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CVE Record

CVE-2023-54215: virtio-vdpa: Fix cpumask memory leak in virtio_vdpa_find_vqs()

In the Linux kernel, the following vulnerability has been resolved: virtio-vdpa: Fix cpumask memory leak in virtio_vdpa_find_vqs() Free the cpumask allocated by create_affinity_masks() before returning from the function.

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 memory leak in the virtio-vdpa code path. The reported fix frees a CPU mask allocation before the function returns. Business impact is uncertain from the provided sources because no CVSS score, CWE, exploitability details, or operational impact are supplied.

Executive priority

Treat this as a targeted kernel hygiene item rather than an emergency based on available evidence. Prioritize environments that run Linux virtualization or vDPA workloads, and fold remediation into normal kernel update cycles unless vendor guidance raises severity.

Technical view

CVE-2023-54215 concerns virtio_vdpa_find_vqs(), where memory allocated by create_affinity_masks() was not freed before return. The Linux stable references identify commits addressing the leak. The source bundle lists Linux kernel versions including 6.4, 6.4.12, and 6.5 as affected entries, but version semantics are incomplete.

Likely exposure

Exposure is most relevant to Linux systems using affected kernel builds with virtio-vdpa functionality present or enabled. The provided bundle does not identify distributions, appliances, cloud services, container images, or CPEs, so asset owners should map kernel versions through their vendor advisories.

Exploitation context

The source bundle does not show active exploitation, and CISA KEV status is false. The cited material describes a memory leak fix, not a public exploit, attack path, privilege requirement, or remote reachability condition.

Researcher notes

Evidence is limited to the CVE record summary and two Linux stable commit references. No CVSS, CWE, exploit status, CPE mapping, or concrete impact statement is provided. Avoid assuming remote exploitability or denial-of-service behavior beyond the stated memory leak.

Mitigation direction

  • Check Linux or distribution vendor advisories for CVE-2023-54215 guidance.
  • Update to a kernel build containing the referenced stable fixes.
  • Prioritize virtualization hosts or systems using virtio-vdpa paths.
  • Track vendor backports, since fixed package versions may differ from upstream versions.

Validation and detection

  • Inventory Linux kernel versions across virtualization hosts and relevant workloads.
  • Check whether virtio-vdpa support is present, loaded, or operationally used.
  • Compare installed kernel packages against vendor advisories for this CVE.
  • Confirm the referenced stable commits or vendor backports are included.
Prepared
Confidence
medium
Sources
4

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-2023-54215 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
3Source 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
LinuxLinux3dad56823b5332ffdbe1867b2d7b50fbacea124a, 3dad56823b5332ffdbe1867b2d7b50fbacea124aunaffected
LinuxLinux6.4, 0, 6.4.12, 6.5affected
Weakness

CWE details

No CWE listed

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