CVE-2022-50760
Unknown Unknown - Not Provided
Reference Count Leak in Linux amdgpu PCI Device Handling

Publication date: 2025-12-24

Last updated on: 2025-12-24

Assigner: kernel.org

Description
In the Linux kernel, the following vulnerability has been resolved: drm/amdgpu: Fix PCI device refcount leak in amdgpu_atrm_get_bios() As comment of pci_get_class() says, it returns a pci_device with its refcount increased and decreased the refcount for the input parameter @from if it is not NULL. If we break the loop in amdgpu_atrm_get_bios() with 'pdev' not NULL, we need to call pci_dev_put() to decrease the refcount. Add the missing pci_dev_put() to avoid refcount leak.
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Meta Information
Published
2025-12-24
Last Modified
2025-12-24
Generated
2026-06-16
AI Q&A
2025-12-24
EPSS Evaluated
2026-06-14
NVD
CVE-2022-50760
EUVD
EUVD-2022-55801
Affected Vendors & Products
Showing 1 associated CPE
Vendor Product Version / Range
linux linux_kernel *
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Exploitability
CWE
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KEV
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CWE ID Description
CWE-UNKNOWN
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Executive Summary

This vulnerability is a reference count leak in the Linux kernel's amdgpu driver, specifically in the function amdgpu_atrm_get_bios(). The issue occurs because the function fails to call pci_dev_put() to decrease the reference count of a PCI device when breaking a loop with a non-NULL device pointer, leading to a refcount leak.

Impact Analysis

The reference count leak can lead to resource management issues in the kernel, potentially causing memory leaks or instability in the system due to unreleased PCI device references.

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