c46a6eddbf4515316d08c.tar.gz linux-ffb2bd7ade36ec4da32c46a6eddbf4515316d08c.tar.bz2 linux-ffb2bd7ade36ec4da32c46a6eddbf4515316d08c.zip | |
sctp: close UDP tunnel sockets during netns teardown
proc_sctp_do_udp_port() starts per-net SCTP UDP tunneling sockets when
net.sctp.udp_port is set, and stops/restarts them when the sysctl value
changes. The netns exit path does not stop these sockets, so a namespace
can be torn down while its SCTP UDP tunnel sockets are still installed.
Close the UDP tunnel sockets from sctp_ctrlsock_exit() after unregistering
the per-net sysctl table. This prevents new sysctl writes from racing in
while the sockets are being released, and closes the sockets before the
control socket is destroyed.
Fixes: 046c052b475e ("sctp: enable udp tunneling socks")
Cc: stable@vger.kernel.org
Reported-by: Sashiko <sashiko-bot@kernel.org>
Closes: https://sashiko.dev/#/patchset/b9f1f02b0780ad6a719e2413f5f0bb8eb7702d94.1782585631.git.roxy520tt%40gmail.com
Signed-off-by: Zhiling Zou <roxy520tt@gmail.com>
Signed-off-by: Ren Wei <n05ec@lzu.edu.cn>
Acked-by: Xin Long <lucien.xin@gmail.com>
Link: https://patch.msgid.link/6dab75f22855cb219e2e30a5497cab03b970ab91.1784033357.git.roxy520tt@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Diffstat (limited to 'net')
| -rw-r--r-- | net/sctp/protocol.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/net/sctp/protocol.c b/net/sctp/protocol.c index 49d9740b1e0f..27c26e12f95d 100644 --- a/net/sctp/protocol.c +++ b/net/sctp/protocol.c @@ -1460,6 +1460,7 @@ static int __net_init sctp_ctrlsock_init(struct net *net) static void __net_exit sctp_ctrlsock_exit(struct net *net) { sctp_sysctl_net_unregister(net); + sctp_udp_sock_stop(net); /* Free the control endpoint. */ inet_ctl_sock_destroy(net->sctp.ctl_sock); |