Insecure Default Initialization of Resource Affecting kernel-rt-debug-kvm package, versions <0:4.18.0-477.10.1.rt7.274.el8_8
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Test your applications- Snyk ID SNYK-CENTOS8-KERNELRTDEBUGKVM-3228163
- published 11 Jan 2023
- disclosed 28 Sep 2022
Introduced: 28 Sep 2022
CVE-2022-2196 Open this link in a new tabHow to fix?
Upgrade Centos:8 kernel-rt-debug-kvm to version 0:4.18.0-477.10.1.rt7.274.el8_8 or higher.
NVD Description
Note: Versions mentioned in the description apply only to the upstream kernel-rt-debug-kvm package and not the kernel-rt-debug-kvm package as distributed by Centos.
See How to fix? for Centos:8 relevant fixed versions and status.
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
- https://access.redhat.com/security/cve/CVE-2022-2196
- https://security.netapp.com/advisory/ntap-20230223-0002/
- https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=2e7eab81425ad6c875f2ed47c0ce01e78afc38a5
- https://kernel.dance/#2e7eab81425a
- https://lists.debian.org/debian-lts-announce/2023/05/msg00005.html