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| author | Paolo Abeni <pabeni@redhat.com> | 2021-05-25 14:23:10 -0700 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2021-05-25 15:56:20 -0700 |
| commit | 20b5759f21cf53a0e03031bd3fe539e332b13568 (patch) | |
| tree | 1e4608d2155e141f7edfd383e65e9e4462f087f8 /net/netlink | |
| parent | bab09fe2f65200a67209a360988bc24f3de4b95d (diff) | |
mptcp: avoid OOB access in setsockopt()
We can't use tcp_set_congestion_control() on an mptcp socket, as
such function can end-up accessing a tcp-specific field -
prior_ssthresh - causing an OOB access.
To allow propagating the correct ca algo on subflow, cache the ca
name at initialization time.
Additionally avoid overriding the user-selected CA (if any) at
clone time.
Closes: https://github.com/multipath-tcp/mptcp_net-next/issues/182
Fixes: aa1fbd94e5c7 ("mptcp: sockopt: add TCP_CONGESTION and TCP_INFO")
Acked-by: Florian Westphal <fw@strlen.de>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Signed-off-by: Mat Martineau <mathew.j.martineau@linux.intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/netlink')
0 files changed, 0 insertions, 0 deletions