Bug 2405748 (CVE-2022-50572)

Summary: CVE-2022-50572 kernel: ASoC: audio-graph-card: fix refcount leak of cpu_ep in __graph_for_each_link()
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 2025-10-22 14:04:20 UTC 
In the Linux kernel, the following vulnerability has been resolved:

ASoC: audio-graph-card: fix refcount leak of cpu_ep in __graph_for_each_link()

The of_get_next_child() returns a node with refcount incremented, and
decrements the refcount of prev. So in the error path of the while loop,
of_node_put() needs be called for cpu_ep.
Comment 1 Jon Moroney 2025-10-22 17:10:36 UTC 
Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2025102208-CVE-2022-50572-dbfb@gregkh/T