CVE-2026-46131

KVM: x86: check for nEPT/nNPT in slow flush hypercalls

published May 28, 2026

CVSS
—
EPSS
0%
Percentile
2.2
In the wild
Unconfirmed
What it is

In the Linux kernel, the following vulnerability has been resolved:

KVM: x86: check for nEPT/nNPT in slow flush hypercalls

Checking is_guest_mode(vcpu) is incorrect, because translate_nested_gpa()

is only valid if an L2 guest is running *with nested EPT/NPT enabled*.

Instead use the same condition as translate_nested_gpa() itself.

The record
Technical detail
CVSS
Not scored
CVSS v4.0
Not supplied
EPSS
0.00127 · 2.2th percentile
Published
2026-05-28T09:35Z
EPSS history
Timeline
  • 28 MAY 09:35Z
    KVM: x86: check for nEPT/nNPT in slow flush hypercalls
    cvelistv5