Answer in brief
CVE-2026-68081 records a Unknown severity vulnerability in KVM: nVMX: Put vmcs12 pages if nested VM-Enter fails due to invalid guest state. The current sources do not mark it as known exploited. The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
A CVSS score is not reported in the current record. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| Linux/Linuxgeneric | >=96c66e87deeeb3cc78a3b82a1de8e365eec206c1 <7996013b85687034d2e820cef94d6404192e3a3d || >=96c66e87deeeb3cc78a3b82a1de8e365eec206c1 <2c87a087c20632d68920272173b5d7c47f9bcf70 || >=96c66e87deeeb3cc78a3b82a1de8e365eec206c1 <2f2312c422fd2695da772cecb30c69994b795964 | 7996013b85687034d2e820cef94d6404192e3a3d, 2c87a087c20632d68920272173b5d7c47f9bcf70, 2f2312c422fd2695da772cecb30c69994b795964 |
| Linux/Linuxgeneric | 5.2 | Not reported |
Published upstream
Aug 8, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Aug 8, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Aug 8, 2026
In the Linux kernel, the following vulnerability has been resolved: KVM: nVMX: Put vmcs12 pages if nested VM-Enter fails due to invalid guest state Put all vmcs12 pages if KVM synthesizes a nested VM-Exit due to invalid guest while emulating VMLAUNCH or VMRESUME. The invalid guest state path doesn't use nested_vmx_vmexit() as that API is intended to be used if and only if L2 is active, and the open coded equivalent neglects to put the vmcs12 pages. Failure to put the vmcs12 pages leaks any pinned pages (and/or mappings) if L1 retries VMLAUNCH/VMRESUME. Note, the !from_vmenter scenario doesn't suffer the same problem, as vmx_get_nested_state_pages() only gets/pins/maps the vmcs12 pages if L2 is active, i.e. if a "full" VM-Exit is guaranteed before KVM will retry getting vmcs12 pages.
Quoted source text, attributed separately from HOL analysis.
Answer in brief
CVE-2026-68081 records a Unknown severity vulnerability in KVM: nVMX: Put vmcs12 pages if nested VM-Enter fails due to invalid guest state. The current sources do not mark it as known exploited. The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
A CVSS score is not reported in the current record. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| Linux/Linuxgeneric | >=96c66e87deeeb3cc78a3b82a1de8e365eec206c1 <7996013b85687034d2e820cef94d6404192e3a3d || >=96c66e87deeeb3cc78a3b82a1de8e365eec206c1 <2c87a087c20632d68920272173b5d7c47f9bcf70 || >=96c66e87deeeb3cc78a3b82a1de8e365eec206c1 <2f2312c422fd2695da772cecb30c69994b795964 | 7996013b85687034d2e820cef94d6404192e3a3d, 2c87a087c20632d68920272173b5d7c47f9bcf70, 2f2312c422fd2695da772cecb30c69994b795964 |
| Linux/Linuxgeneric | 5.2 | Not reported |
Published upstream
Aug 8, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Aug 8, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Aug 8, 2026
In the Linux kernel, the following vulnerability has been resolved: KVM: nVMX: Put vmcs12 pages if nested VM-Enter fails due to invalid guest state Put all vmcs12 pages if KVM synthesizes a nested VM-Exit due to invalid guest while emulating VMLAUNCH or VMRESUME. The invalid guest state path doesn't use nested_vmx_vmexit() as that API is intended to be used if and only if L2 is active, and the open coded equivalent neglects to put the vmcs12 pages. Failure to put the vmcs12 pages leaks any pinned pages (and/or mappings) if L1 retries VMLAUNCH/VMRESUME. Note, the !from_vmenter scenario doesn't suffer the same problem, as vmx_get_nested_state_pages() only gets/pins/maps the vmcs12 pages if L2 is active, i.e. if a "full" VM-Exit is guaranteed before KVM will retry getting vmcs12 pages.
Quoted source text, attributed separately from HOL analysis.