CVE-2026-46131: Linux Kernel

Medium severity, CVSS 5.5. EPSS: 0.1% chance of exploitation in the next 30 days.

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.

Affected products

• Linux Linux Kernel: from 6.2, before 6.6.140 (fixed in 6.6.140); from 6.7, before 6.12.88 (fixed in 6.12.88); from 6.13, before 6.18.30 (fixed in 6.18.30); from 6.19, before 7.0.7 (fixed in 7.0.7); version 7.1 only

Published 2026-05-28. Last modified 2026-06-24.