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CVE Record

CVE-2022-50006: NFSv4.2 fix problems with __nfs42_ssc_open

In the Linux kernel, the following vulnerability has been resolved: NFSv4.2 fix problems with __nfs42_ssc_open A destination server while doing a COPY shouldn't accept using the passed in filehandle if its not a regular filehandle. If alloc_file_pseudo() has failed, we need to decrement a reference on the newly created inode, otherwise it leaks.

UnknownCVSS not scoredNot KEV-listedUpdated
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Glexia's TakeAutomated analysisunknown

Security readout for executives and security teams

Plain-English summary

CVE-2022-50006 is a Linux kernel NFSv4.2 issue involving server-side COPY handling and cleanup after an internal file allocation failure. The public record does not provide a CVSS score, CWE, exploitability assessment, or confirmed impact. Treat it as a kernel maintenance exposure, especially for systems using NFSv4.2 features.

Executive priority

Medium operational priority until vendor severity is clarified. Patch during normal kernel maintenance unless the organization has heavy NFSv4.2 use or exposed NFS services, in which case accelerate validation and remediation planning.

Technical view

The issue was resolved in Linux kernel NFSv4.2 code around __nfs42_ssc_open. The fix prevents a destination server during COPY from accepting a passed filehandle when it is not a regular filehandle, and corrects an inode reference leak if alloc_file_pseudo() fails.

Likely exposure

Exposure is most relevant to Linux systems running affected kernel versions with NFSv4.2 functionality in use. The bundle lists Linux as affected but does not provide distribution package names, enabled-by-default status, or precise environmental prerequisites.

Exploitation context

No active exploitation is supported by the supplied sources. The CVE is not listed as KEV in the bundle, and no cited source describes public exploit activity, exploit code, or attacker requirements.

Researcher notes

Evidence is limited to the CVE record and upstream stable kernel references. The record describes correctness and reference-management fixes but does not establish confidentiality, integrity, availability impact, privilege boundary, or remote exploitability.

Mitigation direction

  • Check your Linux distribution advisory for CVE-2022-50006 coverage.
  • Apply kernel updates containing the referenced upstream stable fixes.
  • Prioritize systems providing or relying on NFSv4.2 services.
  • Track vendor backports instead of relying only on upstream version numbers.

Validation and detection

  • Inventory Linux kernel versions on NFS-capable systems.
  • Confirm whether NFSv4.2 is enabled or used in production.
  • Verify installed kernel packages include the vendor fix for CVE-2022-50006.
  • Review change records against the referenced upstream stable commits.
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

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-2022-50006 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
5Source 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
LinuxLinuxec4b0925089826af45e99cdf78a8ac84c1d005f1, ec4b0925089826af45e99cdf78a8ac84c1d005f1, ec4b0925089826af45e99cdf78a8ac84c1d005f1, ec4b0925089826af45e99cdf78a8ac84c1d005f1unaffected
LinuxLinux5.5, 0, 5.10.140, 5.15.64, 5.19.6, 6.0affected
Weakness

CWE details

No CWE listed

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