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CVE-2026-46131

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

Published: 5/28/2026 Last updated: 6/14/2026 Reserved: 5/13/2026

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.

CNA assigner: Linux (416baaa9-dc9f-4396-8d5f-8c081fb06d67) Requested by: n/a

Opam packages affected (29)

albatross cdrom conf-bpftool conf-libbpf conf-linux-libc-dev core core_unix hvsock mirage-block-unix mm ocaml-probes ortools_solvers orun rawlink rawlink-eio rawlink-lwt restricted shell solo5 solo5-bindings-hvt solo5-bindings-spt solo5-cross-aarch64 solo5-kernel-ukvm tracy-client tuntap uring vhd-format vhd-format-lwt xapi-stdext-unix

Products affected (4)

Product Vendor Version
Linux Linux 10 Version 1803 for 32-bit Systems
Linux Linux 10 Version 1803 for x64-based Systems
Linux Linux Android-9
Linux Linux Adobe Dreamweaver?direct download installer version 19.0 and below, 18.0 and below

References (10)