Bug 2395355 (CVE-2022-50337)

Summary: CVE-2022-50337 kernel: ocxl: fix pci device refcount leak when calling get_function_0()
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security DevOps Team <prodsec-dev>
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Version: unspecifiedKeywords: Security
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OS: Linux   
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Description OSIDB Bzimport 2025-09-15 15:09:16 UTC 
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().
Comment 1 Jon Moroney 2025-09-15 20:20:39 UTC 
Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2025091556-CVE-2022-50337-42aa@gregkh/T