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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 IBP…

Medium CVSS 5.8
CVECVE-2022-2196
First seen2026-08-08 02:15 UTC
Disclosed2023-01-09 11:15 UTC
Last updated2026-08-08 02:15 UTC
Channel statusauto

Summary

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 applying the relevant stable backports (v5.4.233, v5.10.170, v5.15.96, v6.1.14).

In-depth triage · Auto channel

No in-depth report has been generated yet (DR-003 v2 AI pipeline is under construction).

Affected products

  • :
  • :
Lint boundary warnings (2)

The following non-blocking warnings were raised during the lint phase of this triage (e.g. reference URLs not yet on the allowlist). They do not affect entry usability and are disclosed for transparency (see DR-002).

  • REF_URL_NOT_ALLOWLISTED url not in allowlist: https://kernel.dance/#2e7eab81425a
  • REF_URL_NOT_ALLOWLISTED url not in allowlist: https://kernel.dance/#2e7eab81425a

Sources

  • NVD DATABASE

Original Links

Timeline

  1. nvd_ingest NVD