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CVE Record

CVE-2022-50294: wifi: libertas: fix memory leak in lbs_init_adapter()

In the Linux kernel, the following vulnerability has been resolved: wifi: libertas: fix memory leak in lbs_init_adapter() When kfifo_alloc() failed in lbs_init_adapter(), cmd buffer is not released. Add free memory to processing error path.

UnknownCVSS not scoredNot KEV-listedUpdated
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Glexia's TakeAutomated analysisunknown

Security readout for executives and security teams

Plain-English summary

CVE-2022-50294 is a Linux kernel memory leak in the libertas Wi-Fi driver. If adapter initialization hits a kfifo allocation failure, a command buffer is not released. The available sources do not provide CVSS, confirmed exploitation, or a quantified business impact.

Executive priority

Track through normal Linux kernel patch management unless your environment depends on libertas Wi-Fi support. Escalate only if vendor guidance later assigns higher severity or identifies practical exploitation.

Technical view

The issue is in lbs_init_adapter() in the Linux kernel wifi libertas driver. The resolved change adds cleanup of the command buffer on the kfifo_alloc() failure path. This is an error-path resource leak, with affected Linux version data and multiple stable commit references provided.

Likely exposure

Exposure appears limited to Linux kernels that include and use the libertas Wi-Fi driver. Systems without this driver built, loaded, or reachable during adapter initialization are less likely to be affected. The source bundle does not identify specific distributions, devices, or deployment contexts.

Exploitation context

CISA KEV is false in the provided bundle, and no cited source states active exploitation. The trigger described is an allocation failure during driver initialization, not a documented remote attack path. Exploitability and operational impact remain unclear from available evidence.

Researcher notes

The evidence supports a specific error-path leak fix, but not attack prerequisites, privilege requirements, CVSS, or exploit status. Validate exposure by kernel branch, vendor backports, and driver configuration rather than version strings alone.

Mitigation direction

  • Update to a vendor-supported kernel containing the referenced stable fixes.
  • Prioritize systems where the libertas Wi-Fi driver is built or loaded.
  • Check Linux distribution advisories for backported fixes and package versions.
  • Remove or disable unused libertas driver support where operationally safe.

Validation and detection

  • Inventory running kernel versions across Linux assets.
  • Check whether the libertas driver is present, built, or loaded.
  • Compare kernel source or vendor changelog against referenced stable commits.
  • Confirm updated kernels boot and wireless functions still work as expected.
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.

ATT&CK lookup starting points

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CVE-2022-50294 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
LinuxLinux7919b89c8276d657976d4d4d6b7cb58ea1aa08c3, 7919b89c8276d657976d4d4d6b7cb58ea1aa08c3, 7919b89c8276d657976d4d4d6b7cb58ea1aa08c3, 7919b89c8276d657976d4d4d6b7cb58ea1aa08c3, 7919b89c8276d657976d4d4d6b7cb58ea1aa08c3, 7919b89c8276d657976d4d4d6b7cb58ea1aa08c3, 7919b89c8276d657976d4d4d6b7cb58ea1aa08c3, 7919b89c8276d657976d4d4d6b7cb58ea1aa08c3unaffected
LinuxLinux2.6.26, 0, 4.14.308, 4.19.276, 5.4.235, 5.10.173, 5.15.99, 6.1.16, 6.2.3, 6.3affected
Weakness

CWE details

No CWE listed

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