KVM: nSVM: Raise #UD if unhandled VMMCALL isn't intercepted by L1
CVE-2026-46076 is a vulnerability related to the KVM nSVM implementation where an unhandled VMMCALL instruction that is not intercepted by the L1 hypervisor causes a #UD (undefined instruction) exception. The provided description does not include detailed technical or impact information. No CVSS score or known exploits are reported. The affected products include Microsoft and Azure Linux 3. 0 versions. No patch or remediation information is available in the provided data.
AI Analysis
Technical Summary
This vulnerability involves the KVM nSVM feature in Microsoft and Azure Linux 3.0 where an unhandled VMMCALL instruction, if not intercepted by the L1 hypervisor, triggers a #UD exception. The exact security impact or exploitation details are not provided. There is no CVSS score or detailed technical analysis available from the source data.
Potential Impact
The impact of this vulnerability is not explicitly described in the available information. There are no known exploits in the wild, and no details on potential consequences such as privilege escalation, denial of service, or information disclosure are provided.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. No official fix or mitigation details are provided in the available data.
KVM: nSVM: Raise #UD if unhandled VMMCALL isn't intercepted by L1
Description
CVE-2026-46076 is a vulnerability related to the KVM nSVM implementation where an unhandled VMMCALL instruction that is not intercepted by the L1 hypervisor causes a #UD (undefined instruction) exception. The provided description does not include detailed technical or impact information. No CVSS score or known exploits are reported. The affected products include Microsoft and Azure Linux 3. 0 versions. No patch or remediation information is available in the provided data.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability involves the KVM nSVM feature in Microsoft and Azure Linux 3.0 where an unhandled VMMCALL instruction, if not intercepted by the L1 hypervisor, triggers a #UD exception. The exact security impact or exploitation details are not provided. There is no CVSS score or detailed technical analysis available from the source data.
Potential Impact
The impact of this vulnerability is not explicitly described in the available information. There are no known exploits in the wild, and no details on potential consequences such as privilege escalation, denial of service, or information disclosure are provided.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. No official fix or mitigation details are 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-2026-46076
- Cve Count
- 1
- Additional Cves
- []
- Cvss Version
- null
Threat ID: 6a18ab75e29bf47b50288c70
Added to database: 5/28/2026, 8:54:13 PM
Last enriched: 5/28/2026, 9:01:26 PM
Last updated: 5/29/2026, 10:49:55 AM
Views: 6
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