In the Linux kernel, the following vulnerability has been resolved: platform/x86: think-lmi: Free system certificate signatures Multi-certificate… (CVE-2026-81018)
A memory leak vulnerability in the Linux kernel's platform/x86 think-lmi driver has been resolved. The issue involved the system authentication object leaking signature data when the driver was removed due to improper freeing of stored certificate signatures.
AI Analysis
Technical Summary
The vulnerability in the Linux kernel's platform/x86 think-lmi driver involved improper memory management where the system authentication object stored multiple certificate signatures (->signature and ->save_signature) that were not freed upon driver removal, causing a memory leak. The fix involves freeing these signatures to prevent memory leakage.
Potential Impact
The vulnerability causes a memory leak in the kernel when the think-lmi driver is removed, potentially leading to increased memory usage and reduced system stability. There is no indication of code execution or privilege escalation from the provided data.
Mitigation Recommendations
A fix has been applied to the Linux kernel to free the system certificate signatures properly and prevent memory leaks. Users should update to the fixed kernel version once available. No additional mitigation steps are indicated.
In the Linux kernel, the following vulnerability has been resolved: platform/x86: think-lmi: Free system certificate signatures Multi-certificate… (CVE-2026-81018)
Description
A memory leak vulnerability in the Linux kernel's platform/x86 think-lmi driver has been resolved. The issue involved the system authentication object leaking signature data when the driver was removed due to improper freeing of stored certificate signatures.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
The vulnerability in the Linux kernel's platform/x86 think-lmi driver involved improper memory management where the system authentication object stored multiple certificate signatures (->signature and ->save_signature) that were not freed upon driver removal, causing a memory leak. The fix involves freeing these signatures to prevent memory leakage.
Potential Impact
The vulnerability causes a memory leak in the kernel when the think-lmi driver is removed, potentially leading to increased memory usage and reduced system stability. There is no indication of code execution or privilege escalation from the provided data.
Mitigation Recommendations
A fix has been applied to the Linux kernel to free the system certificate signatures properly and prevent memory leaks. Users should update to the fixed kernel version once available. No additional mitigation steps are indicated.
Technical Details
- Gcve Source
- db.gcve.eu
- Osv Id
- GHSA-853p-rq52-958c
- Osv Schema Version
- 1.4.0
- Aliases
- ["CVE-2026-81018"]
Threat ID: 6aa4a02855bf5e2cf5a86b16
Added to database: 09/12/2026, 00:43:20 UTC
Last enriched: 09/12/2026, 01:20:11 UTC
Last updated: 09/12/2026, 01:20:11 UTC
Views: 2
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