Bug 2373668 (CVE-2022-50157)

Summary: CVE-2022-50157 kernel: PCI: microchip: Fix refcount leak in mc_pcie_init_irq_domains()
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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Hardware: All   
OS: Linux   
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Description OSIDB Bzimport 2025-06-18 12:13:01 UTC 
In the Linux kernel, the following vulnerability has been resolved:

PCI: microchip: Fix refcount leak in mc_pcie_init_irq_domains()

of_get_next_child() returns a node pointer with refcount incremented, so we
should use of_node_put() on it when we don't need it anymore.

mc_pcie_init_irq_domains() only calls of_node_put() in the normal path,
missing it in some error paths.  Add missing of_node_put() to avoid
refcount leak.
Comment 1 Avinash Hanwate 2025-06-18 19:08:18 UTC 
Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2025061824-CVE-2022-50157-14c2@gregkh/T