CVE-2026-64562

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Source
https://cve.org/CVERecord?id=CVE-2026-64562
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-64562.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-64562
Downstream
Published
2026-08-04T06:23:21.855Z
Modified
2026-08-06T03:48:34.423377560Z
Summary
KVM: nVMX: Hide shadow VMCS right after VMCLEAR
Details

In the Linux kernel, the following vulnerability has been resolved:

KVM: nVMX: Hide shadow VMCS right after VMCLEAR

freenested() frees the shadow VMCS while vmcs01 still points to it. But because it is asynchronous with respect to loadedvmcs_clear(), the vCPU might migrate before the pointer is cleared and __loadedvmcsclear() may then execute VMCLEAR.

The VMCS needs to stay attached until its explicit VMCLEAR completes, but then it can be hidden and the page safely freed.

Database specific 
{
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/64xxx/CVE-2026-64562.json",
    "cna_assigner": "Linux"
}
References

Affected packages

Git / git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git

Affected ranges

Type
GIT
Repo
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Events
Introduced
355f4fb1405ec29d0fac49b4d41fcd78cbd455d5
Fixed
af56298e9d86e6098cd1d2e155cb2949b7c45412
Fixed
589419470030a89f16cf19300658b6dc644ca946
Fixed
8001d2ce9d9bd09118ce523aef595aa094573ae3
Fixed
1dabef6e206568bf9d9ade74f6e56a48ea35695d
Fixed
622ebfac01ba4f9c0060cebd41257fe46fc4a0b3

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-64562.json"

Linux / Kernel

Package

Name
Kernel

Affected ranges

Type
ECOSYSTEM
Events
Introduced
4.9.0
Fixed
6.6.148
Type
ECOSYSTEM
Events
Introduced
6.7.0
Fixed
6.12.101
Type
ECOSYSTEM
Events
Introduced
6.13.0
Fixed
6.18.42
Type
ECOSYSTEM
Events
Introduced
6.19.0
Fixed
7.1.6

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-64562.json"