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CVE-2022-2196

Speculative execution attacks in KVM VMX

Published: 1/9/2023 Last updated: 2/13/2025 Reserved: 6/24/2022

A regression exists in the Linux Kernel within KVM: nVMX that allowed for speculative execution attacks. L2 can carry out Spectre v2 attacks on L1 due to L1 thinking it doesn't need retpolines or IBPB after running L2 due to KVM (L0) advertising eIBRS support to L1. An attacker at L2 with code execution can execute code on an indirect branch on the host machine. We recommend upgrading to Kernel 6.2 or past commit 2e7eab81425a

CNA assigner: Google (14ed7db2-1595-443d-9d34-6215bf890778) Requested by: n/a

Metrics

Version Score Severity Vector String
3.1 5.8 Medium CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:L/I:H/A:L

Opam packages affected (27)

albatross cdrom conf-bpftool conf-libbpf conf-linux-libc-dev core core_unix hvsock mirage-block-unix mm ocaml-probes orun rawlink rawlink-eio rawlink-lwt 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 (1)

Product Vendor Version
Linux Kernel Linux < 97ef07182ac46b069bb5e7d46cb903a764d67898

References (7)