CVE-2026-64562
Gravedad CVSS v3.1:
ALTA
Tipo:
No Disponible / Otro tipo
Fecha de publicación:
04/08/2026
Última modificación:
08/08/2026
Descripción
*** Pendiente de traducción *** In the Linux kernel, the following vulnerability has been resolved:<br />
<br />
KVM: nVMX: Hide shadow VMCS right after VMCLEAR<br />
<br />
free_nested() frees the shadow VMCS while vmcs01 still points to it. But<br />
because it is asynchronous with respect to loaded_vmcs_clear(), the vCPU<br />
might migrate before the pointer is cleared and __loaded_vmcs_clear()<br />
may then execute VMCLEAR.<br />
<br />
The VMCS needs to stay attached until its explicit VMCLEAR completes, but<br />
then it can be hidden and the page safely freed.
Impacto
Puntuación base 3.x
8.80
Gravedad 3.x
ALTA
Referencias a soluciones, herramientas e información
- https://git.kernel.org/stable/c/1dabef6e206568bf9d9ade74f6e56a48ea35695d
- 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



