vulnerability
Red Hat: CVE-2022-2196: kernel: KVM: nVMX: missing IBPB when exiting from nested guest can lead to Spectre v2 attacks (Multiple Advisories)
| Severity | CVSS | Published | Added | Modified |
|---|---|---|---|---|
| 4 | (AV:L/AC:M/Au:S/C:C/I:N/A:N) | Jan 9, 2023 | May 15, 2023 | Nov 14, 2025 |
Severity
4
CVSS
(AV:L/AC:M/Au:S/C:C/I:N/A:N)
Published
Jan 9, 2023
Added
May 15, 2023
Modified
Nov 14, 2025
Description
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
Solutions
no-fix-redhat-rpm-packageredhat-upgrade-kernelredhat-upgrade-kernel-rt
NEW
Explore Exposure Command
Confidently identify and prioritize exposures from endpoint to cloud with full attack surface visibility and threat-aware risk context.