KVM: nSVM: Sync interrupt shadow to cached vmcb12 after VMRUN of L2
CVE-2026-45987 is a vulnerability related to KVM nested virtualization involving synchronization of interrupt shadow state to the cached vmcb12 after executing VMRUN of a second-level guest (L2). The vulnerability affects Microsoft products including Azure Linux 3. 0. No detailed technical information or CVSS score is provided. There are no known exploits in the wild and no patch or remediation details are available at this time.
AI Analysis
Technical Summary
This vulnerability concerns the synchronization of the interrupt shadow state to the cached vmcb12 structure after a VMRUN instruction of an L2 guest in a nested virtualization environment using KVM on Microsoft Azure Linux 3.0. The issue may impact the correct operation of nested virtual machines but specific exploitation details and impact are not described in the available data.
Potential Impact
The impact is not explicitly described in the provided information. Without further technical details or vendor advisory, the exact consequences of this synchronization issue remain unclear. No known exploits have been reported.
Mitigation Recommendations
Patch status is not yet confirmed — check the Microsoft Security Response Center advisory for current remediation guidance. No official fix or workaround information is currently available.
KVM: nSVM: Sync interrupt shadow to cached vmcb12 after VMRUN of L2
Description
CVE-2026-45987 is a vulnerability related to KVM nested virtualization involving synchronization of interrupt shadow state to the cached vmcb12 after executing VMRUN of a second-level guest (L2). The vulnerability affects Microsoft products including Azure Linux 3. 0. No detailed technical information or CVSS score is provided. There are no known exploits in the wild and no patch or remediation details are available at this time.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability concerns the synchronization of the interrupt shadow state to the cached vmcb12 structure after a VMRUN instruction of an L2 guest in a nested virtualization environment using KVM on Microsoft Azure Linux 3.0. The issue may impact the correct operation of nested virtual machines but specific exploitation details and impact are not described in the available data.
Potential Impact
The impact is not explicitly described in the provided information. Without further technical details or vendor advisory, the exact consequences of this synchronization issue remain unclear. No known exploits have been reported.
Mitigation Recommendations
Patch status is not yet confirmed — check the Microsoft Security Response Center advisory for current remediation guidance. No official fix or workaround information is currently available.
Technical Details
- Gcve Source
- db.gcve.eu
- Csaf Category
- csaf_vex
- Csaf Version
- 2.0
- Publisher
- Microsoft Security Response Center
- Advisory Id
- msrc_CVE-2026-45987
- Cve Count
- 1
- Additional Cves
- []
- Cvss Version
- null
Threat ID: 6a18ab7be29bf47b50288d87
Added to database: 5/28/2026, 8:54:19 PM
Last enriched: 5/28/2026, 9:03:55 PM
Last updated: 5/28/2026, 10:12:08 PM
Views: 2
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