CVE-2022-2196

Advisory lineage Upstream: 0 Downstream: 29
Modified
Published: 09 Jan 2023, 10:59
Last modified:13 Feb 2025, 16:28

Vulnerability Summary

Overall Risk (default)
medium
35/100
CVSS Score
8.8 HIGH
v3.1 (nvd)
EPSS Score
0.03% LOW
0% probability 0.00%
KEV
Not listed
Ransomware
No reports
Public exploits
None found
Dark Web
Not detected

Timeline

09 Jan 2023, 10:59
Published
Vulnerability first disclosed
13 Feb 2025, 16:28
Last Modified
Vulnerability information updated

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

CVSS Metrics

  • v3.1•MEDIUM•Score: 5.8CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:L/I:H/A:L
  • v3.1•HIGH•Score: 8.8CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H

EPSS Trends

Current EPSS score: 0.03%• Percentile: 10%

Techniques & Countermeasures

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

    The product initializes or sets a resource with a default that is intended to be changed by the product's installer, administrator, or maintainer, but the default is not secure.

Affected Systems

  • debian•debian_linux

    10.0

  • linux•linux_kernel

    < 2e7eab81425a | < 6.2 | ≥ 5.4.47, < 5.4.233 | ≥ 5.6.19, < 5.7 | ≥ 5.7.3, < 5.10.170 | ≥ 5.11, < 5.15.96 | ≥ 5.16, < 6.1.14

References (4)