Bug 2395293 (CVE-2022-50311)

Summary: CVE-2022-50311 kernel: cxl: Fix refcount leak in cxl_calc_capp_routing
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security DevOps Team <prodsec-dev>
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OS: Linux   
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Description OSIDB Bzimport 2025-09-15 15:05:51 UTC 
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.
Comment 1 Jon Moroney 2025-09-15 23:41:24 UTC 
Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2025091500-CVE-2022-50311-0c21@gregkh/T