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CVE Record

CVE-2022-50821: SUNRPC: Don't leak netobj memory when gss_read_proxy_verf() fails

In the Linux kernel, the following vulnerability has been resolved: SUNRPC: Don't leak netobj memory when gss_read_proxy_verf() fails

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 SUNRPC memory leak fixed upstream. If the vulnerable error path is reached, kernel memory may not be freed. The public record does not provide severity, CVSS, exploitability, or impact beyond the leak description.

Executive priority

Handle as a kernel maintenance item with uncertain urgency. Patch through normal Linux update channels, escalating only if your vendor assigns severity or confirms exposure in critical systems.

Technical view

CVE-2022-50821 concerns gss_read_proxy_verf() in Linux SUNRPC. The resolved issue is that netobj memory was leaked when that function failed. The CVE lists Linux kernel versions and multiple stable commit references, but provides no CWE, CVSS vector, exploit preconditions, or demonstrated security outcome.

Likely exposure

Exposure is limited to Linux kernels containing the affected SUNRPC code. Relevance is higher where SUNRPC/GSS functionality is present, but the source bundle does not define reachable configurations or affected distributions.

Exploitation context

The source bundle does not report active exploitation, public exploit availability, or inclusion in CISA KEV. Treat exploitation status as unconfirmed, not known active.

Researcher notes

Evidence is sparse: the CVE text names a memory leak in a failure path and links stable commits. There is no public CVSS, CWE, exploit narrative, or affected configuration detail in the supplied bundle.

Mitigation direction

  • Check vendor kernel advisories for CVE-2022-50821 coverage.
  • Apply distribution kernel updates that include the referenced upstream fixes.
  • Track upstream stable commits if vendor guidance is not yet available.
  • Prioritize review of systems where SUNRPC/GSS functionality is enabled.

Validation and detection

  • Inventory running Linux kernel versions across managed systems.
  • Compare kernel packages against vendor backport notes for this CVE.
  • Check whether SUNRPC/GSS-related kernel functionality is present or enabled.
  • Confirm patch status against the referenced kernel stable commits.
Prepared
Confidence
medium
Sources
9

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-2022-50821 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
8Source 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
LinuxLinux030d794bf49855f5e2a9e8dfbfad34211d1eb08b, 030d794bf49855f5e2a9e8dfbfad34211d1eb08b, 030d794bf49855f5e2a9e8dfbfad34211d1eb08b, 030d794bf49855f5e2a9e8dfbfad34211d1eb08b, 030d794bf49855f5e2a9e8dfbfad34211d1eb08b, 030d794bf49855f5e2a9e8dfbfad34211d1eb08b, 030d794bf49855f5e2a9e8dfbfad34211d1eb08bunaffected
LinuxLinux3.10, 0, 4.19.270, 5.4.229, 5.10.163, 5.15.87, 6.0.17, 6.1.3, 6.2affected
Weakness

CWE details

No CWE listed

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