KVM: SVM: Inject #UD for INVLPGA if EFER.SVME=0
CVE-2026-46082 is a vulnerability related to the KVM SVM virtualization feature where an #UD (Undefined Instruction) exception is injected for the INVLPGA instruction if the EFER. SVME bit is cleared (set to 0). The provided information does not include detailed technical specifics or exploitation data. No CVSS score is available, and there are no known exploits in the wild. The vulnerability affects Microsoft products including Azure Linux 3. 0. No patch or remediation details are provided in the available data.
AI Analysis
Technical Summary
This vulnerability involves the KVM (Kernel-based Virtual Machine) SVM (Secure Virtual Machine) feature in Microsoft products, specifically concerning the handling of the INVLPGA instruction when the EFER.SVME bit is 0. Under these conditions, an #UD exception is injected, which may indicate improper handling of virtualization instructions. The exact impact or exploitation method is not detailed in the provided information. The vulnerability is identified as CVE-2026-46082 and affects Microsoft Azure Linux 3.0 environments.
Potential Impact
The impact details are not explicitly described in the provided data. Since the vulnerability involves injection of an undefined instruction exception in virtualization, it could potentially affect virtual machine stability or security, but no confirmed exploitation or impact scenarios are documented. No known exploits are reported in the wild.
Mitigation Recommendations
Patch status is not yet confirmed — check the Microsoft Security Response Center advisory (msrc_CVE-2026-46082) for current remediation guidance. No official fix or workaround information is provided in the available data.
KVM: SVM: Inject #UD for INVLPGA if EFER.SVME=0
Description
CVE-2026-46082 is a vulnerability related to the KVM SVM virtualization feature where an #UD (Undefined Instruction) exception is injected for the INVLPGA instruction if the EFER. SVME bit is cleared (set to 0). The provided information does not include detailed technical specifics or exploitation data. No CVSS score is available, and there are no known exploits in the wild. The vulnerability affects Microsoft products including Azure Linux 3. 0. No patch or remediation details are provided in the available data.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability involves the KVM (Kernel-based Virtual Machine) SVM (Secure Virtual Machine) feature in Microsoft products, specifically concerning the handling of the INVLPGA instruction when the EFER.SVME bit is 0. Under these conditions, an #UD exception is injected, which may indicate improper handling of virtualization instructions. The exact impact or exploitation method is not detailed in the provided information. The vulnerability is identified as CVE-2026-46082 and affects Microsoft Azure Linux 3.0 environments.
Potential Impact
The impact details are not explicitly described in the provided data. Since the vulnerability involves injection of an undefined instruction exception in virtualization, it could potentially affect virtual machine stability or security, but no confirmed exploitation or impact scenarios are documented. No known exploits are reported in the wild.
Mitigation Recommendations
Patch status is not yet confirmed — check the Microsoft Security Response Center advisory (msrc_CVE-2026-46082) for current remediation guidance. No official fix or workaround information is provided in the available data.
Technical Details
- Gcve Source
- db.gcve.eu
- Csaf Category
- csaf_vex
- Csaf Version
- 2.0
- Publisher
- Microsoft Security Response Center
- Advisory Id
- msrc_CVE-2026-46082
- Cve Count
- 1
- Additional Cves
- []
- Cvss Version
- null
Threat ID: 6a18ab78e29bf47b50288d08
Added to database: 5/28/2026, 8:54:16 PM
Last enriched: 5/28/2026, 9:02:34 PM
Last updated: 5/29/2026, 7:06:15 AM
Views: 2
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