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CVE-2022-2196

A regression exists in the Linux Kernel within KVM: nVMX that allowed for speculative execution attacks.

Impact

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).

Affected products

VendorProductAffected versions
LinuxLinux Kernel
from 5.4.47 before 5.4.233
from 5.6.19 before 5.7
from 5.7.3 before 5.10.170
from 5.11 before 5.15.96
from 5.16 before 6.1.14
DebianDebian Linux
Version 10.0

Weakness classification

CWE-1188

References