CVE-2026-98360 RDMA/rxe: insert mcg into mcg_tree only after rxe_mcast_add() succeeds

In the Linux kernel, the following vulnerability has been resolved: RDMA/rxe: insert mcg into mcgtree only after rxemcastadd succeeds rxegetmcg publishes a newly allocated multicast group in rxe-mcgtree before programming the backing Ethernet multicast address with rxemcastadd, which runs outside...