mptcp: fix msk traversal in mptcp_nl_cmd_set_flags()

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The MPTCP endpoint list is under RCU protection, guarded by the
pernet spinlock. mptcp_nl_cmd_set_flags() traverses the list
without acquiring the spin-lock nor under the RCU critical section.

This change addresses the issue performing the lookup and the endpoint
update under the pernet spinlock.

Fixes: 0f9f696a50 ("mptcp: add set_flags command in PM netlink")
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Signed-off-by: Mat Martineau <mathew.j.martineau@linux.intel.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

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Paolo Abeni 2022-01-20 16:35:27 -08:00 • committed by Jakub Kicinski

parent 6f97fde869

commit 8e9eacad7e

1 changed files with 27 additions and 10 deletions

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net/mptcp/pm_netlink.c

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