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CVE Record

CVE-2022-50183: drm/meson: encoder_cvbs: Fix refcount leak in meson_encoder_cvbs_init

In the Linux kernel, the following vulnerability has been resolved: drm/meson: encoder_cvbs: Fix refcount leak in meson_encoder_cvbs_init of_graph_get_remote_node() returns remote device nodepointer with refcount incremented, we should use of_node_put() on it when done. Add missing of_node_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

This CVE is a Linux kernel resource-management bug in the Meson DRM CVBS encoder initialization path. A device-tree node reference was not released, causing a reference-count leak. The public record does not provide CVSS, CWE, exploit evidence, or impact beyond the leak, so business urgency should be driven by kernel exposure and vendor advisories.

Executive priority

Handle through normal kernel patch management unless vendor guidance raises severity. There is no supplied evidence of active exploitation or high-impact compromise, but kernel resource leaks can affect reliability and should not remain unmanaged on exposed or critical systems.

Technical view

The issue is in drm/meson encoder_cvbs initialization. of_graph_get_remote_node() increments a remote device node reference, but the vulnerable code failed to call of_node_put() when finished. The documented fix adds the missing release to prevent the leak. No source in the bundle describes privilege escalation, code execution, or a trigger path.

Likely exposure

Potential exposure is limited to Linux kernels containing the affected drm/meson CVBS encoder code path. The bundle lists Linux as affected, including versions around 5.17, 5.18.18, 5.19.2, and 6.0, but the version data is incomplete and should be verified against vendor kernel packages.

Exploitation context

The CVE is not listed as KEV in the supplied bundle, and no cited source reports active exploitation. The available evidence describes a refcount leak fix only. Treat exploitability and practical impact as unproven from these sources.

Researcher notes

The strongest evidence is the upstream kernel fix description and stable commit references. The public bundle lacks CVSS, CWE, exploit details, affected configuration specifics, and distribution package mappings. Avoid overstating impact until vendor advisories or kernel analysis establish reachability and consequence.

Mitigation direction

  • Check your Linux distribution or kernel vendor advisory for CVE-2022-50183 status.
  • Update to a kernel build containing the referenced stable fixes when available.
  • Prioritize systems using kernels with the drm/meson CVBS encoder path.
  • Track vendor backports, since fixed package versions may differ from upstream versions.

Validation and detection

  • Inventory deployed Linux kernel versions and vendor package release notes.
  • Confirm whether the kernel source includes the missing of_node_put() fix.
  • Check whether drm/meson CVBS encoder support is built or loaded.
  • Document any exception where vendor guidance marks the kernel unaffected.
Prepared
Confidence
medium
Sources
5

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-2022-50183 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
3Timeline events
0ADP providers
4Source links

Vulnerability timeline

Timeline events are normalized from CVE metadata, CNA source timelines, ADP timelines, and KEV metadata when present.

  1. CVE reservedCVE Program

    The CVE ID was reserved by the assigning CNA.

  2. CVE publishedCVE Program

    The CVE record was published.

  3. CVE updatedCVE Program

    The CVE record metadata indicates this as the latest update time.

Source materials

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus
LinuxLinux318ba02cd8a8bacd20a4fe29edff3c0931d17ded, 318ba02cd8a8bacd20a4fe29edff3c0931d17ded, 318ba02cd8a8bacd20a4fe29edff3c0931d17dedunaffected
LinuxLinux5.17, 0, 5.18.18, 5.19.2, 6.0affected
Weakness

CWE details

No CWE listed

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