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CVE Record

CVE-2022-50758: staging: vt6655: fix potential memory leak

In the Linux kernel, the following vulnerability has been resolved: staging: vt6655: fix potential memory leak In function device_init_td0_ring, memory is allocated for member td_info of priv->apTD0Rings[i], with i increasing from 0. In case of allocation failure, the memory is freed in reversed order, with i decreasing to 0. However, the case i=0 is left out and thus memory is leaked. Modify the memory freeing loop to include the case i=0.

UnknownCVSS not scoredNot KEV-listedUpdated
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Glexia's TakeAutomated analysisunknown

Security readout for executives and security teams

Plain-English summary

CVE-2022-50758 is a Linux kernel memory leak in the staging vt6655 driver. If allocation fails during transmit-ring initialization, one allocated object may not be freed. The public record does not provide CVSS, exploitation evidence, or business impact beyond potential resource leakage.

Executive priority

Treat as a routine kernel maintenance item unless vt6655 is used in sensitive or resource-constrained systems. There is no sourced evidence of active exploitation or severe impact, but unpatched kernel defects should be cleared through normal update cycles.

Technical view

The issue is in device_init_td0_ring for the vt6655 staging driver. Error-handling frees td_info allocations in reverse order but omits index 0, leaving memory allocated on failure. Kernel stable commits adjust the cleanup loop to include i=0.

Likely exposure

Exposure appears limited to Linux systems running affected kernels with the vt6655 staging driver present or usable. The provided affected-version data is not enough to map confidently to every distribution kernel.

Exploitation context

No active exploitation is supported by the provided sources, and the CVE is not marked KEV. The record describes a memory leak during an allocation-failure path, not remote code execution or privilege escalation.

Researcher notes

The source data lacks CVSS, CWE, exploitability analysis, and clear version-range semantics. Focus validation on code presence, driver reachability, and whether downstream kernels backported one of the stable commits.

Mitigation direction

  • Check Linux distribution advisories for CVE-2022-50758 coverage and fixed kernel packages.
  • Prioritize kernel updates that include the referenced upstream stable fixes.
  • If vt6655 is unnecessary, consider disabling or excluding that driver per vendor guidance.
  • Track exceptions where older or custom kernels include the affected code.

Validation and detection

  • Inventory Linux kernel versions across servers, endpoints, appliances, and embedded systems.
  • Determine whether vt6655 staging driver code is present in deployed kernels.
  • Confirm vendor kernel changelogs include the referenced stable commits or CVE fix.
  • Review vulnerability scanner findings against actual distribution backport status.
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-2022-50758 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
0Timeline events
0ADP providers
8Source links

CVSS and timeline data

No CVSS vectors or timeline events were available in the normalized CVE source material.

Source materials

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus
LinuxLinux5341ee0adb17d12a96dc5344e0d267cd12b52135, 5341ee0adb17d12a96dc5344e0d267cd12b52135, 5341ee0adb17d12a96dc5344e0d267cd12b52135, 5341ee0adb17d12a96dc5344e0d267cd12b52135, 5341ee0adb17d12a96dc5344e0d267cd12b52135, 5341ee0adb17d12a96dc5344e0d267cd12b52135, 5341ee0adb17d12a96dc5344e0d267cd12b52135unaffected
LinuxLinux4.18, 0, 4.19.262, 5.4.220, 5.10.150, 5.15.75, 5.19.17, 6.0.3, 6.1affected
Weakness

CWE details

No CWE listed

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