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.
Affected products
linux: linux kernel
References8
- git.kernel.org/stable/c/1dabef6e206568bf9d9ade74f6e56a48ea35695d Patch
- git.kernel.org/stable/c/4f50e6aec16f69627dbad5704d1e90a255d766a7 Patch
- git.kernel.org/stable/c/589419470030a89f16cf19300658b6dc644ca946 Patch
- git.kernel.org/stable/c/622ebfac01ba4f9c0060cebd41257fe46fc4a0b3 Patch
- git.kernel.org/stable/c/8001d2ce9d9bd09118ce523aef595aa094573ae3 Patch
- git.kernel.org/stable/c/af56298e9d86e6098cd1d2e155cb2949b7c45412 Patch
- git.kernel.org/stable/c/b82c3144d8264265448292ca406f60bafeba3b6f Patch
- git.kernel.org/stable/c/dc3eecfa219ebc9d01eaf7d1abd1441efe884dab Patch
Metrics
- CVSS 3.1
-
8.8
HIGH
Score source: CNA
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H - EPSS — exploit probability
- 0% percentile: 5 · as of 13 November 2026
- CWE
- CWE-416
Could this be exploited in your environment?
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