Speculative execution attacks in KVM VMX

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Summary

CVECVE-2022-2196
StatePUBLISHED
AssignerGoogle
Source PriorityCVE Program / NVD first with legacy fallback
Published2023-01-09 11:15:10 UTC
Updated2026-08-07 19:17:31 UTC
DescriptionA 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).

Risk And Classification

Primary CVSS: v3.1 8.8 HIGH from [email protected]

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H

Problem Types: CWE-1188 | CWE-1188 CWE-1188 Insecure Default Initialization of Resource

VersionSourceTypeScoreSeverityVector
3.1[email protected]Primary8.8HIGHCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
3.1[email protected]Secondary5.8MEDIUMCVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:L/I:H/A:L
3.1CNACVSS5.8MEDIUMCVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:L/I:H/A:L

CVSS v3.1 Breakdown

Attack Vector
Local
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Changed
Confidentiality
High
Integrity
High
Availability
High

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Operating System Linux Linux Kernel All All All All

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Linux Linux Kernel affected 64b8f33b2e1e687d465b5cb382e7bec495f1e026 f93a1a5bdcdd122aae0a3eab7a52c15b71fb725b git Not specified
CNA Linux Linux Kernel affected e089a83fbc55b8057f332c00f125acaa02b08ef7 2e7eab81425ad6c875f2ed47c0ce01e78afc38a5 git Not specified
CNA Linux Linux Kernel affected 02a3868d18fe639363f1cea6e6d7914513198e43 2e7eab81425ad6c875f2ed47c0ce01e78afc38a5 git Not specified
CNA Linux Linux Kernel affected 5c911beff20aa8639e7a1f28988736c13e03ed54 1b0cafaae8884726c597caded50af185ffc13349 git Not specified
CNA Linux Linux Kernel affected 5c911beff20aa8639e7a1f28988736c13e03ed54 6b539a7dbb49250f92515c2ba60aea239efc9e35 git Not specified
CNA Linux Linux Kernel affected 5c911beff20aa8639e7a1f28988736c13e03ed54 63fada296062e91ad9f871970d4e7f19e21a6a15 git Not specified
CNA Linux Linux Kernel affected 5c911beff20aa8639e7a1f28988736c13e03ed54 2e7eab81425ad6c875f2ed47c0ce01e78afc38a5 git Not specified
CNA Linux Linux Kernel affected 5.4.47 5.4.233 semver Not specified
CNA Linux Linux Kernel affected 5.6.19 5.7.0 semver Not specified
CNA Linux Linux Kernel affected 5.7.3 5.8.0 semver Not specified
CNA Linux Linux Kernel affected 5.8.0 5.10.170 semver Not specified
CNA Linux Linux Kernel affected 5.11.0 5.15.96 semver Not specified
CNA Linux Linux Kernel affected 5.16.0 6.1.14 semver Not specified
CNA Linux Linux Kernel unaffected 6.2.0 semver Not specified

References

ReferenceSourceLinkTags
security.netapp.com/advisory/ntap-20230223-0002 af854a3a-2127-422b-91ae-364da2661108 security.netapp.com
git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit [email protected] git.kernel.org
git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit [email protected] git.kernel.org
git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit [email protected] git.kernel.org
[SECURITY] [DLA 3404-1] linux-5.10 security update af854a3a-2127-422b-91ae-364da2661108 lists.debian.org Mailing List, Third Party Advisory
kernel/git/torvalds/linux.git - Linux kernel source tree af854a3a-2127-422b-91ae-364da2661108 git.kernel.org Mailing List, Patch, Vendor Advisory
git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit [email protected] git.kernel.org
???????? af854a3a-2127-422b-91ae-364da2661108 kernel.dance Patch, Third Party Advisory
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

Legacy QID Mappings

  • 160528 Oracle Enterprise Linux Security Update for unbreakable enterprise kernel (ELSA-2023-12226)
  • 160551 Oracle Enterprise Linux Security Update for unbreakable enterprise kernel-container (ELSA-2023-12256)
  • 160554 Oracle Enterprise Linux Security Update for unbreakable enterprise kernel (ELSA-2023-12255)
  • 160583 Oracle Enterprise Linux Security Update for kernel (ELSA-2023-2458)
  • 160692 Oracle Enterprise Linux Security Update for kernel (ELSA-2023-2951)
  • 181765 Debian Security Update for linux-5.10 (DLA 3404-1)
  • 183128 Debian Security Update for linux (CVE-2022-2196)
  • 199251 Ubuntu Security Notification for Linux kernel Vulnerabilities (USN-5970-1)
  • 199254 Ubuntu Security Notification for Linux kernel (OEM) Vulnerabilities (USN-5978-1)
  • 199255 Ubuntu Security Notification for Linux kernel (OEM) Vulnerabilities (USN-5976-1)
  • 199256 Ubuntu Security Notification for Linux kernel (OEM) Vulnerabilities (USN-5977-1)
  • 199258 Ubuntu Security Notification for Linux kernel (HWE) Vulnerabilities (USN-5979-1)
  • 199259 Ubuntu Security Notification for Linux kernel Vulnerabilities (USN-5980-1)
  • 199260 Ubuntu Security Notification for Linux kernel Vulnerabilities (USN-5982-1)
  • 199264 Ubuntu Security Notification for Linux kernel Vulnerabilities (USN-5985-1)
  • 199265 Ubuntu Security Notification for Linux kernel Vulnerabilities (USN-5987-1)
  • 199280 Ubuntu Security Notification for Linux kernel (Intel IoTG) Vulnerabilities (USN-6004-1)
  • 199289 Ubuntu Security Notification for Linux kernel (BlueField) Vulnerabilities (USN-6020-1)
  • 199405 Ubuntu Security Notification for Linux kernel (Xilinx ZynqMP) Vulnerabilities (USN-6151-1)
  • 241417 Red Hat Update for kernel security (RHSA-2023:2458)
  • 241468 Red Hat Update for kernel-rt (RHSA-2023:2148)
  • 241504 Red Hat Update for kernel security (RHSA-2023:2951)
  • 241527 Red Hat Update for kernel-rt (RHSA-2023:2736)
  • 242941 Red Hat Update for kernel (RHSA-2024:0930)
  • 283611 Fedora Security Update for kernel (FEDORA-2023-f4f9182dc8)
  • 283612 Fedora Security Update for kernel (FEDORA-2023-3fd7349f60)
  • 354820 Amazon Linux Security Advisory for kernel : ALAS2KERNEL-5.4-2023-043
  • 354822 Amazon Linux Security Advisory for kernel : ALAS2KERNEL-5.15-2023-015
  • 354837 Amazon Linux Security Advisory for kernel : ALAS2KERNEL-5.10-2023-028
  • 355255 Amazon Linux Security Advisory for kernel : ALAS-2023-127
  • 355287 Amazon Linux Security Advisory for kernel : ALAS-2023-127
  • 355294 Amazon Linux Security Advisory for kernel : ALAS-2023-127
  • 355295 Amazon Linux Security Advisory for kernel : ALAS-2023-127
  • 355300 Amazon Linux Security Advisory for kernel : ALAS-2023-127
  • 355303 Amazon Linux Security Advisory for kernel : ALAS-2023-127
  • 355309 Amazon Linux Security Advisory for kernel : ALAS-2023-127
  • 355312 Amazon Linux Security Advisory for kernel : ALAS2023-2023-127
  • 378468 Alibaba Cloud Linux Security Update for cloud-kernel (ALINUX3-SA-20230042)
  • 378512 Alibaba Cloud Linux Security Update for cloud-kernel (ALINUX3-SA-2023:0042)
  • 6140320 AWS Bottlerocket Security Update for kernel (GHSA-m593-23x6-9vp9)
  • 672914 EulerOS Security Update for kernel (EulerOS-SA-2023-1781)
  • 672951 EulerOS Security Update for kernel (EulerOS-SA-2023-1759)
  • 753981 SUSE Enterprise Linux Security Update for the Linux Kernel (SUSE-SU-2023:2146-1)
  • 753982 SUSE Enterprise Linux Security Update for the Linux Kernel (SUSE-SU-2023:2148-1)
  • 755851 SUSE Enterprise Linux Security Update for the linux kernel (SUSE-SU-2023:2646-1)
  • 905181 Common Base Linux Mariner (CBL-Mariner) Security Update for kernel (12947)
  • 905221 Common Base Linux Mariner (CBL-Mariner) Security Update for kernel (12951)
  • 906557 Common Base Linux Mariner (CBL-Mariner) Security Update for kernel (12947-1)
  • 906600 Common Base Linux Mariner (CBL-Mariner) Security Update for kernel (12947-3)
  • 906653 Common Base Linux Mariner (CBL-Mariner) Security Update for kernel (12951-3)
  • 906774 Common Base Linux Mariner (CBL-Mariner) Security Update for kernel (12947-5)
  • 941023 AlmaLinux Security Update for kernel (ALSA-2023:2458)
  • 941061 AlmaLinux Security Update for kernel-rt (ALSA-2023:2148)
  • 941096 AlmaLinux Security Update for kernel (ALSA-2023:2951)
  • 941114 AlmaLinux Security Update for kernel-rt (ALSA-2023:2736)

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