CVE-2022-50576: Linux

EPSS: 0.2% chance of exploitation in the next 30 days.

In the Linux kernel, the following vulnerability has been resolved: serial: pch: Fix PCI device refcount leak in pch_request_dma() As comment of pci_get_slot() says, it returns a pci_device with its refcount increased. The caller must decrement the reference count by calling pci_dev_put(). Since 'dma_dev' is only used to filter the channel in filter(), we can call pci_dev_put() before exiting from pch_request_dma(). Add the missing pci_dev_put() for the normal and error path.

Affected products

• Linux Linux: from 2.6.38, before 4.9.337 (fixed in 4.9.337); from 4.10, before 4.14.303 (fixed in 4.14.303); from 4.15, before 4.19.270 (fixed in 4.19.270); from 4.20, before 5.4.229 (fixed in 5.4.229); from 5.5, before 5.10.163 (fixed in 5.10.163); from 5.11, before 5.15.86 (fixed in 5.15.86); …

Published 2025-10-22. Last modified 2026-06-17.