CVE-2022-2196

MEDIUM5.8

Speculative execution attacks in KVM VMX

Published Jan 9, 2023

Modified 1 years ago

Details

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

References

WEB

https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=2e7eab81425ad6c875f2ed47c0ce01e78afc38a5

WEB

https://kernel.dance/#2e7eab81425a

WEB

https://lists.debian.org/debian-lts-announce/2023/05/msg00005.html

WEB

https://security.netapp.com/advisory/ntap-20230223-0002/

ADVISORY

https://www.cve.org/CVERecord?id=CVE-2022-2196

CVSS Analysis