CVE-2026-46131

MEDIUM

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

Title source: cna
STIX 2.1

Description

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.

References (5)

Core 5

Scores

CVSS v3 5.5
EPSS 0.0013
EPSS Percentile 2.8%
Attack Vector LOCAL
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Details

Status published
Products (19)
linux/Kernel 6.13.0 - 6.18.30linux
linux/Kernel 6.19.0 - 7.0.7linux
linux/Kernel 6.2.0 - 6.6.140linux
linux/Kernel 6.7.0 - 6.12.88linux
Linux/Linux < 6.2
Linux/Linux 6.12.88 - 6.12.*
Linux/Linux 6.18.30 - 6.18.*
Linux/Linux 6.2
Linux/Linux 6.6.140 - 6.6.*
Linux/Linux 7.0.7 - 7.0.*
... and 9 more
Published May 28, 2026
Tracked Since May 28, 2026