This is a note to let you know that I've just added the patch titled mptcp: add validity check for sending RM_ADDR to the 6.6-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-add-validity-check-for-sending-rm_addr.patch and it can be found in the queue-6.6 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable@xxxxxxxxxxxxxxx> know about it. >From 8df220b29282e8b450ea57be62e1eccd4996837c Mon Sep 17 00:00:00 2001 From: Geliang Tang <geliang.tang@xxxxxxxx> Date: Tue, 14 Nov 2023 00:16:15 +0100 Subject: mptcp: add validity check for sending RM_ADDR From: Geliang Tang <geliang.tang@xxxxxxxx> commit 8df220b29282e8b450ea57be62e1eccd4996837c upstream. This patch adds the validity check for sending RM_ADDRs for userspace PM in mptcp_pm_remove_addrs(), only send a RM_ADDR when the address is in the anno_list or conn_list. Fixes: 8b1c94da1e48 ("mptcp: only send RM_ADDR in nl_cmd_remove") Cc: stable@xxxxxxxxxxxxxxx Signed-off-by: Geliang Tang <geliang.tang@xxxxxxxx> Reviewed-by: Mat Martineau <martineau@xxxxxxxxxx> Signed-off-by: Matthieu Baerts <matttbe@xxxxxxxxxx> Link: https://lore.kernel.org/r/20231114-upstream-net-20231113-mptcp-misc-fixes-6-7-rc2-v1-3-7b9cd6a7b7f4@xxxxxxxxxx Signed-off-by: Jakub Kicinski <kuba@xxxxxxxxxx> Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx> --- net/mptcp/pm_netlink.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) --- a/net/mptcp/pm_netlink.c +++ b/net/mptcp/pm_netlink.c @@ -1538,8 +1538,9 @@ void mptcp_pm_remove_addrs(struct mptcp_ struct mptcp_pm_addr_entry *entry; list_for_each_entry(entry, rm_list, list) { - remove_anno_list_by_saddr(msk, &entry->addr); - if (alist.nr < MPTCP_RM_IDS_MAX) + if ((remove_anno_list_by_saddr(msk, &entry->addr) || + lookup_subflow_by_saddr(&msk->conn_list, &entry->addr)) && + alist.nr < MPTCP_RM_IDS_MAX) alist.ids[alist.nr++] = entry->addr.id; } Patches currently in stable-queue which might be from geliang.tang@xxxxxxxx are queue-6.6/mptcp-add-validity-check-for-sending-rm_addr.patch