This is a note to let you know that I've just added the patch titled
mptcp: use OPTION_MPTCP_MPJ_SYNACK in subflow_finish_connect()
to the 6.1-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:
mptcp-use-option_mptcp_mpj_synack-in-subflow_finish_.patch
and it can be found in the queue-6.1 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit 7e7ff2237c0abea7770dd37861c7c612eab2ba44
Author: Eric Dumazet <edumazet@xxxxxxxxxx>
Date: Thu Jan 11 19:49:15 2024 +0000
mptcp: use OPTION_MPTCP_MPJ_SYNACK in subflow_finish_connect()
[ Upstream commit be1d9d9d38da922bd4beeec5b6dd821ff5a1dfeb ]
subflow_finish_connect() uses four fields (backup, join_id, thmac, none)
that may contain garbage unless OPTION_MPTCP_MPJ_SYNACK has been set
in mptcp_parse_option()
Fixes: f296234c98a8 ("mptcp: Add handling of incoming MP_JOIN requests")
Signed-off-by: Eric Dumazet <edumazet@xxxxxxxxxx>
Cc: Florian Westphal <fw@xxxxxxxxx>
Cc: Peter Krystad <peter.krystad@xxxxxxxxxxxxxxx>
Cc: Matthieu Baerts <matttbe@xxxxxxxxxx>
Cc: Mat Martineau <martineau@xxxxxxxxxx>
Cc: Geliang Tang <geliang.tang@xxxxxxxxx>
Reviewed-by: Simon Horman <horms@xxxxxxxxxx>
Acked-by: Paolo Abeni <pabeni@xxxxxxxxxx>
Reviewed-by: Mat Martineau <martineau@xxxxxxxxxx>
Link: https://lore.kernel.org/r/20240111194917.4044654-4-edumazet@xxxxxxxxxx
Signed-off-by: Jakub Kicinski <kuba@xxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/net/mptcp/subflow.c b/net/mptcp/subflow.c
index a7090922480e..caf7981fbee5 100644
--- a/net/mptcp/subflow.c
+++ b/net/mptcp/subflow.c
@@ -438,7 +438,7 @@ static void subflow_finish_connect(struct sock *sk, const struct sk_buff *skb)
} else if (subflow->request_join) {
u8 hmac[SHA256_DIGEST_SIZE];
- if (!(mp_opt.suboptions & OPTIONS_MPTCP_MPJ)) {
+ if (!(mp_opt.suboptions & OPTION_MPTCP_MPJ_SYNACK)) {
subflow->reset_reason = MPTCP_RST_EMPTCP;
goto do_reset;
}
