CVE-2022-48973: Linux Kernel

Medium severity, CVSS 5.5. EPSS: 0.2% chance of exploitation in the next 30 days.

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

Affected products

• Linux Linux Kernel: from 3.6, before 4.9.336 (fixed in 4.9.336); from 4.10, before 4.14.302 (fixed in 4.14.302); from 4.15, before 4.19.269 (fixed in 4.19.269); from 4.20, before 5.4.227 (fixed in 5.4.227); from 5.5, before 5.10.159 (fixed in 5.10.159); from 5.11, before 5.15.83 (fixed in 5.15.83); …

Published 2024-10-21. Last modified 2026-06-17.