In the Linux kernel, the following vulnerability has been resolved:

soc: bcm: brcmstb: pm: pm-arm: Fix refcount leak in brcmstb_pm_probe

of_find_matching_node() returns a node pointer with refcount
incremented, we should use of_node_put() on it when not need anymore.
Add missing of_node_put() to avoid refcount leak.

In brcmstb_init_sram, it pass dn to of_address_to_resource(),
of_address_to_resource() will call of_find_device_by_node() to take
reference, so we should release the reference returned by
of_find_matching_node().

https://git.kernel.org/stable/c/10ba9d499a9fd82ed40897e734ba19870a879407

https://git.kernel.org/stable/c/30bbfeb480ae8b5ee43199d72417b232590440c2

https://git.kernel.org/stable/c/37d838de369b07b596c19ff3662bf0293fdb09ee

https://git.kernel.org/stable/c/4f5877bdf7b593e988f1924f4c3df6523f80b39c

https://git.kernel.org/stable/c/734a4d15142bb4c8ecad2d8ec70d7564e78ae34d

https://git.kernel.org/stable/c/dcafd5463d8f20c4f90ddc138a5738adb99f74c8