CVE-2022-50337
Unknown Unknown - Not Provided
BaseFortify

Publication date: 2025-09-15

Last updated on: 2025-12-04

Assigner: kernel.org

Description
In the Linux kernel, the following vulnerability has been resolved: ocxl: fix pci device refcount leak when calling get_function_0() get_function_0() calls pci_get_domain_bus_and_slot(), as comment says, it returns a pci device with refcount increment, so after using it, pci_dev_put() needs be called. Get the device reference when get_function_0() is not called, so pci_dev_put() can be called in the error path and callers unconditionally. And add comment above get_dvsec_vendor0() to tell callers to call pci_dev_put().
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Meta Information
Published
2025-09-15
Last Modified
2025-12-04
Generated
2026-06-16
AI Q&A
2025-09-15
EPSS Evaluated
2026-06-14
NVD
CVE-2022-50337
Affected Vendors & Products
Showing 4 associated CPEs
Vendor Product Version / Range
linux linux_kernel From 5.9 (inc) to 5.10.163 (exc)
linux linux_kernel From 5.11 (inc) to 5.15.86 (exc)
linux linux_kernel From 5.16 (inc) to 6.0.16 (exc)
linux linux_kernel From 6.1 (inc) to 6.1.2 (exc)
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Executive Summary

This vulnerability is a reference count leak in the Linux kernel's ocxl driver related to the function get_function_0(). The function calls pci_get_domain_bus_and_slot(), which increments the reference count of a PCI device, but the corresponding pci_dev_put() to decrement the reference count was not always called, leading to a leak. The fix ensures that pci_dev_put() is called properly in error paths and unconditionally by callers to prevent the leak.

Impact Analysis

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

Mitigation Strategies

To mitigate this vulnerability, update the Linux kernel to a version where the ocxl pci device refcount leak issue has been fixed. This involves applying the patch that ensures pci_dev_put() is called appropriately after get_function_0() usage to prevent reference count leaks.

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