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CVE Record

CVE-2022-50760: drm/amdgpu: Fix PCI device refcount leak in amdgpu_atrm_get_bios()

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.

UnknownCVSS not scoredNot KEV-listedUpdated
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Glexia's TakeAutomated analysisunknown

Security readout for executives and security teams

Plain-English summary

CVE-2022-50760 is a Linux kernel AMDGPU driver issue where a PCI device reference is not released in one BIOS-reading path. The public record describes a refcount leak, not data theft or remote takeover. Business urgency depends on whether Linux systems use the AMDGPU driver and affected kernel branches.

Executive priority

Treat as routine kernel hygiene unless your fleet heavily uses AMDGPU on affected kernels. No source indicates active exploitation or severe impact, but kernel resource leaks can affect reliability. Patch through normal Linux update cycles, prioritizing exposed AMDGPU systems.

Technical view

The bug is in drm/amdgpu amdgpu_atrm_get_bios(). pci_get_class() increments the returned pci_dev reference count and may decrement the prior input. When the loop exits with pdev non-NULL, the code missed pci_dev_put(), causing a PCI device refcount leak. Stable kernel commits add the missing release.

Likely exposure

Exposure is likely limited to Linux systems running affected kernel versions with the AMDGPU driver path present. The source lists affected Linux versions from 4.2 through 6.2 and several stable branch fix points. Distribution backports may change version-based conclusions.

Exploitation context

The provided sources do not report active exploitation, public exploit code, or KEV listing. The described impact is a reference-count leak in kernel driver code. Practical exploitability and security impact are not quantified in the supplied CVE data.

Researcher notes

Evidence is limited to the CVE description and kernel stable references. No CVSS, CWE, exploit status, or distro-specific package mapping is provided. Avoid assuming impact beyond the documented PCI device refcount leak without additional vendor analysis.

Mitigation direction

  • Apply Linux kernel updates containing the referenced stable fixes.
  • Check your Linux distribution’s advisory for backported AMDGPU fixes.
  • Prioritize systems using AMD GPUs or loading the amdgpu driver.
  • If patch timing is uncertain, follow vendor guidance for operational mitigations.

Validation and detection

  • Inventory Linux kernel versions across servers, workstations, and images.
  • Identify systems with AMD GPUs or the amdgpu driver enabled.
  • Compare installed kernels against vendor advisories and stable fix commits.
  • Confirm updated kernels are deployed and active after reboot.
Prepared
Confidence
medium
Sources
11

Public sources used

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.

Potential ATT&CK relevance

Conservative CVE-to-ATT&CK context

These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.

ATT&CK lookup starting points

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CVE-2022-50760 mapping review

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Vulnerability profileCVE Program record
Severity
Unknown
CVSS
Not scored
Known Exploited
No
Published
Official CVE source material

CNA and ADP enrichment extracted from CVE v5

These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.

0CVSS vectors
0Timeline events
0ADP providers
10Source links

CVSS and timeline data

No CVSS vectors or timeline events were available in the normalized CVE source material.

Source materials

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus
LinuxLinuxd38ceaf99ed015f2a0b9af3499791bd3a3daae21, d38ceaf99ed015f2a0b9af3499791bd3a3daae21, d38ceaf99ed015f2a0b9af3499791bd3a3daae21, d38ceaf99ed015f2a0b9af3499791bd3a3daae21, d38ceaf99ed015f2a0b9af3499791bd3a3daae21, d38ceaf99ed015f2a0b9af3499791bd3a3daae21, d38ceaf99ed015f2a0b9af3499791bd3a3daae21, d38ceaf99ed015f2a0b9af3499791bd3a3daae21, d38ceaf99ed015f2a0b9af3499791bd3a3daae21unaffected
LinuxLinux4.2, 0, 4.9.337, 4.14.303, 4.19.270, 5.4.229, 5.10.163, 5.15.86, 6.0.16, 6.1.2, 6.2affected
Weakness

CWE details

No CWE listed

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