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

cxl: Fix refcount leak in cxl_calc_capp_routing

of_get_next_parent() returns a node pointer with refcount incremented,
we should use of_node_put() on it when not need anymore.
This function only calls of_node_put() in normal path,
missing it in the error path.
Add missing of_node_put() to avoid refcount leak.

References

• https://nvd.nist.gov/vuln/detail/CVE-2022-50311
• https://git.kernel.org/stable/c/1d09697ff22908ae487fc8c4fbde1811732be523
• https://git.kernel.org/stable/c/2d7b6580384e6d65419933ddc525bd176095da54
• https://git.kernel.org/stable/c/651e8bc9d0418c20a1989b7c078c64c2a6346fa3
• https://git.kernel.org/stable/c/6a310e8db5409676b4b3e6c1f54dff174e4fd04d
• https://git.kernel.org/stable/c/81c8bbf5b2b5f0c8030fff1716c00849cda8571a
• https://git.kernel.org/stable/c/c9bebc503881c1391f6c4f820134884adecf1519
• https://git.kernel.org/stable/c/ee870f72465015327ad96204b0e92450d04870cd
• https://git.kernel.org/stable/c/f2d60f6ba173cded65081cee690b67802395a479