CVE-2022-48973

In the Linux kernel, the following vulnerability has been resolved:<br /> <br /> gpio: amd8111: Fix PCI device reference count leak<br /> <br /> for_each_pci_dev() is implemented by pci_get_device(). The comment of<br /> pci_get_device() says that it will increase the reference count for the<br /> returned pci_dev and also decrease the reference count for the input<br /> pci_dev @from if it is not NULL.<br /> <br /> If we break for_each_pci_dev() loop with pdev not NULL, we need to call<br /> pci_dev_put() to decrease the reference count. Add the missing<br /> pci_dev_put() after the &amp;#39;out&amp;#39; label. Since pci_dev_put() can handle NULL<br /> input parameter, there is no problem for the &amp;#39;Device not found&amp;#39; branch.<br /> For the normal path, add pci_dev_put() in amd_gpio_exit().