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linux-stable/net/mptcp
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Paolo Abeni 20b5759f21 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: aa1fbd94e5 ("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>
2021-05-25 15:56:20 -07:00
..
crypto.c kunit: mptcp: adhere to KUNIT formatting standard 2021-04-16 17:10:40 -07:00
crypto_test.c mptcp: move crypto test to KUNIT 2020-06-26 16:21:39 -07:00
ctrl.c mptcp: add a new sysctl add_addr_timeout 2020-11-04 17:45:53 -08:00
diag.c mptcp: allow dumping subflow context to userspace 2020-03-29 22:14:48 -07:00
Kconfig kunit: mptcp: adhere to KUNIT formatting standard 2021-04-16 17:10:40 -07:00
Makefile kunit: mptcp: adhere to KUNIT formatting standard 2021-04-16 17:10:40 -07:00
mib.c mptcp: add active MPC mibs 2021-04-02 14:21:50 -07:00
mib.h mptcp: add active MPC mibs 2021-04-02 14:21:50 -07:00
mptcp_diag.c mptcp: add local addr info in mptcp_info 2021-02-15 15:09:14 -08:00
options.c mptcp: add tracepoint in ack_update_msk 2021-04-16 17:10:40 -07:00
pm.c mptcp: rename mptcp_pm_nl_add_addr_send_ack 2021-03-26 15:05:15 -07:00
pm_netlink.c mptcp: move flags and ifindex out of mptcp_addr_info 2021-04-07 14:09:39 -07:00
protocol.c mptcp: avoid OOB access in setsockopt() 2021-05-25 15:56:20 -07:00
protocol.h mptcp: avoid OOB access in setsockopt() 2021-05-25 15:56:20 -07:00
sockopt.c mptcp: avoid OOB access in setsockopt() 2021-05-25 15:56:20 -07:00
subflow.c mptcp: fix splat when closing unaccepted socket 2021-05-07 15:53:40 -07:00
syncookies.c mptcp: fix syncookie build error on UP 2020-08-01 11:52:55 -07:00
token.c kunit: mptcp: adhere to KUNIT formatting standard 2021-04-16 17:10:40 -07:00
token_test.c mptcp: introduce token KUNIT self-tests 2020-06-26 16:21:39 -07:00