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CVE Record

CVE-2022-50105: powerpc/spufs: Fix refcount leak in spufs_init_isolated_loader

In the Linux kernel, the following vulnerability has been resolved: powerpc/spufs: Fix refcount leak in spufs_init_isolated_loader of_find_node_by_path() 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 analysislow

Security readout for executives and security teams

Plain-English summary

CVE-2022-50105 is a Linux kernel bug in the PowerPC spufs area. The published fix adds a missing reference release to prevent a device-tree node refcount leak. The business urgency appears limited unless the organization runs affected PowerPC Linux systems, but patch tracking is still appropriate.

Executive priority

Treat this as routine patch governance, not an emergency, unless critical PowerPC Linux workloads are in scope. No active exploitation is cited, and severity data is incomplete, but affected kernels should still be updated through normal maintenance windows.

Technical view

In spufs_init_isolated_loader, of_find_node_by_path() returns a device node with an incremented reference count. The fix adds of_node_put() when the node is no longer needed. The source bundle provides no CVSS score, CWE, attack vector, or demonstrated security impact beyond the refcount leak.

Likely exposure

Exposure appears limited to Linux deployments using affected PowerPC spufs code. The bundle lists Linux as affected across versions including 2.6.20, 4.14.291, 4.19.256, 5.4.211, 5.10.137, 5.15.61, 5.18.18, 5.19.2, and 6.0.

Exploitation context

The source bundle marks KEV as false and provides no evidence of active exploitation, public exploitation, or weaponized use. The available information describes a kernel reference-count leak fixed by stable commits, not an externally proven attack path.

Researcher notes

Key uncertainty is impact. The public description only states a refcount leak and missing of_node_put() after of_find_node_by_path(). There is no CVSS, CWE, exploitability analysis, or product-specific distribution mapping in the bundle.

Mitigation direction

  • Apply Linux vendor or distribution kernel updates containing the referenced stable fixes.
  • Prioritize affected PowerPC Linux systems where spufs is present or enabled.
  • Check vendor advisories before assuming a specific package version is fixed.
  • Track the referenced kernel stable commits in internal vulnerability records.

Validation and detection

  • Inventory Linux systems running PowerPC kernels.
  • Compare deployed kernel packages against vendor fixed versions or referenced stable commits.
  • Review kernel changelogs for the spufs_init_isolated_loader of_node_put fix.
  • Confirm scanners do not treat non-PowerPC assets as exposed without evidence.
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-2022-50105 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
LinuxLinux0afacde3df4c9980f505d9afd7cb0058389732ca, 0afacde3df4c9980f505d9afd7cb0058389732ca, 0afacde3df4c9980f505d9afd7cb0058389732ca, 0afacde3df4c9980f505d9afd7cb0058389732ca, 0afacde3df4c9980f505d9afd7cb0058389732ca, 0afacde3df4c9980f505d9afd7cb0058389732ca, 0afacde3df4c9980f505d9afd7cb0058389732ca, 0afacde3df4c9980f505d9afd7cb0058389732caunaffected
LinuxLinux2.6.20, 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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