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CVE Record

CVE-2022-48783: net: dsa: lantiq_gswip: fix use after free in gswip_remove()

In the Linux kernel, the following vulnerability has been resolved: net: dsa: lantiq_gswip: fix use after free in gswip_remove() of_node_put(priv->ds->slave_mii_bus->dev.of_node) should be done before mdiobus_free(priv->ds->slave_mii_bus).

UnknownCVSS not scoredNot KEV-listedUpdated
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Glexia's TakeAutomated analysisunknown

Security readout for executives and security teams

Plain-English summary

This is a Linux kernel bug in a specific network switch driver. During device removal, the driver could free a bus structure before releasing a related device-tree reference, creating a use-after-free condition. Business urgency is limited by unclear severity and likely narrow hardware exposure, but embedded Linux appliances using Lantiq GSWIP should be checked.

Executive priority

Treat as a targeted embedded Linux hygiene issue, not an enterprise-wide emergency based on current evidence. Prioritize network appliances or custom firmware that include Lantiq GSWIP hardware support.

Technical view

CVE-2022-48783 fixes a use-after-free in net/dsa/lantiq_gswip gswip_remove(). The source states of_node_put(priv->ds->slave_mii_bus->dev.of_node) must occur before mdiobus_free(priv->ds->slave_mii_bus). Public data provides stable kernel fix commits, but no CVSS, CWE, exploit details, or complete affected-range explanation.

Likely exposure

Exposure appears limited to Linux systems using the DSA Lantiq GSWIP switch driver, commonly relevant to specific embedded networking hardware. The supplied data does not identify broader Linux configurations or distributions as affected.

Exploitation context

The bundle does not report active exploitation, and KEV status is false. No public exploitability details are provided. The bug occurs in a driver removal path, so practical exploitation conditions are not established from the supplied sources.

Researcher notes

Evidence is sparse: the record names the faulty order and fix direction, but omits CVSS, CWE, attack vector, and complete affected ranges. Avoid assuming remote reachability or exploitability without driver, hardware, and lifecycle context.

Mitigation direction

  • Check vendor or distribution kernel advisories for CVE-2022-48783 coverage.
  • Update affected kernels to builds containing the referenced stable fixes.
  • Prioritize embedded network devices using the Lantiq GSWIP DSA driver.
  • If patching is unavailable, seek vendor-specific mitigation guidance.

Validation and detection

  • Inventory Linux systems and firmware using the Lantiq GSWIP switch driver.
  • Confirm kernel version or commit includes one of the referenced stable fixes.
  • Review vendor SBOMs or kernel configs for lantiq_gswip support.
  • Track distribution advisories because affected ranges are incomplete in the bundle.
Prepared
Confidence
medium
Sources
6

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

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ATT&CK lookup starting points

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CVE-2022-48783 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
2ADP providers
5Source links

SSVC decision data

CISA-ADPCISA Coordinator
Timestamp
Version
2.0.3
Exploitation: noneAutomatable: noTechnical Impact: partial

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.

ADP provider summaries

CVECVE Program Container
CISA-ADPCISA ADP Vulnrichment
other:ssvc

Source materials

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus
LinuxLinuxe177d2e85ebcd3008c4b2abc293f4118e04eedef, b5652bc50dde7b84e93dfb25479b64b817e377c1, 2443ba2fe396bdde187a2fdfa6a57375643ae93c, 0d120dfb5d67edc5bcd1804e167dba2b30809afdunaffected
LinuxLinux5.10.101, 5.15.24, 5.16.10unaffected
Weakness

CWE details

No CWE listed

CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.