CVE-2022-2196

Speculative execution attacks in KVM VMX

En bref

Sévérité
MEDIUM 5.8
EPSS
EPSS 0.35 % · centile 29 (2026-10-28)
État
PUBLISHED
Publiée
Mise à jour
Attribuée par
Google
Statut NVD
Modified

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 applying the relevant stable backports (v5.4.233, v5.10.170, v5.15.96, v6.1.14).

Scores

VersionScoreVecteurÉvalué par
CVSS 3.1MEDIUM 5.8CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:L/I:H/A:LGoogle
CVSS 3.1MEDIUM 5.8CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:L/I:H/A:LNVD · cve-coordination@google.com (Secondary)
CVSS 3.1HIGH 8.8CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:HNVD · nvd@nist.gov (Primary)

Faiblesses (CWE)

Références européennes

Avis du CERT-FR

Configurations affectées (CPE NVD)

Produits affectés

ProduitVersions
Linux · Linux Kernelaffected 64b8f33b2e1e687d465b5cb382e7bec495f1e026 < f93a1a5bdcdd122aae0a3eab7a52c15b71fb725b ; affected e089a83fbc55b8057f332c00f125acaa02b08ef7 < 2e7eab81425ad6c875f2ed47c0ce01e78afc38a5 ; affected 02a3868d18fe639363f1cea6e6d7914513198e43 < 2e7eab81425ad6c875f2ed47c0ce01e78afc38a5 ; affected 5c911beff20aa8639e7a1f28988736c13e03ed54 < 1b0cafaae8884726c597caded50af185ffc13349 ; affected 5c911beff20aa8639e7a1f28988736c13e03ed54 < 6b539a7dbb49250f92515c2ba60aea239efc9e35 ; affected 5c911beff20aa8639e7a1f28988736c13e03ed54 < 63fada296062e91ad9f871970d4e7f19e21a6a15

Références

Sources

SourceLicence
CVE List (CVEProject cvelistV5)CVE Program Terms of Use
EPSS (FIRST.org)FIRST — attribution requested
ENISA EUVDENISA — reproduction authorised, source acknowledged
CERT-FR (ANSSI)Licence Ouverte / Etalab 2.0
NVD (NIST) via fkie-cad/nvd-json-data-feedsPublic domain — this product uses data from the NVD API but is not endorsed or certified by the NVD