Bug 2373558 (CVE-2022-50109)

Summary: CVE-2022-50109 kernel: video: fbdev: amba-clcd: Fix refcount leak bugs
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security DevOps Team <prodsec-dev>
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Priority: low    
Version: unspecifiedCC: dfreiber, drow, jburrell, vkumar
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OS: Linux   
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Description OSIDB Bzimport 2025-06-18 12:08:14 UTC 
In the Linux kernel, the following vulnerability has been resolved:

video: fbdev: amba-clcd: Fix refcount leak bugs

In clcdfb_of_init_display(), we should call of_node_put() for the
references returned by of_graph_get_next_endpoint() and
of_graph_get_remote_port_parent() which have increased the refcount.

Besides, we should call of_node_put() both in fail path or when
the references are not used anymore.
Comment 1 Avinash Hanwate 2025-06-19 12:39:43 UTC 
Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2025061807-CVE-2022-50109-9f52@gregkh/T