CVE-2026-64562
8.8
Vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
Exploitability: 2.0 / Impact: 6.0
Source: 416baaa9-dc9f-4396-8d5f-8c081fb06d67 (Secondary)
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.
References (8)
Source: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Source: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Source: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Source: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Source: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Source: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Source: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Source: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Timeline
No history available yet.