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KVM: SVM: Add missing save/restore handling of LBR MSRs

0
Medium
Published: Sat May 02 2026 (05/02/2026, 00:00:00 UTC)
Source: GCVE Database
Vendor/Project: Microsoft Security Response Center
Product: Microsoft

Description

CVE-2026-46014 is a vulnerability related to KVM's SVM implementation where there is missing save and restore handling of LBR MSRs. The information provided is minimal and does not include technical details beyond this. No known exploits are reported in the wild. There is no CVSS score or patch information available at this time.

AI-Powered Analysis

Machine-generated threat intelligence

AILast updated: 05/28/2026, 21:05:32 UTC

Technical Analysis

This vulnerability concerns the KVM (Kernel-based Virtual Machine) SVM (Secure Virtual Machine) feature, specifically the omission of proper save and restore operations for LBR (Last Branch Record) Model-Specific Registers (MSRs). This could potentially affect the virtualization environment's stability or security, but no further technical details or impact scenarios are provided.

Potential Impact

The impact is not explicitly described in the available data. Without detailed technical or exploit information, the precise consequences of this missing save/restore handling cannot be determined from the current information. No known exploits in the wild have been reported.

Mitigation Recommendations

Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. No official fix or workaround information is provided in the available data.

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Technical Details

Gcve Source
db.gcve.eu
Csaf Category
csaf_vex
Csaf Version
2.0
Publisher
Microsoft Security Response Center
Advisory Id
msrc_CVE-2026-46014
Cve Count
1
Additional Cves
[]
Cvss Version
null

Threat ID: 6a18ab7fe29bf47b50288e39

Added to database: 5/28/2026, 8:54:23 PM

Last enriched: 5/28/2026, 9:05:32 PM

Last updated: 5/29/2026, 7:14:14 AM

Views: 2

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