CVE-2022-50505
Unknown Unknown - Not Provided
BaseFortify

Publication date: 2025-10-04

Last updated on: 2026-03-25

Assigner: kernel.org

Description
In the Linux kernel, the following vulnerability has been resolved: iommu/amd: Fix pci device refcount leak in ppr_notifier() As comment of pci_get_domain_bus_and_slot() says, it returns a pci device with refcount increment, when finish using it, the caller must decrement the reference count by calling pci_dev_put(). So call it before returning from ppr_notifier() to avoid refcount leak.
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Meta Information
Published
2025-10-04
Last Modified
2026-03-25
Generated
2026-05-07
AI Q&A
2025-10-04
EPSS Evaluated
2026-05-05
NVD
CVE-2022-50505
Affected Vendors & Products
Showing 1 associated CPE
Vendor Product Version / Range
linux linux_kernel From 5.15.160 (inc) to 5.16 (inc)
Helpful Resources
Exploitability
CWE
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KEV
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CWE ID Description
CWE-UNKNOWN
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AI Powered Q&A
Can you explain this vulnerability to me?

This vulnerability is a reference count leak in the Linux kernel's AMD IOMMU code, specifically in the ppr_notifier() function. The function pci_get_domain_bus_and_slot() returns a PCI device with its reference count incremented, and the caller must decrement this count by calling pci_dev_put() when done. The vulnerability occurs because ppr_notifier() fails to call pci_dev_put() before returning, causing a reference count leak.


How can this vulnerability impact me? :

The reference count leak can lead to resource leaks in the kernel, potentially causing increased memory usage or instability over time as PCI device references are not properly released.


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