Bug 2425005 (CVE-2022-50718)

Summary: CVE-2022-50718 kernel: Linux kernel: Denial of Service due to PCI device reference count leak
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security DevOps Team <prodsec-dev>
Status: NEW --- QA Contact:
Severity: low Docs Contact:
Priority: low    
Version: unspecifiedKeywords: Security
Target Milestone: ---   
Target Release: ---   
Hardware: All   
OS: Linux   
Whiteboard:
Fixed In Version: Doc Type: ---
Doc Text:
A flaw was found in the Linux kernel. A local low-privileged user could exploit a reference count leak in the `drm/amdgpu` component. This vulnerability, related to how PCI (Peripheral Component Interconnect) devices are managed, could lead to a Denial of Service (DoS) by exhausting system resources.
 Story Points: ---
Clone Of: Environment:
Last Closed: Type: ---
Regression: --- Mount Type: ---
Documentation: --- CRM:
Verified Versions: Category: ---
oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
Embargoed:

Description OSIDB Bzimport 2025-12-24 13:01:17 UTC 
In the Linux kernel, the following vulnerability has been resolved:

drm/amdgpu: fix pci device refcount leak

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 before returning from amdgpu_device_resume|suspend_display_audio(),
pci_dev_put() is called to avoid refcount leak.
Comment 1 Alexander B 2025-12-25 09:31:35 UTC 
Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2025122416-CVE-2022-50718-a890@gregkh/T