HIGH

CVE-2026-64562

2026-08-04 CVSS v3.1

CVSS

8.8

Description

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

KVM: nVMX: Hide shadow VMCS right after VMCLEAR

free_nested() frees the shadow VMCS while vmcs01 still points to it. But
because it is asynchronous with respect to loaded_vmcs_clear(), the vCPU
might migrate before the pointer is cleared and __loaded_vmcs_clear()
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.

EPSS Score

0.13%

Probability of exploitation in next 30 days

2.5th percentile

References

https://git.kernel.org/stable/c/1dabef6e206568bf9d9ade74f6e56a48ea35695d https://git.kernel.org/stable/c/4f50e6aec16f69627dbad5704d1e90a255d766a7 https://git.kernel.org/stable/c/589419470030a89f16cf19300658b6dc644ca946 https://git.kernel.org/stable/c/622ebfac01ba4f9c0060cebd41257fe46fc4a0b3 https://git.kernel.org/stable/c/8001d2ce9d9bd09118ce523aef595aa094573ae3 https://git.kernel.org/stable/c/af56298e9d86e6098cd1d2e155cb2949b7c45412 https://git.kernel.org/stable/c/b82c3144d8264265448292ca406f60bafeba3b6f https://git.kernel.org/stable/c/dc3eecfa219ebc9d01eaf7d1abd1441efe884dab

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Base CVE data derived from NVD (public domain). Enrichment by dbcve.org (CC-BY-4.0). Fetched via API.

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