Merge branch 'tipc-fix-netlink-gate-and-receive-path-bugs'

Michael Bommarito says:

====================
tipc: fix netlink gate and receive-path bugs

This is v4 of the public TIPC series. The only change from v3 is in
patch 1: TIPC_NL_MEDIA_SET now uses GENL_UNS_ADMIN_PERM like the other
mutators, instead of GENL_ADMIN_PERM, so the whole series uses the
namespace-aware CAP_NET_ADMIN check that matches the legacy TIPC netlink
path. Patches 2 and 3 are unchanged.

Patch 1 gives the TIPCv2 mutating generic-netlink operations the admin
gate the legacy API already has, so a local unprivileged process can no
longer change TIPC state. Patch 2 drops CONN_ACK messages that
acknowledge more outstanding sends than exist, preventing the
snt_unacked underflow. Patch 3 rejects peer bindings with lower > upper,
which would otherwise leak binding-table memory.
====================

Link: https://patch.msgid.link/20260610124003.3831170-1-michael.bommarito@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

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