mptcp: strict validation before using mp_opt->hmac
mp_opt->hmac contains uninitialized data unless OPTION_MPTCP_MPJ_ACK was set in mptcp_parse_option(). We must refine the condition before we call subflow_hmac_valid(). Fixes: f296234c ("mptcp: Add handling of incoming MP_JOIN requests") Signed-off-by:Eric Dumazet <edumazet@google.com> Cc: Florian Westphal <fw@strlen.de> Cc: Peter Krystad <peter.krystad@linux.intel.com> Cc: Matthieu Baerts <matttbe@kernel.org> Cc: Mat Martineau <martineau@kernel.org> Cc: Geliang Tang <geliang.tang@linux.dev> Reviewed-by:
Simon Horman <horms@kernel.org> Acked-by:
Paolo Abeni <pabeni@redhat.com> Reviewed-by:
Mat Martineau <martineau@kernel.org> Link: https://lore.kernel.org/r/20240111194917.4044654-3-edumazet@google.com Signed-off-by:
Jakub Kicinski <kuba@kernel.org>
parent
89e23277
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