CVE-2022-2196

Speculative execution attacks in KVM VMX

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

Category

5.8
CVSS
Severity: Medium
CVSS 3.1 •
EPSS 0.03%
Vendor Advisory kernel.org
Affected: Linux Linux Kernel
Published at:
Updated at:

References

Link Tags
https://kernel.dance/#2e7eab81425a third party advisory patch
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=2e7eab81425ad6c875f2ed47c0ce01e78afc38a5 mailing list patch vendor advisory
https://lists.debian.org/debian-lts-announce/2023/05/msg00005.html third party advisory mailing list
https://security.netapp.com/advisory/ntap-20230223-0002/

Frequently Asked Questions

What is the severity of CVE-2022-2196?
CVE-2022-2196 has been scored as a medium severity vulnerability.
How to fix CVE-2022-2196?
To fix CVE-2022-2196, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2022-2196 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2022-2196 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2022-2196?
CVE-2022-2196 affects Linux Linux Kernel.
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