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CVE Record

CVE-2022-48859: net: marvell: prestera: Add missing of_node_put() in prestera_switch_set_base_mac_addr

In the Linux kernel, the following vulnerability has been resolved: net: marvell: prestera: Add missing of_node_put() in prestera_switch_set_base_mac_addr This node pointer is returned by of_find_compatible_node() with refcount incremented. Calling of_node_put() to aovid the 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 concerns a Linux kernel bug in the Marvell Prestera network driver where a device-tree node reference was not released. The source describes a reference-count leak, not remote code execution or privilege escalation. Business urgency is mainly for environments running affected Linux kernels with this driver or related hardware.

Executive priority

Treat as a targeted kernel maintenance issue, not an emergency, unless your environment relies on Marvell Prestera networking on affected kernels. Because severity and exploitability are not established, prioritize accurate asset identification and routine patch alignment.

Technical view

prestera_switch_set_base_mac_addr() used of_find_compatible_node(), which increments a node reference count, but missed the corresponding of_node_put(). The Linux fix adds the missing release to avoid a refcount leak. The source bundle names affected Linux versions and stable kernel commits, but provides no CVSS, CWE, or deeper impact analysis.

Likely exposure

Exposure appears limited to Linux systems running affected kernel versions with the Marvell Prestera driver path present. The bundle lists Linux 5.10, 5.15.29, 5.16.15, and 5.17 as affected, with linked stable fixes. Distribution backports may change exact exposure.

Exploitation context

CISA KEV is false, and the provided sources do not claim active exploitation. The available description only supports a kernel refcount leak in a driver path. No public exploit status, attack prerequisites, or practical impact are established in the source bundle.

Researcher notes

The public record is sparse: no CVSS, CWE, exploit evidence, or detailed impact beyond a missing of_node_put() reference release. Further analysis should focus on driver reachability, whether repeated invocation can create operational impact, and whether downstream kernels backported the fix.

Mitigation direction

  • Upgrade to a Linux kernel or distribution build containing the linked stable fixes.
  • Prioritize systems using Marvell Prestera networking hardware or driver support.
  • Check vendor or Linux distribution advisories for backported fixed kernel packages.
  • Track this as lower urgency unless affected hardware and kernels are confirmed.

Validation and detection

  • Inventory Linux kernel versions across network appliances, servers, and embedded systems.
  • Identify systems with Marvell Prestera driver support or related hardware enabled.
  • Confirm whether installed kernels include the referenced stable commits or distro backports.
  • Document unaffected systems where the driver or hardware is absent.
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-2022-48859 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
4Source 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
LinuxLinux501ef3066c89d7f9045315e1be58749cf9e6814d, 501ef3066c89d7f9045315e1be58749cf9e6814d, 501ef3066c89d7f9045315e1be58749cf9e6814dunaffected
LinuxLinux5.10, 0, 5.15.29, 5.16.15, 5.17affected
Weakness

CWE details

No CWE listed

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