CVEvulnerability

CVE-2022-2196

8.8 HIGH Published 2023-01-09 Modified 2026-08-07 Official page ↗
Status
Modified
Published
2023-01-09
Last modified
2026-08-07
Assigner
[email protected]
CVSS 3.1 ([email protected])
5.8 MEDIUM — CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:L/I:H/A:L
CVSS 3.1 ([email protected])
8.8 HIGH — CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
Weaknesses
CWE-1188

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).

Affected configurations

• linux linux kernel (>= 5.4.47 < 5.4.233) • linux linux kernel (>= 5.6.19 < 5.7) • linux linux kernel (>= 5.7.3 < 5.10.170) • linux linux kernel (>= 5.11 < 5.15.96) • linux linux kernel (>= 5.16 < 6.1.14) • debian debian linux 10.0

Related

Weakness · CWE (1)

  • CWE-1188 Initialization of a Resource with an Insecure Default weakness

References