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CVE Record

CVE-2022-50123: ASoC: mediatek: mt8173: Fix refcount leak in mt8173_rt5650_rt5676_dev_probe

In the Linux kernel, the following vulnerability has been resolved: ASoC: mediatek: mt8173: Fix refcount leak in mt8173_rt5650_rt5676_dev_probe of_parse_phandle() returns a node pointer with refcount incremented, we should use of_node_put() on it when not need anymore. Fix missing of_node_put() in error paths.

UnknownCVSS not scoredNot KEV-listedUpdated
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Glexia's TakeAutomated analysisunknown

Security readout for executives and security teams

Plain-English summary

This Linux kernel issue is a resource-management bug in a MediaTek MT8173 audio driver path. The public record describes a missing reference release during probe error handling. No CVSS score, CWE, or exploitation evidence is provided, so business urgency depends on whether affected Linux kernels and this hardware-specific driver exist in your fleet.

Executive priority

Treat as normal patch-cycle work unless you operate MediaTek MT8173-based devices or appliances. There is insufficient public evidence for emergency action, but affected embedded fleets should confirm vendor fixes because kernel resource leaks can reduce reliability over time.

Technical view

The flaw is a refcount leak in mt8173_rt5650_rt5676_dev_probe. of_parse_phandle() increments a device-tree node reference, but some error paths did not call of_node_put(). Kernel stable commits are listed as fixes. The source data does not describe privilege requirements, crashability, or a security boundary impact.

Likely exposure

Likely limited to Linux systems using affected kernel versions with the MediaTek MT8173 ASoC rt5650/rt5676 machine driver path. The bundle does not identify downstream distributions, appliances, or cloud images. Validate against kernel version, vendor backports, device tree, and enabled driver configuration.

Exploitation context

The source bundle does not report active exploitation, public exploit code, KEV listing, or an attack scenario. The described condition is a refcount leak on probe error paths, not a documented remote or user-triggered exploit chain.

Researcher notes

Evidence is sparse: no CVSS, CWE, exploitability analysis, or downstream advisory details are included. The strongest facts are the Linux kernel fix description and stable commit references. Avoid broad claims beyond the MT8173 ASoC driver and listed Linux kernel source records.

Mitigation direction

  • Check Linux vendor advisories for your exact kernel package and platform.
  • Apply kernel updates that include the listed stable commits when available.
  • Prioritize embedded or appliance fleets using MediaTek MT8173 audio hardware.
  • Track distribution backports instead of relying only on upstream version numbers.
  • Document exceptions where the affected driver is absent or disabled.

Validation and detection

  • Inventory Linux kernel versions across managed assets.
  • Identify systems with MediaTek MT8173 ASoC rt5650/rt5676 driver support enabled.
  • Confirm vendor kernels include one of the listed upstream stable fixes.
  • Review boot and driver-probe logs for relevant MediaTek ASoC driver loading.
  • Record whether exposed systems are vendor-supported and patchable.
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.

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CVE-2022-50123 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
LinuxLinux94319ba10ecabc8f28129566d1f5793e3e7a0a79, 94319ba10ecabc8f28129566d1f5793e3e7a0a79, 94319ba10ecabc8f28129566d1f5793e3e7a0a79, 94319ba10ecabc8f28129566d1f5793e3e7a0a79, 94319ba10ecabc8f28129566d1f5793e3e7a0a79, 94319ba10ecabc8f28129566d1f5793e3e7a0a79, 94319ba10ecabc8f28129566d1f5793e3e7a0a79, 94319ba10ecabc8f28129566d1f5793e3e7a0a79unaffected
LinuxLinux4.2, 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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