platform/x86: think-lmi: Free system certificate signatures (CVE-2026-81018) | HOL Guard CVE

Unknown severity · Source severity not reportedCVE-2026-81018

platform/x86: think-lmi: Free system certificate signatures

Answer in brief

CVE-2026-81018 records a Unknown severity vulnerability in platform/x86: think-lmi: Free system certificate signatures. The current sources do not mark it as known exploited. The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Sep 11, 2026Updated Sep 11, 2026Source checked Sep 11, 2026First seen by HOL Sep 11, 2026Material review Sep 11, 2026

Upstream Advisory

Key facts

Risk: Unknown severitySource severity not reported
Exploitation: Not marked as known exploited
Affected software: 2 mapped packages or products
Fix availability: Available

Why this deserves its current priority

A CVSS score is not reported in the current record. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
Package	Affected range	Fixed version
Linux/Linuxgeneric	>=5dcb5ef125907d09806509a9db8c6705041e0026 <9c28adde051fe76a7754856d0a414ab89adcaa4d \|\| >=5dcb5ef125907d09806509a9db8c6705041e0026 <abbcc0354108cf47a6055b951182bf73520d0363 \|\| >=5dcb5ef125907d09806509a9db8c6705041e0026 <abca989604f60fe29d7170431f819e28ec7d868a	9c28adde051fe76a7754856d0a414ab89adcaa4d, abbcc0354108cf47a6055b951182bf73520d0363, abca989604f60fe29d7170431f819e28ec7d868a
Linux/Linuxgeneric	6.13	Not reported

Recommended response

Check inventory. Check lockfiles and deployed manifests for Linux/Linux, Linux/Linux.
Review the reported fix. Update Linux/Linux to 9c28adde051fe76a7754856d0a414ab89adcaa4d if you use the affected versions. Test the change in a non-production environment first.

Evidence timeline and material changes

Published upstream
Sep 11, 2026
Evidence: source:cvelist:source_dates:source-dates:record
Source modified
Sep 11, 2026
Evidence: source:cvelist:source_dates:source-dates:record
First seen by HOL
Sep 11, 2026

Sources and claim methodology

Upstream source description

In the Linux kernel, the following vulnerability has been resolved: platform/x86: think-lmi: Free system certificate signatures Multi-certificate support also allows the system authentication object to store ->signature and ->save_signature, which leak when the driver is removed. Free the signatures to avoid leaking memory.

Quoted source text, attributed separately from HOL analysis.