CVE-2022-2196
Assigner: Google
Published: 2023-01-09T10:59:53.099Z
State: PUBLISHED
affected: defaultStatus: unaffected
packageName: KVM
product: Linux Kernel
repo: https://git.kernel.org/
vendor: Linux
versions: lessThan: 2e7eab81425a
status: affected
version: 0
versionType: git
lessThan: 6.2
status: affected
version: 0
versionType: custom
datePublic: 2022-10-18T22:00:00.000Z
descriptions: supportingMedia: base64: no
type: text/html
value: A regression exists in the Linux Kernel within KVM: nVMX that allowed for speculative execution attacks.&nbsp;<span style="background-color: rgb(255, 255, 255);">L2 can carry out Spectre v2 attacks on L1 due to L1 thinking it doesn't need retpolines or IBPB&nbsp;<span style="background-color: rgb(255, 255, 255);">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&nbsp;2e7eab81425a</span></span><br>
value: 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

impacts: capecId: CAPEC-30
descriptions: value: CAPEC-30 Hijacking a Privileged Thread of Execution
metrics: cvssV3_1: attackComplexity: HIGH
attackVector: LOCAL
availabilityImpact: LOW
baseScore: 5.8
baseSeverity: MEDIUM
confidentialityImpact: LOW
integrityImpact: HIGH
privilegesRequired: LOW
scope: UNCHANGED
userInteraction: NONE
vectorString: CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:L/I:H/A:L
version: 3.1
format: CVSS
scenarios: value: GENERAL
problemTypes: descriptions: cweId: CWE-1188
description: CWE-1188 Insecure Default Initialization of Resource
type: CWE
source: discovery: INTERNAL
title: Speculative execution attacks in KVM VMX
x_generator: engine: Vulnogram 0.1.0-dev