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.

No CVSS v4.0

No CVSS v3.1

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

The EPSS score is 0.00157.

Key SSVC decision points have not yet been added.

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions
Linux Linux unaffected
Version Status Constraints
355f4fb1405ec29d0fac49b4d41fcd78cbd455d5 affected < af56298e9d86e6098cd1d2e155cb2949b7c45412
355f4fb1405ec29d0fac49b4d41fcd78cbd455d5 affected < 589419470030a89f16cf19300658b6dc644ca946
355f4fb1405ec29d0fac49b4d41fcd78cbd455d5 affected < 8001d2ce9d9bd09118ce523aef595aa094573ae3
355f4fb1405ec29d0fac49b4d41fcd78cbd455d5 affected < 1dabef6e206568bf9d9ade74f6e56a48ea35695d
355f4fb1405ec29d0fac49b4d41fcd78cbd455d5 affected < 622ebfac01ba4f9c0060cebd41257fe46fc4a0b3
Linux Linux affected
Version Status Constraints
4.9 affected —
0 unaffected < 4.9
6.6.148 unaffected ≤ 6.6.*
6.12.101 unaffected ≤ 6.12.*
6.18.42 unaffected ≤ 6.18.*
7.1.6 unaffected ≤ 7.1.*
7.2-rc5 unaffected ≤ *

No data.

No data.

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Advisories

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Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

References
Link Providers
https://git.kernel.org/stable/c/1dabef6e206568bf9d9ade74f6e56a48ea35695d cve-icon
https://git.kernel.org/stable/c/589419470030a89f16cf19300658b6dc644ca946 cve-icon
https://git.kernel.org/stable/c/622ebfac01ba4f9c0060cebd41257fe46fc4a0b3 cve-icon
https://git.kernel.org/stable/c/8001d2ce9d9bd09118ce523aef595aa094573ae3 cve-icon
https://git.kernel.org/stable/c/af56298e9d86e6098cd1d2e155cb2949b7c45412 cve-icon
History

Tue, 04 Aug 2026 09:30:00 +0000

Type Values Removed Values Added
Weaknesses CWE-416
CWE-469

Tue, 04 Aug 2026 06:30:00 +0000

Type Values Removed Values Added
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.
Title KVM: nVMX: Hide shadow VMCS right after VMCLEAR
First Time appeared Linux
Linux linux Kernel
CPEs cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
Vendors & Products Linux
Linux linux Kernel
References

Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: Linux

Published:

Updated: 2026-08-04T06:23:21.855Z

Reserved: 2026-07-19T15:36:31.796Z

Link: CVE-2026-64562

cve-icon Vulnrichment

No data.

cve-icon NVD

No data.

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-08-04T09:15:03Z

Weaknesses