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CVE Record

CVE-2023-53830: platform/x86: think-lmi: Fix memory leak when showing current settings

In the Linux kernel, the following vulnerability has been resolved: platform/x86: think-lmi: Fix memory leak when showing current settings When retriving a item string with tlmi_setting(), the result has to be freed using kfree(). In current_value_show() however, malformed item strings are not freed, causing a memory leak. Fix this by eliminating the early return responsible for this.

UnknownCVSS not scoredNot KEV-listedUpdated
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Glexia's TakeAutomated analysisunknown

Security readout for executives and security teams

Plain-English summary

CVE-2023-53830 is a Linux kernel memory leak in the think-lmi platform/x86 code path for showing current settings. The bug occurs when malformed item strings are handled without freeing allocated memory. No CVSS score, CWE, or active exploitation evidence is provided.

Executive priority

Schedule remediation through standard kernel maintenance unless internal exposure analysis shows broad use of think-lmi on sensitive systems. Current public evidence supports caution, not emergency response.

Technical view

The issue is in current_value_show(): tlmi_setting() returns an item string that must be released with kfree(). The vulnerable path returned early for malformed item strings, leaking memory. The referenced stable kernel commits remove that early-return leak condition.

Likely exposure

Exposure appears limited to Linux systems using the affected kernel versions and the platform/x86 think-lmi functionality. The bundle lists Linux as affected and references stable kernel fixes, but does not provide deployment prerequisites or attack surface details.

Exploitation context

The source bundle does not report exploitation in the wild, and KEV is false. It also does not describe attacker requirements, privilege level, remote reachability, or practical exploitability. Treat exploitation context as incomplete.

Researcher notes

Evidence is narrow: a memory-management fix, affected Linux version data, and stable commit references. There is no CVSS, CWE, exploit report, or detailed attack model in the bundle, so severity and exploitability remain uncertain.

Mitigation direction

  • Review vendor kernel advisories for fixed packages containing the referenced stable commits.
  • Update affected Linux kernels through normal distribution or vendor channels.
  • Prioritize systems where think-lmi functionality is present or enabled.
  • Monitor kernel vendor notes for corrected affected-version ranges and severity.

Validation and detection

  • Inventory Linux kernel versions across managed systems.
  • Compare results with the affected versions and referenced stable commits in the CVE bundle.
  • Check whether platform/x86 think-lmi functionality is present on relevant systems.
  • Confirm deployed kernel packages include the referenced memory-leak fix.
Prepared
Confidence
medium
Sources
6

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.

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CVE-2023-53830 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
5Source 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
LinuxLinux0fdf10e5fc964c315cf131a2eaab9cc531a9f40f, 0fdf10e5fc964c315cf131a2eaab9cc531a9f40f, 0fdf10e5fc964c315cf131a2eaab9cc531a9f40f, 0fdf10e5fc964c315cf131a2eaab9cc531a9f40funaffected
LinuxLinux5.14, 0, 5.15.107, 6.1.24, 6.2.11, 6.3affected
Weakness

CWE details

No CWE listed

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