CVE-2022-2196

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 past commit 2e7eab81425a

Affected Software

VendorProductVersion RangeStatus
LinuxLinux Kernel0 < 2e7eab81425aaffected
LinuxLinux Kernel0 < 6.2affected

Weaknesses

  • CWE-1188: CWE-1188 Insecure Default Initialization of Resource

ADP Enrichment

CVE Program Container

Additional References

CISA ADP Vulnrichment

  • SSVC:
  • Exploitation: none
    • Automatable: no
    • Technical Impact: total

References