CVE-2022-2196 evidence review

Linux Linux Kernel, linux kernel, debian linux

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).

Open CVE record

Evidence review

This record remains available for product and version identification, but it is not presented as a complete remediation procedure. Confirm the affected range and the supported fix in a direct vendor advisory before changing production systems.

ProductLinux Linux Kernel, linux kernel, debian linux

Affected versions>= 64b8f33b2e1e687d465b5cb382e7bec495f1e026 < f93a1a5bdcdd122aae0a3eab7a52c15b71fb725b, >= e089a83fbc55b8057f332c00f125acaa02b08ef7 < 2e7eab81425ad6c875f2ed47c0ce01e78afc38a5, >= 02a3868d18fe639363f1cea6e6d7914513198e43 < 2e7eab81425ad6c875f2ed47c0ce01e78afc38a5, >= 5c911beff20aa8639e7a1f28988736c13e03ed54 < 1b0cafaae8884726c597caded50af185ffc13349, >= 5c911beff20aa8639e7a1f28988736c13e03ed54 < 6b539a7dbb49250f92515c2ba60aea239efc9e35, >= 5c911beff20aa8639e7a1f28988736c13e03ed54 < 63fada296062e91ad9f871970d4e7f19e21a6a15, >= 5c911beff20aa8639e7a1f28988736c13e03ed54 < 2e7eab81425ad6c875f2ed47c0ce01e78afc38a5, >= 5.4.47 < 5.4.233, >= 5.6.19 < 5.7.0, >= 5.7.3 < 5.8.0, >= 5.8.0 < 5.10.170, >= 5.11.0 < 5.15.96, >= 5.16.0 < 6.1.14, >= 5.6.19 < 5.7, >= 5.7.3 < 5.10.170, >= 5.11 < 5.15.96, >= 5.16 < 6.1.14, 10.0

Fixed versions5.4.233, 5.7, 5.10.170, 5.15.96, 6.1.14

Priority basisReview · CVSS 8.8 · EPSS 0.29%

Identify the product and installed version

Record whether Linux Linux Kernel, linux kernel, debian linux is present, where it is installed, and which interfaces are exposed.

Record the product name, package or appliance identifier, and installed version.
Identify internet-facing, administrative, API, and internal access paths.
Preserve the pre-change configuration and relevant service logs.

Compare the affected range

Use the current record as an identification aid: >= 64b8f33b2e1e687d465b5cb382e7bec495f1e026 < f93a1a5bdcdd122aae0a3eab7a52c15b71fb725b, >= e089a83fbc55b8057f332c00f125acaa02b08ef7 < 2e7eab81425ad6c875f2ed47c0ce01e78afc38a5, >= 02a3868d18fe639363f1cea6e6d7914513198e43 < 2e7eab81425ad6c875f2ed47c0ce01e78afc38a5, >= 5c911beff20aa8639e7a1f28988736c13e03ed54 < 1b0cafaae8884726c597caded50af185ffc13349, >= 5c911beff20aa8639e7a1f28988736c13e03ed54 < 6b539a7dbb49250f92515c2ba60aea239efc9e35, >= 5c911beff20aa8639e7a1f28988736c13e03ed54 < 63fada296062e91ad9f871970d4e7f19e21a6a15, >= 5c911beff20aa8639e7a1f28988736c13e03ed54 < 2e7eab81425ad6c875f2ed47c0ce01e78afc38a5, >= 5.4.47 < 5.4.233, >= 5.6.19 < 5.7.0, >= 5.7.3 < 5.8.0, >= 5.8.0 < 5.10.170, >= 5.11.0 < 5.15.96, >= 5.16.0 < 6.1.14, >= 5.6.19 < 5.7, >= 5.7.3 < 5.10.170, >= 5.11 < 5.15.96, >= 5.16 < 6.1.14, 10.0. Resolve incomplete inventory results before deciding that an asset is unaffected.

Verify the authoritative remediation source

Open the linked source material and locate a direct vendor advisory for this CVE. Confirm the supported fixed release and product-specific update path before making a production change.

Operational boundary

This page does not replace the vendor advisory, support contract, change-management process, or recovery plan. Do not infer that an asset is unaffected from an incomplete inventory query or a missing fixed-version field.