CVEvulnerability
CVE-2026-64562
8.8 HIGH
Official page ↗
- Status
- Received
- Published
- 2026-08-04
- Last modified
- 2026-10-19
- Assigner
- 416baaa9-dc9f-4396-8d5f-8c081fb06d67
- CVSS 3.1 (416baaa9-dc9f-4396-8d5f-8c081fb06d67)
- 8.8 HIGH — CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
- Weaknesses
- CWE-416
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.
Related
Weakness · CWE (1)
- CWE-416 Use After Free weakness
References
- https://git.kernel.org/stable/c/1dabef6e206568bf9d9ade74f6e56a48ea35695d git.kernel.org
- https://git.kernel.org/stable/c/4f50e6aec16f69627dbad5704d1e90a255d766a7 git.kernel.org
- https://git.kernel.org/stable/c/589419470030a89f16cf19300658b6dc644ca946 git.kernel.org
- https://git.kernel.org/stable/c/622ebfac01ba4f9c0060cebd41257fe46fc4a0b3 git.kernel.org
- https://git.kernel.org/stable/c/8001d2ce9d9bd09118ce523aef595aa094573ae3 git.kernel.org
- https://git.kernel.org/stable/c/af56298e9d86e6098cd1d2e155cb2949b7c45412 git.kernel.org
- https://git.kernel.org/stable/c/b82c3144d8264265448292ca406f60bafeba3b6f git.kernel.org
- https://git.kernel.org/stable/c/dc3eecfa219ebc9d01eaf7d1abd1441efe884dab git.kernel.org