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CVE Record

CVE-2023-53993: PCI/DOE: Fix memory leak with CONFIG_DEBUG_OBJECTS=y

In the Linux kernel, the following vulnerability has been resolved: PCI/DOE: Fix memory leak with CONFIG_DEBUG_OBJECTS=y After a pci_doe_task completes, its work_struct needs to be destroyed to avoid a memory leak with CONFIG_DEBUG_OBJECTS=y.

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 issue where completed PCI DOE work items may leak memory when the kernel is built with CONFIG_DEBUG_OBJECTS enabled. The public bundle does not describe remote compromise, privilege escalation, or data exposure. Business impact appears mainly stability-related, but severity is not scored.

Executive priority

Handle through routine Linux kernel patch management unless local evidence shows debug kernels or affected PCI/DOE workloads are broadly deployed. Escalate if production systems run custom debug kernels or vendor guidance assigns higher severity.

Technical view

The resolved defect is in PCI/DOE task cleanup: after a pci_doe_task completes, its work_struct must be destroyed to avoid a memory leak under CONFIG_DEBUG_OBJECTS=y. The bundle lists Linux kernel affected metadata and three stable kernel commits, but provides no CVSS, CWE, or exploit detail.

Likely exposure

Exposure is most likely on Linux systems running affected kernel builds with PCI/DOE code paths and CONFIG_DEBUG_OBJECTS enabled. Standard production kernels may not enable that debug configuration, but this must be verified per distribution and build.

Exploitation context

The source bundle does not report active exploitation, and KEV is false. It also does not provide attacker prerequisites, trigger conditions, or public exploit references. Treat exploitability as unproven from the supplied evidence.

Researcher notes

Key gaps are severity, exact affected range semantics, exploitability, and whether the leak is triggerable by unprivileged users. Analysis should focus on kernel config, PCI/DOE reachability, and whether downstream vendors backported the work_struct destruction fix.

Mitigation direction

  • Review vendor or distribution advisories for the affected kernel package.
  • Prioritize applying kernel updates containing the referenced stable fixes.
  • Identify kernels built with CONFIG_DEBUG_OBJECTS=y.
  • Assess whether PCI/DOE-capable hardware or code paths are present.
  • Plan normal reboot or live-patching workflow after kernel update.

Validation and detection

  • Record running kernel versions across Linux assets.
  • Check kernel build configuration for CONFIG_DEBUG_OBJECTS.
  • Map installed packages to vendor-fixed kernel releases.
  • Confirm the referenced stable commits are included in source builds.
  • Monitor systems for unusual kernel memory growth if updates are delayed.
Prepared
Confidence
medium
Sources
5

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

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ATT&CK lookup starting points

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CVE-2023-53993 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
4Source 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
LinuxLinux9d24322e887b6a3d3f9f9c3e76937a646102c8c1, 9d24322e887b6a3d3f9f9c3e76937a646102c8c1, 9d24322e887b6a3d3f9f9c3e76937a646102c8c1unaffected
LinuxLinux6.0, 0, 6.1.24, 6.2.11, 6.3affected
Weakness

CWE details

No CWE listed

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