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CVE Record

CVE-2022-50109: video: fbdev: amba-clcd: Fix refcount leak bugs

In the Linux kernel, the following vulnerability has been resolved: video: fbdev: amba-clcd: Fix refcount leak bugs In clcdfb_of_init_display(), we should call of_node_put() for the references returned by of_graph_get_next_endpoint() and of_graph_get_remote_port_parent() which have increased the refcount. Besides, we should call of_node_put() both in fail path or when the references are not used anymore.

UnknownCVSS not scoredNot KEV-listedUpdated
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Glexia's TakeAutomated analysisunknown

Security readout for executives and security teams

Plain-English summary

CVE-2022-50109 is a Linux kernel bug in the AMBA CLCD framebuffer display driver. The published description says some device-tree node references were not released correctly, causing reference-count leaks. Business impact is unclear because no CVSS score, CWE, or exploitation evidence is provided.

Executive priority

Track and remediate through normal kernel patch management unless your environment uses AMBA CLCD framebuffer systems. Escalate only if vendor guidance identifies higher impact or exposed operational assets.

Technical view

The issue is in clcdfb_of_init_display() under video/fbdev/amba-clcd. References returned by of_graph_get_next_endpoint() and of_graph_get_remote_port_parent() increment refcounts and should be released with of_node_put() on success and failure paths.

Likely exposure

Exposure appears limited to Linux systems using affected kernel versions with the AMBA CLCD framebuffer driver and relevant device-tree display configuration. General Linux fleets may not be exposed if this driver is absent, disabled, or unused.

Exploitation context

The source bundle does not report active exploitation, public exploit use, KEV listing, CVSS, or a concrete impact scenario. Treat exploitability and operational impact as unconfirmed from the available evidence.

Researcher notes

Evidence identifies a reference-count leak fix, not a described privilege escalation or remote attack. The record lacks CVSS, CWE, and impact detail, so analysis should stay bounded to the driver and affected Linux versions listed.

Mitigation direction

  • Check distro or kernel vendor advisories for backported fixes.
  • Update affected kernels to releases containing the referenced stable commits.
  • Prioritize systems using AMBA CLCD framebuffer hardware or configuration.
  • Document exceptions where the driver is absent, disabled, or unused.

Validation and detection

  • Inventory kernel versions against the affected version list.
  • Confirm whether the amba-clcd framebuffer driver is built, loaded, or configured.
  • Review vendor package changelogs for the referenced stable fixes.
  • Check device-tree usage for AMBA CLCD display endpoints.
Prepared
Confidence
medium
Sources
10

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-2022-50109 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
9Source 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
LinuxLinuxd10715be03bd8bad59ddc50236cb140c3bd73c7b, d10715be03bd8bad59ddc50236cb140c3bd73c7b, d10715be03bd8bad59ddc50236cb140c3bd73c7b, d10715be03bd8bad59ddc50236cb140c3bd73c7b, d10715be03bd8bad59ddc50236cb140c3bd73c7b, d10715be03bd8bad59ddc50236cb140c3bd73c7b, d10715be03bd8bad59ddc50236cb140c3bd73c7b, d10715be03bd8bad59ddc50236cb140c3bd73c7bunaffected
LinuxLinux3.17, 0, 4.14.291, 4.19.256, 5.4.211, 5.10.137, 5.15.61, 5.18.18, 5.19.2, 6.0affected
Weakness

CWE details

No CWE listed

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