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CVE Record

CVE-2024-38632: vfio/pci: fix potential memory leak in vfio_intx_enable()

In the Linux kernel, the following vulnerability has been resolved: vfio/pci: fix potential memory leak in vfio_intx_enable() If vfio_irq_ctx_alloc() failed will lead to 'name' memory leak.

UnknownCVSS not scoredNot KEV-listedUpdated
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Glexia's TakeAutomated analysisunknown

Security readout for executives and security teams

Plain-English summary

CVE-2024-38632 is a Linux kernel VFIO PCI bug where memory allocated for an interrupt name may not be freed if a later allocation fails. The public record describes a memory leak, not code execution or data theft. Business urgency is mainly for hosts using VFIO, PCI passthrough, or virtualization workloads.

Executive priority

Schedule remediation through normal kernel patch cycles, with higher priority for virtualization infrastructure. There is no source-backed evidence of active exploitation, but kernel memory leaks can affect host reliability and should not be left untracked.

Technical view

The issue is in vfio_intx_enable() in the Linux kernel vfio/pci path. If vfio_irq_ctx_alloc() fails, the allocated name buffer can leak. Kernel stable commits are cited as fixes, and Debian LTS published downstream guidance. No CVSS, CWE, or detailed impact scoring is provided in the source bundle.

Likely exposure

Exposure is most relevant on Linux systems using VFIO PCI functionality, commonly virtualization or PCI passthrough hosts. The source bundle lists Linux kernel versions and stable commits, but asset owners must map their distro kernel packages to vendor-fixed builds.

Exploitation context

The source bundle does not show CISA KEV listing, public exploitation, exploit code, or a confirmed attack path. Treat this as a kernel maintenance and hardening issue unless vendor guidance identifies higher operational impact for your environment.

Researcher notes

Evidence is limited to the CVE description, Linux stable references, and a Debian LTS advisory link. The bug appears to be a failure-path memory leak in vfio_intx_enable(), not a broadly described privilege escalation. No exploitability details are provided.

Mitigation direction

  • Apply Linux kernel updates from your distribution or kernel vendor.
  • Prioritize virtualization hosts using VFIO or PCI passthrough.
  • Review the cited stable kernel commits for fixed branches.
  • Check Debian LTS guidance if running affected Debian LTS kernels.
  • Avoid inventing workarounds; follow vendor-specific kernel guidance.

Validation and detection

  • Inventory Linux kernel versions across virtualization and passthrough hosts.
  • Check whether VFIO PCI modules or workloads are in use.
  • Map installed distro kernels to vendor advisories or fixed stable commits.
  • Confirm patched kernel packages are installed and running after reboot.
  • Document systems deferred from patching and their compensating controls.
Prepared
Confidence
medium
Sources
8

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-2024-38632 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
2ADP providers
7Source links

SSVC decision data

CISA-ADPCISA Coordinator
Timestamp
Version
2.0.3
Exploitation: noneAutomatable: noTechnical Impact: partial

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.

ADP provider summaries

CVECVE Program Container
CISA-ADPCISA ADP Vulnrichment
other:ssvc

Source materials

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus
LinuxLinux4cb0d7532126d23145329826c38054b4e9a05e7c, 7d29d4c72c1e196cce6969c98072a272d1a703b3, 69276a555c740acfbff13fb5769ee9c92e1c828e, 18c198c96a815c962adc2b9b77909eec0be7df4d, 18c198c96a815c962adc2b9b77909eec0be7df4d, b18fa894d615c8527e15d96b76c7448800e13899, 27d40bf72dd9a6600b76ad05859176ea9a1b4897, 4c089cefe30924fbe20dd1ee92774ea1f5eca834, 0e09cf81959d9f12b75ad5c6dd53d237432ed034unaffected
LinuxLinux6.9, 0, 5.15.168, 6.1.113, 6.6.33, 6.9.4, 6.10affected
Weakness

CWE details

No CWE listed

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