CVE-2022-50505

In the Linux kernel, the following vulnerability has been resolved:<br /> <br /> iommu/amd: Fix pci device refcount leak in ppr_notifier()<br /> <br /> As comment of pci_get_domain_bus_and_slot() says, it returns<br /> a pci device with refcount increment, when finish using it,<br /> the caller must decrement the reference count by calling<br /> pci_dev_put(). So call it before returning from ppr_notifier()<br /> to avoid refcount leak.