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mptcp: add validity check for sending RM_ADDR

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commit 8df220b292 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: 8b1c94da1e ("mptcp: only send RM_ADDR in nl_cmd_remove")
Cc: stable@vger.kernel.org
Signed-off-by: Geliang Tang <geliang.tang@suse.com>
Reviewed-by: Mat Martineau <martineau@kernel.org>
Signed-off-by: Matthieu Baerts <matttbe@kernel.org>
Link: https://lore.kernel.org/r/20231114-upstream-net-20231113-mptcp-misc-fixes-6-7-rc2-v1-3-7b9cd6a7b7f4@kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Geliang Tang 2023-11-14 00:16:15 +01:00 committed by Greg Kroah-Hartman
parent 57ced2eb77
commit 43fa3b0d7b
1 changed files with 3 additions and 2 deletions
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5
net/mptcp/pm_netlink.c
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@ -1538,8 +1538,9 @@ void mptcp_pm_remove_addrs(struct mptcp_sock *msk, struct list_head *rm_list)
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;
}