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).
References
Configurations
Configuration 1 (hide)
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Configuration 2 (hide)
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History
No history.
Information
Published : 2023-01-09 11:15
Updated : 2026-08-07 19:17
NVD link : CVE-2022-2196
Mitre link : CVE-2022-2196
CVE.ORG link : CVE-2022-2196
JSON object : View
Products Affected
debian
- debian_linux
linux
- linux_kernel
CWE
CWE-1188
Initialization of a Resource with an Insecure Default
