CVE-2022-2196 (GCVE-0-2022-2196)

Vulnerability from cvelistv5 – Published: 2023-01-09 10:59 – Updated: 2025-02-13 16:28
VLAI?
Title
Speculative execution attacks in KVM VMX
Summary
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
Severity ?
5.8 (Medium)
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:L/I:H/A:L
CWE
  • CWE-1188 - Insecure Default Initialization of Resource
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Kernel Affected: 0 , < 2e7eab81425a (git)
Affected: 0 , < 6.2 (custom)
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  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
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  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



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